Siemens AG Fuse Systems. Totally Integrated Power SENTRON. Configuration. Edition 10/2014. Manual. siemens.com/lowvoltage

Transcription

1 Siemens AG 015 Totally Integrated Power SENTRON Configuration Manual Edition /01 siemens.com/lowvoltage

2 Siemens AG 015

3 Siemens AG 015 Introduction NEOZED fuse systems 8 NEOZED fuse links 15 DIAZED fuse systems Cylindrical fuse systems Cylindrical fuse links and cylindrical fuse holders 3 Fuse holders in size x 38 mm and Class CC 3 Class CC fuse systems 0 Busbar systems 3NA, 3ND LV HRC fuse systems 5 LV HRC fuse links 8 LV HRC signal detectors 9 LV HRC fuse bases and accessories SITOR semiconductor fuses 78 LV HRC design 135 Cylindrical fuse design 1 NEOZED and DIAZED design 151 Configuration Photovoltaic fuses 15 Introduction 15 PV cylindrical fuses 170 PV cumulative fuses For further technical product information: Service & Support Portal: Product List: Technical specifications Entry List: Certificates / Characteristics / Download / FAQ / Manuals / Updates Siemens /01

4 Siemens AG 015 Introduction Overview Devices Page Application Standards Used in Non-residential buildings Residential buildings Industry NEOZED fuse systems 8 MINIZED switch disconnectors, bases, fuse links from A to 3 A of operational class gg and accessories. Everything you need for a complete system. DIAZED fuse systems 15 Fuse links from A to 0 A in various operational classes, base versions with classic screw base connections. A widely used fuse system. Fuse system: IEC 09-3; DIN VDE 03-3; Safety switching devices IEC/EN DIN VDE 038; EN (VDE 00-7 IEC 09-3; DIN VDE 035; DIN VDE 03-3; CEE 1 Cylindrical fuse systems Cylindrical fuse links and cylindrical fuse holders Line protection or protection of switching devices. The fuse holders with touch protection ensure the safe no-voltage replacement of fuse links. Auxiliary switches can be retrofitted. IEC 09-1, -, -3; NF C 0-00; NF C 3-, -11; NBN C 39-, CEI 3-, -1 Fuse holders: File No. E1717 Fuse holders in size x 38 mm and Class CC 3 For installing fused loaded motor starter combinations. IEC 09-1, -; IEC 097-; UL 8-1, File No. E1717 CSA 509, 5-01 Auxiliary switches: UL 508, File No. E Class CC fuse systems 3 These comply with American standard and have UL and CSA approval, for customers exporting OEM products and mechanical engineers. Modern design with touch protection according to BGV A3 for use in branch circuit protection. Fuse holders: UL 8-1, E1717 CSA. Fuse links: UL 8-, File No. E5818, CSA 3137, 1-0 and 1-8 Busbar systems 0 Busbars for NEOZED fuse bases, NEOZED fuse disconnectors, MINIZED switch disconnectors, DIAZED fuse systems and for the cylindrical fuse systems. Compact cylindrical fuse holders for busbars. DIN EN (VDE UL 8-1, E Siemens /01

5 Siemens AG 015 Introduction Devices Page Application Standards Used in 3NA, 3ND LV HRC fuse systems LV HRC fuse links 5 Fuse links from A to 150 A for selective line protection and system protection in non-residential buildings, industry and power utilities. IEC 09-1, -; EN 09-1; DIN VDE 03-; CSA Non-residential buildings Residential buildings Industry LV HRC signal detectors 8 Signal detectors for when a fuse is tripped on all LV HRC fuse links with combination or front indicators with non-insulated grip lugs. Plus the comprehensive accessory range required for LV HRC fuse systems. LV HRC fuse bases and accessories 9 Fuse bases for screw or snap-on mounting onto standard mounting rails, available as 1-pole or 3-pole version. SITOR semiconductor fuses LV HRC design 78 Fuse links in LV HRC design and a huge variety of models support a wide range of applications from 500 V to 1500 V and 150 A to 0 A. Fuses with slotted blade contacts, bolt-on links or female thread and special designs. -- IEC 09-1, -; EN 09-1; DIN VDE 03- UL 8-1, File No.E1717-IZLT (only downstream from branch circuit protection CSA C. No UL 8-13, File No. E17357-JFHR Cylindrical fuse design 135 Fuse links, fuse holders usable as fuse switch disconnectors and fuse bases up to 00/90 V AC and 00/700 V DC from 1 A to 0 A in the sizes 38 mm, 1 51 mm and 58 mm. Fuse links: UL 8-13, File No. E17357-JFHR CSA 8170, 1-30 Fuse holders: UL 8-1, File No. E1717- IZLT CSA 8170, NEOZED and DIAZED design 1 NEOZED fuse links for 00 V AC and 50 V DC and DIAZED for 500 V AC and 500 V DC Photovoltaic fuses PV cylindrical fuses 15 Fuses with a rated voltage of 00 V DC and operational class gpv for the protection of photovoltaic modules, their connecting cables and other components. IEC 09- PV cumulative fuses 170 Fuses with a rated voltage of 00 V and 1500 V DC, a rated current of 3 A to 30 A and operational class gpv for the protection of connecting cables and other components. IEC09- Siemens /01 3

6 Siemens AG 015 Introduction Overview Rated voltage U n The rated voltage is the designated voltage of the fuse and is used to determine its test conditions and operational voltage limits. For LV HRC and SITOR fuse links, the rated voltage is always the rms value of an AC voltage. For wind power plants and some industrial applications, a higher voltage tolerance is demanded of the LV HRC and SITOR fuses than the tolerance of +5% defined in the standard. On request, you can obtain a manufacturer's declaration for the rated voltage of 90 V +%. In the case of NEOZED and DIAZED fuse links, a distinction is made between AC and DC voltage values. Rated current I n The rated current of a fuse link is the designated current of the fuse link and is the current up to which it can be continuously loaded under prescribed conditions without adverse affects. Rated frequency The rated frequency is the frequency for which the fuse link is rated with regard to power dissipation, current, voltage, characteristic curve and breaking capacity. Selectivity Several fuses are usually connected in series in a system. Selectivity ensures that only the faulty electric circuit and not all operating processes are interrupted in a system in serious cases. Siemens fuses of operational class gg, at an operational voltage of up to 00 V AC and a ratio of 1:1.5, are interselective, i.e. from rated current level to rated current level. This is achieved by means of the considerably smaller band of scatter of ± 5% of the time/current characteristics, which far exceeds the demand for a ratio of 1:1. specified in the standard. It is therefore possible to use smaller conductor cross-sections due to the lower rated currents. Breaking capacity The rated breaking capacity is the highest prospective short-circuit current I p that the fuse link can blow under prescribed conditions. A key feature of these fuses is their high rated breaking capacity with the smallest footprint. The basic demands and circuit data for tests voltage, power factor, actuating angle etc. are specified in both national (DIN VDE 03 and international (IEC 09 regulations. However, for a constant fail-safe breaking capacity, from the smallest non-permissible overload current through to the highest short-circuit current, a number of quality characteristics need to be taken into account when designing and manufacturing fuse links. These include the design of the fuse element with regard to dimensions and punch dimension and its position in the fuse body, as well as its compressive strength and the thermal resistance of the body. The chemical purity, particle size and the density of the quartz sand also play a key role. The rated breaking capacity for AC voltage for NEOZED fuses - and the majority of DIAZED fuses - is 50 ka, and in the case of our LV HRC fuses (NH type, it is even ka. The various type ranges of SITOR semiconductor fuses have different switching capacities ranging from 50 to 0 ka.. Faster arcing and precise arc quenching are the requirements for a reliable breaking capacity. Operational classes Fuses are categorized according to function and operational classes. The first letter defines the function class and the second the object to be protected: 1. letter a = Partial range protection (accompanied fuses: Fuse links that carry currents at least up to their specified rated current and can switch currents above a specific multiple of their rated current up to their rated breaking current. g = Full range protection (general purpose fuses: Fuse links that can continuously carry currents up to at least their specified rated current and can switch currents from the smallest melting current through to the breaking current. Overload and short-circuit protection.. letter G = Cable and line protection (general applications M = Switching device protection in motor circuits (for protection of motor circuits R, S= Semiconductor protection/thyristor protection (for protection of rectifiers L = Cable and line protection (in acc. with the old, no longer valid DIN VDE B = Mine equipment protection Tr = Transformer protection The designations slow and quick still apply to DIAZED fuses. These are defined in IEC/CEE/DIN VDE. In the case of quick characteristics, the fuse blows in the breaking range faster than those of operational class gg. In the case of DIAZED fuse links for DC railway network protection, the slow characteristic is particularly suitable for switching off direct currents with greater inductance. Both characteristics are also suitable for the protection of cables and lines. Full range fuses (gg, gr, quick, slow reliably break the current in the event of non-permissible overload and shortcircuit currents. Partial range fuses (am, ar exclusively serve short-circuit protection. Siemens /01

7 Siemens AG 015 The following operational classes are included in the product range: gg (DIN VDE/IEC = Full range cable and line protection am (DIN VFE/IEC = Partial ranges switching device protection ar (DIN VDE/IEC = Partial range semiconductor protection gr (DIN VDE/IEC = Full range semiconductor protection gs (DIN VDE/IEC = Full range semiconductor protection and cable and line protection quick(din VDE/IEC/CEE = Full range cable and line protection slow(din VDE = Full range cable and line protection Characteristic curves (time/current characteristic curves The time/current characteristic curve specifies the virtual time (e.g. the melting time as a function of the prospective current under specific operating conditions. Melting times of fuse links are presented in the time/current diagrams with logarithmic subdivision as a function of their currents. The melting time characteristic curve extends from the lowest melting current, which still just causes the melting conductor to melt asymptotically to the I t line of equal Joulean heat values in the range of higher short-circuit currents, which specifies the constant melting heat value I t. For the sake of simplicity, the time/current characteristics diagrams omit the I t lines (c. t [s] 9 5 a Introduction Virtual time t v The virtual time is the time span calculated when a I t value is divided by the square of the prospective current: i t v dt = I p The time/current characteristic curve specifies the prospective current I p and the virtual melting time t vs. Prospective short-circuit current I p The prospective short-circuit current is the rms value of the line-frequency AC component, or the value of direct current to be expected in the event of a short-circuit occurring downstream of the fuse, were the fuse to be replaced by a component of negligible impedance. Let-through current characteristic curves The let-through current characteristic curve specifies the value of the let-through current at 50 Hz as a function of the prospective current. The let-through current I c is the maximum instantaneous value of the current reached during a switching operation of a fuse. The fuse element of the fuse links melts so quickly at very high currents that the surge short-circuit current I p is prevented from occurring. The highest instantaneous value of the current reached during the breaking cycle is called the let-through current I c. The current limits are specified in the current limiting diagrams, otherwise known as let-through current diagrams. U 1 b c 1 3 min [A] I01_099a U s : Arc voltage General representation of the time/current characteristic curve of a fuse link of operational class gl/gg I min : Smallest melting current a: Melting time/current characteristic b: Breaking time characteristic curve c: I t line The curve of the characteristic depends on the outward heat transfer from the fuse element. DIN VDE 03 specifies tolerance-dependent time/current ranges within which the characteristic curves of the fuse must lie. Deviations of ± % are permissible in the direction of the current axis. With Siemens LV HRC fuse links of operational class gg, the deviations work out at less than ± 5 %, a mark of our outstanding production accuracy. For currents up to approx. 0 I n, the melting time/current characteristic curves are the same as the breaking time characteristic curves. In the case of higher short-circuit currents, the two characteristic curves move apart, influenced by the respective arc quenching time. The difference between both lines (= arc quenching time also depends on the power factor, the operational voltage and the breaking current. The Siemens characteristic curves show the mean virtual melting time characteristic curves recorded at an ambient temperature of (0 ±5 C. They do not apply to preloaded fuse links. P c t s t L c : Maximum let-through current t s : Pre-arcing time t L : Arcing time : Peak short-circuit current Oscillograph of a short-circuit current breaking operation through a fuse link P t t I01_0997b Siemens /01 5

8 Siemens AG 015 Introduction Current limiting As well as a fail-safe rated breaking capacity, the current-limiting effect of a fuse link is of key importance for the cost effectiveness of a system. In the event of short-circuit breaking by a fuse, the short-circuit current continues to flow through the network until the fuse link is switched off. However, the short-circuit current is only limited by the system impedance. The simultaneous melting of all the bottlenecks of a fuse element produce a sequence of tiny partial arcs that ensure a fast breaking operation with strong current limiting. The current limitation is also strongly influenced by the production quality of the fuse - which in the case of Siemens fuses is extremely high. For example, an LV HRC fuse link, size ( A limits a short-circuit current with a possible rms value of approximately 50 ka to a let-through current with a peak value of approx. 18 ka. This strong current limitation provides constant protection for the system against excessive loads. c 0 A 50 A A Current limitation diagram Let-through current diagram of LV HRC fuse links, size 00 Operational class gl/gg Rated currents, A, A, 50 A, 0 A Legend t vs = Virtual melting time I c = Max. let-through current I eff (I rms = rms value of the prospective short-circuit current I t s = Melting I tvalue I t a =Breaking I tvalue I n = Rated current P v = Rated power dissipation = Temperature rise k A = Correction factor for I tvalue U w = Recovery voltage Û s = Peak arc voltage I p = Peak short-circuit current = Peak short-circuit current with largest DC component % = Peak short-circuit current without DC component U =Voltage i = Current t s = Melting time t L = Arc quenching time A I01_0998a eff Rated power dissipation Rated power dissipation is the power loss during the load of a fuse link with its rated current under prescribed conditions. The cost effectiveness of a fuse depends largely on the rated power dissipation (power loss. This should be as low as possible and have low self-heating. However, when assessing the power loss of a fuse, it must also be taken into account that there is a physical dependence between the rated breaking capacity and the rated power dissipation. On the one hand, fuse elements need to be very thick in order to achieve the lowest possible resistance value, on the other, a high rated breaking capacity requires the thinnest possible fuse elements in order to achieve reliable arc quenching. Siemens fuses have the lowest possible rated power dissipation while also providing the highest possible load breaking reliability. These values lie far below the limit values specified in the regulations. This means a low temperature rise, reliable breaking capacity and high cost effectiveness. I t value The I t value (joule integral is the integral of the current squared over a specific time interval: t 1 I t = i dt t 0 Specifies the I t values for the melting process (I t s and for the breaking cycle (I t A, - sum of melting and quenching I t value. The melting I t value, also known as the total I t value or breaking I t value, is particularly important when dimensioning SITOR semiconductor fuses. This value depends on the voltage and is specified with the rated voltage. Peak arc voltage Û s The peak arc voltage is the maximum value of the voltage that occurs at the connections of the fuse link during the arc quenching time. Residual value factor RV The residual value factor is a reduction factor for determining the permissible load period of the fuse link with currents that exceed the permissible load current I n ' (see rated current I n. This factor is applied when dimensioning SITOR semiconductor fuses. Varying load factor VL The varying load factor is a reduction factor for the rated current with varying load states. This factor is applied when dimensioning SITOR semiconductor fuses. Recovery voltage U w The recovery voltage (rms value is the voltage that occurs at the connections of a fuse link after the power is cut off. Siemens /01

9 Siemens AG 015 Introduction More information Load capability with increased ambient temperature The time/current characteristic curve of the NEOZED/DIAZED and LV HRC fuse links is based on an ambient temperature of 0 C ±5 C in accordance with DIN VDE 03. When used in higher ambient temperatures (see diagram a reduced loadcarrying capacity must be planned for. At an ambient temperature of 50 C, for example, an LV HRC fuse link should be dimensioned for only 90 % of the rated current. While the short-circuit behavior is not influenced by an increased ambient temperature, it is influenced by overload and operation at rated value. Current carrying capacity [%] Ambient temperature [ C] I01_08c Influence of the ambient temperature on the load capability of NEOZED/DIAZED and LV HRC fuses of operational class gg with natural convection in the distribution board. Assignment of cable and line protection When gg fuses are assigned for cable and line protection against overloading, the following conditions must be met in order to comply with DIN VDE 00 Part 30: (1 I B = I n = I z (rated current rule ( I = 1.5 x I z (tripping rule I B : Operational current of electrical circuit I n : Rated current of selected protective device I z : Permissible current carrying capacity of the cable or line under specified operating conditions I : Tripping current of the protective device under specified operating conditions (high test current. These days, the factor 1.5 has become an internationally accepted compromise of the protection and utilization ratio of a line, taking into account the breaking response of the protective device (e.g. fuse. In compliance with the supplementary requirements for DIN VDE 03, Siemens fuse links of operational class gg comply with the following condition: Load breaking switching with I =1.5 I n during conventional test duration under special test conditions in accordance with the aforementioned supplementary requirements of DIN VDE 03. This therefore permits direct assignment. Siemens /01 7

10 Siemens AG 015 NEOZED NEOZED fuse links Overview The NEOZED fuse system is primarily used in distribution technology and industrial switchgear assemblies. The system is easy to use and is also approved for domestic installation. The MINIZED switch disconnectors are primarily used in switchgear assemblies and control engineering. They are approved for switching loads as well as for safe switching in the event of short circuits. The MINIZED D0 is also suitable for use upstream of the meter in household applications in compliance with the recommendations of the VDEW according to TAB 007. Due to its compact design, the MINIZED D01 fuse switch disconnector is primarily used in control engineering. The NEOZED fuse bases are the most cost-effective solution for using NEOZED fuses. All NEOZED bases must be fed from the bottom to ensure that the threaded ring is insulated during removal of the fuse link. The terminals of the NEOZED bases are available in different versions and designs to support the various installation methods. Fuse bases D01 with terminal version BB Incoming feeders, clamp-type terminal B Outgoing feeders, clamp-type terminal B Fuse bases D0, with terminal version KS Incoming feeders, screw head contact K Outgoing feeders, saddle terminal S Fuse bases D0, with terminal version SS Incoming feeders, saddle terminal S Outgoing feeders, saddle terminal S 8 Siemens /01

11 Siemens AG 015 NEOZED NEOZED fuse links Technical specifications NEOZED fuse links 5SE Standards IEC 09-3; DIN VDE 03-3 Operational class gg Rated voltage U n V AC 00 V DC 50 Rated current I n A... 0 Rated breaking capacity ka AC 50 ka DC 8 Non-interchangeability Using adapter sleeves Resistance to climate C Up to 5 at 95 % rel. humidity Ambient temperature C , humidity 90 % at 0 MINIZED switch disconnectors D0 5SG71 MINIZED fuse switch disconnectors D01 5SG7 Fuse bases, made of ceramic D01 5SG15 5SG55 D0 5SG1 5SG5 D03 5SG18 Comfort bases D01/0 5SG1.01 5SG5.01 Fuse bases 5SG1.30 5SG1.31 5SG5.30 Standards DIN VDE 038; IEC 09-3; DIN VDE 03-3 EN (VDE 00-7 IEC/EN Main switch characteristic, Yes EN 00-1 Insulation characteristic Yes EN 0-1 Rated voltage U n V AC 30/00, 0/ P V DC P in series V DC Rated current I n A /3 1/3 Rated insulation voltage V AC Rated impulse withstand voltage kv AC.5 -- Overvoltage category IV IV -- Utilization category acc. to VDE 038 AC- A Utilization category acc. to EN AC- A A AC- B A AC-3 B A DC- B A Sealable Yes Yes, with sealable screw caps When switched on Mounting position Any, preferably vertical Reduction factor of I n with 18 pole Side-by-side mounting On top of one another, with vertical standard mounting rail Degree of protection acc. to IEC 059 IP0, with connected conductors 1 Terminals Yes No Yes With touch protection acc. to BGV A3 Ambient temperature C , humidity 90 % at 0 Terminal versions B K, S K/S Conductor cross-sections Solid and stranded mm Flexible, with end sleeve mm Finely stranded, with end sleeve mm Tightening torque Nm / Degree of protection IP0 is tested according to the applicable regulations with a straight test finger (from the front; the device must be mounted and equipped with a cover or other enclosure. Siemens /01 9

12 Siemens AG 015 NEOZED NEOZED fuse links Dimensional drawings 5SG71.3 MINIZED D0 switch disconnectors, with draw-out technology!! #! # ' # # % # # & & % 1 1P 1P+N P 3P 3P+N Locking cap for MINIZED D0 switch disconnectors I01_1707 5SG7 MINIZED D01 fuse switch disconnectors, with draw-out technology I01_07988a 1P 1P+N, P 3P 3P+N Fuse bases with touch protection BGV A3 (VBG, molded plastic Sizes D01/D0, with combined terminal, can be busbar mounted With cover &! # 58,7 5 71,5 I01_0753b % & 1!, 79,8 7, 59, Protective caps 5SG1301, 5SG1701 5SG5301, 5SG5701 5SG1330, 5SG1331, 5SG1730, 5SG1731 5SG5330, 5SG5730 Siemens /01

13 Siemens AG 015 NEOZED NEOZED fuse links NEOZED fuse bases made from ceramic Sizes D01/D0/D03 d touch protection cover screw cap h b k g a i c e I01_058b 5SG15 5SG55 Type Version Size Connection type NEOZED covers made of molded plastic Dimensions a b c d e g Not sealed/ Sealed h i k Snap-on with cover 5SG pole D01 BB / SG153 D0 SS / SG193 D0 KS / SG pole D01 BB / SG553 D0 SS / SG593 D0 KS / Snap-on without cover 5SG pole D01 BB / SG155 D0 SS / SG195 D0 KS / SG181 D03 KS SG pole D01 BB / SG555 D0 SS / SG595 D0 KS / Screw-on without cover 5SG pole D01 BB / SG150 D0 SS / SG18 D03 KS SG pole D01 BB / SG550 D0 SS / SG590 D0 KS / Legend BB = Clamp-type terminal at incoming feeder Connection type: Clamp-type terminal at outgoing feeder K = Screw head contact SS = Saddle terminal at incoming feeder B = Clamp-type terminal Saddle terminal at outgoing feeder S = Saddle terminal KS = Screw head contact at incoming feeder Saddle terminal at outgoing feeder NEOZED covers for NEOZED fuse bases, made of molded plastic 5 71,5 I_07537a, 79,8 1 5SH5 (A1 5SH55 (A NEOZED covers for NEOZED fuse bases, made of ceramic I01_ I01_ I01_ SH551 (A and 5SH553 (A 5SH55 (A5 and 5SH55 (A11 5SH533 (A Siemens /01 11

14 Siemens AG 015 NEOZED NEOZED fuse links NEOZED screw caps 5SH Type Size Sealable For mounting depth a b Dimensions 5SH11 D SH13 D SH31 D SH33 D SH0 D SH317 D SH3 D a b NEOZED fuse links Size A D01/E D0/E D03/M n Size/thread Rated current in A Dimension d min Dimension d 3 Dimension d max Dimension h D01/E D0/E D03/M Circuit diagrams Graphic symbols 5SG71.3 MINIZED D0 switch disconnectors, with draw-out technology 1 1 N N N 5SG7113 5SG7153 5SG713 5SG7133 5SG7133-8BA5 5SG7133-8BA35 5SG7133-8BA50 1P 1P+N P 3P 3P+N 5SG713 N 5SG7 MINIZED D01 fuse switch disconnectors, with draw-out technology 1 1 N N N 5SG7 5SG750 5SG70 5SG730 5SG70 1P 1P+N P 3P 3P+N N NEOZED fuse bases/fuses in general 5SG1 1P 5SG5 3P 1 Siemens /01

15 NEOZED NEOZED fuse links Characteristic curves Series 5SE Sizes: D01, D0, D03 Operational class: gg Rated voltage: 00 V AC/50 V DC Rated current:... 0 A Time/current characteristics diagram [s]? Siemens AG 015 vs A A A A 13 A 1 A 0 A 5 A 3 A 35 A 0 A 50 A 3 A 80 A 0 A p [A] I01_887 Melting I t values diagram I I #! I I I! I I & & &! & A BB Table, see page 1 &! #! #! #! 1 & & ' Current limitation diagram! &! #! #! #! 1 & & & & &! & & # Peak short-circuit current with largest DC component % Peak short-circuit current without DC component A BB Siemens /01 13

16 Siemens AG 015 NEOZED NEOZED fuse links Series 5SE Sizes: Operational class: Rated voltage: Rated current: D01, D0, D03 gg 00 V AC/50 V DC... 0 A Type I n P v I t s I t a 1 ms ms 30 V AC 00 V AC (t < ms A W K A s A s A s A s 5SE SE SE SE SE013-A SE SE SE SE SE SE SE SE SE SE Siemens /01

17 Siemens AG 015 DIAZED Overview Benefits The DIAZED fuse system is one of the oldest fuse systems in the world. It was developed by Siemens as far back as 190. It is still the standard fuse system in many countries to this day. It is particularly widely used in the harsh environments of industrial applications. The series is available with rated voltages from 500 V to 750 V. 3 All DIAZED bases must be fed from the bottom to ensure an 1 insulated threaded ring when the fuse link is being removed. Reliable contact of the fuse links is only ensured when used together with DIAZED screw adapters. 5 The terminals of the DIAZED bases are available in different versions and designs to support the various installation methods. 9 The high-performing EZR bus-mounting system for screw fixing is an outstanding feature. The busbars, which are particularly suited for bus-mounting bases, have a load capacity of up to 150 A with lateral infeed DIAZED stands for Diametral gestuftes zweiteiliges Sicherungssystem mit Edisongewinde (diametral two-step fuse system with 1 DIAZED cap for fuse bases Edison screw. DIAZED collar for fuse bases 3 DIAZED fuse bases DIAZED cover for fuse bases 5 9 DIAZED screw adapter DIAZED fuse link 7 11 DIAZED screw cap 8 DIAZED fuse base (with touch protection BGV A3 8 i01_18300 DIII fuse bases with terminal version BS Outgoing feeders (top, saddle terminal S Incoming feeders (bottom, clamp-type terminal B NDZ fuse bases with terminal version KK Outgoing feeders (top, screw head contact K Incoming feeders (bottom, screw head contact K DIII fuse bases with terminal version BB Outgoing feeders (top, clamp-type terminal B Incoming feeders (bottom, clamp-type terminal B DIII fuse bases with terminal version SS Outgoing feeders (top, saddle terminal S Incoming feeders (bottom, saddle terminal S Siemens /01 15

18 Siemens AG 015 DIAZED Technical specifications 5SA, 5SB, 5SC, 5SD Standards IEC 09-3; DIN VDE 035; DIN VDE 03-3; CEE 1 Operational class Acc. to IEC 09; gg DIN VDE 03 Characteristic Acc. to DIN VDE 035 Slow and quick Rated voltage U n V AC 500, 90, 750 V DC 500, 00, 750 Rated current I n A... 0 Rated breaking capacity ka AC 50, 0 at E1 ka DC 8, 1. at E1 Overvoltage category III II (DIAZED fuse bases made of molded plastic for use at 90 V AC / 00 V DC Mounting position Any, preferably vertical Non-interchangeability Using screw adapter or adapter sleeves Degree of protection Acc. to IEC 059 IP0, with connected conductors 1 Resistance to climate C Up to 5, at 95 % rel. humidity Ambient temperature C , humidity 90 % at 0 Terminal version B K S R Size DII DIII NDz DII DIII DIII DIV DII DIII Conductor cross-sections Rigid, min. mm Rigid, max. mm Flexible, with end sleeve mm Tightening torque Screw M Nm Screw M5 Nm.0 -- Screw M Nm Screw M8 Nm Degree of protection IP0 is tested according to the applicable regulations with a straight test finger (from the front; the device must be mounted and equipped with a cover or other enclosure. 1 Siemens /01

19 Siemens AG 015 DIAZED Dimensional drawings DIAZED fuse links 5SA1, 5SA Size/thread TNDz/E1, NDz/E1 d I01_051a Rated current in A Dimension d , 5SB1, 5SB Size/thread DII/E7 d,5 I01_07 Rated current in A Dimension d SB3, 5SB Size/thread DIII/E33 d 8 I01_08 Rated current in A Dimension d SC1, 5SC Size/thread DIV/R1¼ 3,5 I01_08 Rated current in A 80 0 Dimension d 5 7 d 57 5SD, 5SD8 Size/thread DIII/E33 I01_039a ød ø8 Rated current in A Dimension d Siemens /01 17

20 Siemens AG 015 DIAZED DIAZED fuse bases made of ceramic 5SF1 Version Connection type Dimensions Type a b c d e g h i d NDz/5 A Øi 5SF1 KK DII/5 A 5SF05 BB SF BB DIII/3 A 5SF5 BS a c 5SF115 SS e 5SF1 BS DIV/0 A 5SF1 Flat terminal h b g I01_0 5SF M max.113 I_03a DIAZED fuse bases made of molded plastic 5SF1, 5SF5 Type Dimensions a b 5SF SF SF SF I01_ a b 3, Siemens /01

21 Siemens AG 015 DIAZED DIAZED EZR bus-mounting bases 5SF005 5SF ,3 18 0, , , max.38, max.83 I_0a 3 max.9 I_05a max.83 DIAZED screw caps/cover rings made of molded plastic/ceramic Screw caps Cover rings Screw caps Cover rings 5SH1 5SH3 Size/thread Type Dimensions Type Dimensions a I01_057 I01_1371a b a b NDz/E1 5SH111 3 DII/E7 5SH SH SH SH a 5SH DIII/E33 5SH SH SH SH a 5SH SH SH b b DIAZED caps made of molded plastic 5SH Size/thread Type Dimensions a max b max c max d max d NDz/E1 5SH Øi DII/E7 5SH DIII/E33 5SH h b g a c e I01_0 Siemens /01 19

22 DIAZED Characteristic curves Series 5SA Size: E1 Characteristics: Slow Rated voltage: 500 V AC/500 V DC Rated current:... 5 A Time/current characteristics diagram Melting I t values diagram I? Siemens AG 015 L I! 1 '? I I # 1 % # #?! # # I I I! I I & & &! & A BB! Current limitation diagram # & & A BB &! 1 %! > Type I n P v I t s 1 ms ms A W K A s A s 5SA SA SA SA SA SA SA ! # Type I t a 30 V AC 30 V AC 500 V AC A s A s A s 5SA SA1 3 5SA SA SA SA SA &! & & # A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component 0 Siemens /01

23 ? Siemens AG 015 Series 5SB, 5SB, 5SC Size: DII, DIII, DIV Operational class: gg Rated voltage: 500 V AC/500 V DC Rated current:... 0 A Time/current characteristics diagram Melting I t values diagram DIAZED I L I! #!! # #! & 1 % # # = I I # 1 % # # = &! #! #!! # I I I! I I & & &! & A BB! Current limitation diagram #! &! & & Peak short-circuit current with largest DC component % Peak short-circuit current without DC component &! A BB &! #! #! # & & # A BB 1 # # > Type I n P v I t s 1 ms ms A W K A s A s 5SB SB SB SB SB SB SB SB SB SB SB SC SC Type I t a 30 V AC 30 V AC 500 V AC A s A s A s 5SB SB SB SB SB SB SB SB SB SB SB SC SC Siemens /01 1

24 ? Siemens AG 015 DIAZED Series 5SD8 Size: DIII Operational class: gg Rated voltage: 90 V AC/00 V DC Rated current:... 3 A Time/current characteristics diagram Melting I t values diagram I L I! 1? I I # 1 # >! #! #!! # #! # I I I! I I & & &! & A BB! Current limitation diagram & & A BB! #! # # &! 1 % = Type I n P v I t s I t a ms V AC A W A s A s 5SD SD SD SD SD SD SD SD SD SD ! &! & & # A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component Siemens /01

25 ? Siemens AG 015 Series 5SD Size: DIII Operational class: Quick (railway network protection Rated voltage: 750 V AC/750 V DC Rated current:... 3 A Time/current characteristics diagram Melting I t values diagram DIAZED I L I! 1 & = I I #! # 1 % % >!! # #!! # # I I I! I I & & &! & A BB! Current limitation diagram & & A BB! #! # # &! 1 = Type I n P v I t s I t a ms 500 V AC A W A s A s 5SD SD SD SD SD SD SD SD SD SD ! &! & & # A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component Siemens /01 3

26 Siemens AG 015 Cylindrical Cylindrical fuse links and cylindrical fuse holders Overview Cylindrical fuses are standard in Europe. There are a range of different cylindrical fuse links and holders that comply with the standards IEC 09-1, - and -3, and which are suitable for use in industrial applications. In South West Europe they are also approved for use in residential buildings. The cylindrical fuse holders are also approved according to UL 51. The cylindrical fuse holders are tested and approved as fuse disconnectors according to the switching device standard IEC They are not suitable for switching loads. Cylindrical fuse holders can be supplied with or without signal detectors. In the case of devices with signal detector, a small electronic device with LED is located behind an inspection window in the plug-in module. If the inserted fuse link is tripped, this is indicated by the LED flashing. The switching state of the fuse holder can be signaled over a laterally retrofitted auxiliary switch, which enables the integration of the fuses in the automation process. Technical specifications Benefits Devices with pole number 1P+N are available in a single modular width. This reduces the footprint by 50 % The sliding catch for type ranges 8 x 3 mm and x 38 mm enables the removal of individual devices from the assembly Space for a spare fuse in the plug-in module enables the fast replacement of fuses. This saves time and money and increases system availability A flashing LED signals that a fuse link has been tripped. This enables fast detection during runtime Cylindrical fuse links 3NW3.. 3NW0.. 3NW1.. 3NW.. 3NW80.. 3NW81.. 3NW8.. Size mm mm Standards IEC 09-1, -, -3; NF C 0-00; NF C 3-, -11; NBN C 39-, CEI 3-, -1 Operational class gg am Rated voltages U n V AC or 500 Rated current I n A Rated breaking capacity 500 V versions ka AC V versions ka AC Mounting position Any, preferably vertical Cylindrical fuse holders 3NW73.. 3NW70.. 3NW71.. 3NW7.. Size mm mm Standards IEC 09-1, -, -3; NF C 0-00, NF C 3-, -11; NBN C 39--1; CEI 3-, -1; UL 8-1 Approvals Acc. to UL -- U U -- Acc. to CSA -- s s -- Rated voltage U n V AC Acc. to UL/CSA V AC Rated current I n A AC Rated breaking capacity ka 0 0 Breaking capacity Utilization category AC-0B (switching without load, DC-0B No-voltage changing Yes Of fuse links Sealable Yes When installed Mounting position Any, preferably vertical Degree of protection Acc. to IEC 059 IP0, with connected conductors 1 Terminals with touch protection Yes According to BGV A3 at incoming and outgoing feeder Ambient temperature C , humidity 90 % at +0 Conductor cross-sections Rigid mm Stranded mm Finely stranded, with end sleeve mm AWG (American Wire Gauge AWG Tightening torque Nm Degree of protection IP0 is tested according to the applicable regulations with a straight test finger (from the front; the device must be mounted and equipped with a cover or other enclosure. Max. cross-section mm with K8 crimper from Klauke. Siemens /01

27 Siemens AG 015 Cylindrical Cylindrical fuse links and cylindrical fuse holders Dimensional drawings I_070c 31,5 8,5 I_0703c 38,3 Size 8 3 mm 38 mm 1 51 mm 58 mm 51 I_0701c 1,3 58 I_070c, I01_11 3NW70, 3NW73 1P 1P + N P 3P 3P+N I01_07853b NW71 1P 1P+N/P 3P 3P+N I01_0789c NW7 1P 1P+N/P 3P 3P+N Auxiliary switches I01_891 I01_ ,8 8,5 9 3NW7901 3NW790 3NW7903 Siemens /01 5

28 Siemens AG 015 Cylindrical Cylindrical fuse links and cylindrical fuse holders Circuit diagrams Graphic symbols N N 1 1 N N 1P 1P+N P 3P 3P+N Auxiliary switches 1 13/1 3NW7901 3NW NW7903 Siemens /01

29 Siemens AG 015 Cylindrical Cylindrical fuse links and cylindrical fuse holders Characteristic curves 3NW0 series Size: 38 mm Operational class: gg Rated voltage: 500 V AC ( A, 00 V AC (3 A Rated current:... 3 A Time/current characteristics diagram Melting I t values diagram [s] vs Virtual pre-arcing time A 5 A 0 A 1 A 1 A A 8 A A A A 1 A 0,5 A I01_19158 t [A s] V 00 V 30 V ²t s ²t a I01_19a Prospective short-circuit current p [A] - 0, n [A] Current limitation diagram [A] c Peak current A 5 A 0 A 1 A 1 A A 8 A A m =,3 p A A 1 A 0,5 A Prospective short-circuit current [A] p I01_19159 Type I n P v I t s I t a 1 ms 30 V AC 00 V AC 500 V AC A W K A s A s A s A s 3NW On req NW On req NW On req NW On req NW On req NW On req NW On req NW On req NW On req NW On req NW On req NW On req Peak short-circuit current with largest DC component % Peak short-circuit current without DC component Siemens /01 7

30 Siemens AG 015 Cylindrical Cylindrical fuse links and cylindrical fuse holders 3NW1series Size: 1 51 mm Operational class: gg Rated voltage: 500 V AC (... 0 A, 00 V AC (50 A Rated current: A Time/current characteristics diagram Melting I t values diagram I L I! & #! # 1! > I # #! J = J I 1 # ' '?! & #! # Current limitation diagram [A] c 3 & & A BB 1 &! 50 A 0 A 3 A 5 A 0 A 1 A 1 A A 8 A A A I01_050c Type I n P v I t s I t a 1 ms 30 V AC 00 V AC 500 V AC A W K A s A s A s A s 3NW NW NW NW NW NW NW NW NW NW NW rms[a] Peak short-circuit current with largest DC component % Peak short-circuit current without DC component 8 Siemens /01

31 ? Siemens AG 015 Cylindrical 3NW series Size: 58 mm Operational class: gg Rated voltage: 500 V AC ( A, 00 V AC (0 A Rated current: A Time/current characteristics diagram Cylindrical fuse links and cylindrical fuse holders Melting I t values diagram I L I! & #! #! & 1 > I # #! J = J I 1?! & #! #! & Current limitation diagram! & &! A BB &! #! # & & 1 # # & > Type I n P v I t s I t a 1 ms 30 V AC 00 V AC 500 V AC A W K A s A s A s A s 3NW NW NW NW NW NW NW NW NW NW NW NW &! & # & A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component Siemens /01 9

32 ? Siemens AG 015 Cylindrical Cylindrical fuse links and cylindrical fuse holders 3NW30.-1 series Size: 8 3 mm Operational class: gg Rated voltage: 00 V AC Rated current:... 0 A Time/current characteristics diagram Melting I t values diagram I L I 1 # > I! J = 1?!! J I Current limitation diagram & & A BB &! Type I n P v I t s I t a 1 ms 00 V AC A W K A s A s 3NW NW NW NW NW NW # # ' >! &! & # & A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component 30 Siemens /01

33 ? Siemens AG 015 Cylindrical Series 3NW8 Size: 38 mm, 1 51 mm, 58 mm Operational class: am Rated voltage: 500 V AC, 00 V AC (3NW8-1, 3NW830-1 Rated current: A Time/current characteristics diagram Cylindrical fuse links and cylindrical fuse holders Melting I t values diagram I L I! 1 # % > I # J = 1 ' ' # > # & #! #! & # J I!! & & Current limitation diagram! &! Peak short-circuit current with largest DC component % Peak short-circuit current without DC component A BB &! #! # & # & &! & & # A BB 1 # > # & #! #! & Type Size BK I n U n P v mm A V W 3NW x 38 am NW NW NW NW NW NW NW NW NW NW NW NW8-1 1 x NW NW NW NW NW NW NW NW NW NW NW NW808-1 x No info. 3NW803-1 No info. 3NW No info. 3NW NW NW NW NW NW NW NW NW Siemens /01 31

34 Siemens AG 015 Cylindrical Fuse holders in size x 38 mm and Class CC Overview A key feature of our three-pole fuse holders is their ultra compact design. With a width of only 5 mm, they are ideal for use with fused motor starter combinations. Because the contactor and the fuse holder have the same 5 mm width, they are easy to mount on top of one another. The strong current-limiting fuses ensure a type protection level (coordination according to IEC 097-, no damage protection for the contactor. The UL version has an SCCR value of 00 ka. The accessories are generally UL-certified. Customers can mount an auxiliary switch which signals the switching state or prevents the fuse holder from switching off under load by interrupting the contactor control, thus increasing safety for the operator and process. Busbars and a matching three-phase feeder terminal complete the product range. Benefits Compact design, especially for motor starter combinations For IEC fuses of size x 38 mm up to 3 A and Class CC UL fuses up to 30 A Meets the requirements of UL 508 with regard to clearances UL-approved microswitches, busbars and adapters for 0 mm busbar systems Optical signal detector for fast fault locating Compact cylindrical fuse holder Class CC with signal detector and mounted auxiliary switch Installation configuration of a cylindrical fuse holder and a SIRIUS contactor on busbar device adapter for the 0 mm busbar system 3 Siemens /01

35 Siemens AG 015 Cylindrical Fuse holders in size x 38 mm and Class CC Technical specifications Cylindrical fuse holders Fuse holders 3NW NW75..-1HG Size mm mm 38 Class CC Standards IEC 09; UL8-1; CSA UL8-1; CSA Approvals Acc. to UL U, UL File Number E1717 u, UL File Number E1717 Acc. to CSA s s Rated voltage U n V AC Rated current I n A AC 3 30 Rated short-circuit strength ka (at 500 V (at 90 V Breaking capacity Utilization category AC-0B (switching without load -- Rated impulse withstand voltage kv Overvoltage category III Pollution degree Max. power dissipation of the fuse link W 3 No-voltage changing of fuse links C , humidity 90 % at +0 Sealable when installed Yes Lockable with padlock Yes Mounting position Any, preferably vertical Current direction Any Degree of protection Acc. to IEC 059 IP0, with connected conductors 1 Terminals with touch protection according to BGV A3 Yes at incoming and outgoing feeder Ambient temperature C , humidity 90 % at +0 Conductor cross-sections Finely stranded, with end sleeve mm 1... AWG cables (American Wire Gauge AWG Tightening torque Nm 1.5 lb.in 13 Terminal screws PZ Auxiliary switches 3NW Standards IEC 097 Approvals U, s, UL 508, UL File Number E33003 Utilization category AC-1 DC-13 AC-15 Acc. to UL Rated voltage U n V AC V DC Rated current I n A Busbars 5ST0. For cylindrical fuse holders 3NW NW75..-1HG Pin spacing mm 15 Standards EN 0971 (VDE 00-0, IEC 097-1:00, UL 508, CSA. Approvals u, UL 8-1, UL File Number E Busbar material E-Cu 58 F5 Partition material PA-V0 Lamp wire resistance /1.5 mm C 90 Insulation coordination Overvoltage category III, degree of pollution Rated voltage U n Acc. to UL V AC Acc. to IEC V AC Maximum busbar current I n Acc. to UL A -- 5 Acc. to IEC A Degree of protection IP0 is tested according to the applicable regulations with a straight test finger (from the front; the device must be mounted and equipped with a cover or other enclosure. Siemens /01 33

36 Siemens AG 015 Cylindrical Fuse holders in size x 38 mm and Class CC Terminals 5ST00 For cylindrical fuse holders 3NW NW75..-1HG Pin spacing mm 15 Standards IEC 0999:000, UL 508 Approvals u, UL 8-1, UL File Number E Enclosure/cover material PA-V0 Lamp wire resistance /1 mm C 90 Temperature resistance PA-V0, HDT B ISO 179, C 00 UL 9-V0/1.5 Insulation coordination Overvoltage category III, degree of pollution Max. operational voltage U max Acc. to UL V AC Acc. to IEC V AC Maximum electrical load I max Acc. to UL A -- 5 Acc. to IEC A Rated current I n A 3 Conductor cross-sections Solid/stranded mm Finely stranded, with end sleeve mm Tightening torque of clamping screw Nm Siemens /01

37 Siemens AG 015 Cylindrical Fuse holders in size x 38 mm and Class CC Dimensional drawings I0_011 3NW NW753.-1HG I0_011 I0_0113 5ST0. 5ST00 Circuit diagrams Circuit diagrams I0_ NW NW753.-1HG 3NW Siemens /01 35

38 Siemens AG 015 Class CC fuse systems Overview Class CC fuses are used for branch circuit protection. The enclosed fuse holders are designed and tested to comply with the US National Electrical Code NEC.0(A. This means that when subject to continuous operation, only 80 % of the rated current is permissible as operational current. An operational current of 0 % of the rated current (30 A is only permissible short-time. The devices are prepared for the labels of the ALPHA FIX terminal blocks 8WH8-7AA15 and 8WH8-7XA05. There are three different series: Characteristic: slow 3NW1...-0HG For the protection of control transformers, reactors, inductances. Significantly slower than the minimum requirements specified by UL for Class CC Fuses of 1 s at I n Technical specifications Characteristic: quick 3NW...-0HG For a wide range of applications, for the protection of lighting installations, heating, control systems Characteristic: slow, current-limiting, 3NW3...-0HG Slow for overloads and quick for short circuits. High current limitation for the protection of motor circuits Note: For class CC compact fuse holders for motor starter combinations, see page 3. Benefits For switchgear assemblies and machine manufacturers who export their systems to the USA or Canada Easier export due to UL and CSA approvals for typical applications Modern design with touch protection to BGV A3 ensures safe installation Class CC fuse holders 3NW75.3-0HG Standards UL 8-1; CSA C. Approvals UL 8-1; UL file number E1717; CSA C. Rated voltage U n V AC 00 Rated current I n A 30 Rated conditional short-circuit current ka 00 Breaking capacity Utilization category AC-0B (switching without load Max. power dissipation of fuse links With cable, mm W 3 With cable, mm W.3 Rated impulse withstand voltage kv Overvoltage category II Pollution degree No-voltage changing of fuse links Yes Sealable when installed Yes Mounting position Any Current direction Any Degree of protection acc. to IEC 059 IP0 Terminals with touch protection according to BGV A3 Yes at incoming and outgoing feeder Ambient temperature C 5 Conductor cross-sections Solid and stranded mm AWG conductor cross-section, solid and stranded AWG Tightening torque Nm.5 ( lb.in Class CC fuse links 3NW1...-0HG 3NW...-0HG 3NW3...-0HG Standards UL 8-; CSA C. Approvals UL 8-; UL File Number E5818; CSA C. Characteristic Slow Quick Slow, current limiting Rated voltage V AC V DC ( A 300 (< 3 A, > 15 A Rated breaking capacity ka AC 00 3 Siemens /01

39 Siemens AG 015 Class CC fuse systems Dimensional drawings Ø,3 I01_ , NW1...-0HG 3NW...-0HG 3NW3...-0HG 3NW75.3-0HG Siemens /01 37

40 Siemens AG 015 Class CC fuse systems Characteristic curves 3NW1...-0HG series Time/current characteristics diagram 3NW...-0HG series Time/current characteristics diagram t vs [s] Virtual melting time , A 0,8 A 1 A 1,5 A A,5 A 3 A A 5 A A 7,5 A I0_0185 [s] Virtual melting time t vmt A A 3 A 5 A 8 A A 15 A 0 A 30 A I01_11a Prospective short-circuit current p [A] Prospective short-circuit current p [A] 3NW1...-0HG series Time/current characteristics diagram 3NW3...-0HG series Time/current characteristics diagram [s] tvs Virtual melting time A A 15 A 0 A 30 A I0_018 [s] Virtual melting time t vmt A 3 A A A 8 A A 1 A 15 A 0 A 5 A 30 A I01_113a Prospective short-circuit current p[a] Prospective short-circuit current p [A] 38 Siemens /01

41 Siemens AG 015 3NW3...-0HG series Current limitation diagram Class CC fuse systems c [A] A 5 A 0 A 15 A,8 A 1,5 A I01_ p [A] Siemens /01 39

42 Siemens AG 015 Busbar systems Overview Busbars with pin-type connections can be used for NEOZED safety switching devices and fuse bases. Busbars in mm and 1 mm versions are available. Busbars with fork plugs are used for the most frequently used NEOZED fuse bases made of ceramic. Benefits Clear and visible conductor connection that can be easily checked when using the NEOZED D0 comfort base and which facilitates cable entry Bus-mounting of NEOZED fuse bases made of molded plastic on 3-phase busbar with fork plug, which can be cut to length Bus-mounting of NEOZED fuse bases made of ceramic on 3-phase busbar with fork plug, which can be cut to length Bus-mounting of MINIZED D01 fuse switch disconnectors on 3-phase busbar with fork plug, can be cut to length Clear and visible conductor connection that can be easily checked when using MINIZED D0 switch disconnectors. This facilitates cable entry and saves time Bus-mounting of cylindrical fuse holders 8 3 mm and 38 mm with three-phase pin busbar which can be cut to length 0 Siemens /01

43 Siemens AG 015 Busbar systems Bus-mounting of SITOR cylindrical fuse holders mm x 38 mm with the same terminal connection as Class CC fuse holders with 3-phase pin busbar which can be cut to length Bus mounting with infeed through a connection terminal directly on the fuse holder up to a conductor cross-section of 5 mm² Technical specifications 5ST, 5SH Standards EN (VDE : Busbar material SF-Cu F Partition material Plastic, Cycoloy 300 Heat-resistant over 90 C Flame-retardant Self-extinguishing Dioxin and halogen-free Rated operational voltage U c V AC 00 Rated current I n Cross-section mm A 3 Cross-section 1 mm A 80 Rated impulse withstand voltage U imp kv Test pulse voltage (1./50 kv. Rated conditional short-circuit current I cc ka 5 Resistance to climate Constant atmosphere Acc. to DIN /83; 0/9; 55/0 Humid heat Acc. to IEC cycles Insulation coordination Overvoltage category III Pollution degree Maximum busbar current I S /phase Infeed at the start of the busbar - Cross-section mm A 3 - Cross-section 1 mm A 80 Infeed at the center of the busbar - Cross-section mm A 0 - Cross-section 1 mm A 130 Siemens /01 1

44 Siemens AG 015 Busbar systems 5ST HG busbars acc. to UL 508 5ST37..-0HG 5ST37..-HG 5ST3770-0HG 5ST3770-1HG Standards UL 508, CSA C. No. 1-M 95 Approvals UL 508 File No. E3803 CSA Operational voltage Acc. to IEC V AC 90 Acc. to UL 89 V AC 00 Rated conditional short-circuit current ka (RMS symmetrical 00 V for three cycles Dielectric strength kv/mm 5 Surge strength kv > 9.5 Rated current A Maximum busbar current I S /phase Infeed at the start of the busbar A Infeed at the center of the busbar A Insulation coordination Overvoltage category III Pollution degree Busbar cross-section mm Cu Infeed Any Conductor cross-sections AWG / mm Terminals Terminal tightening torque Nm lbs/in Infeed at the start of the busbar Infeed along the busbar or midpoint infeed S I01_13755 S1 S I01_1375a S The sum of the output current per branch must not be greater than the busbar current I S1. / phase Siemens /01

45 Siemens AG 015 Busbar systems Dimensional drawings 5ST37 Pin spacing in MW (modular width; 1 MW = 18 mm Dimensions of side views in mm (approx. 1 1,5 I01_ ,5 5ST3700 5ST3703 5ST370 5ST3701 5ST3705 Single-phase Single-phase Two-phase L1 1 L I01_ ,5 1,5 L1 L L3 L1 L L3 I01_ ST3708 5ST37 Three-phase 5ST371 Three-phase 18 5ST Fork spacing in MW (modular width; 1 MW = 18 mm Dimensions of side views in mm (approx. 13 3,5 5ST18 5ST187 5ST188 5ST190 5ST191 5ST19 Single-phase Two-phase Three-phase Busbars for DIAZED EZR fuse bases I01_ , I01_13a I01_137a SH3500 5SH3501 5SH5 Fork spacing in MW (modular width; 1 MW = 18 mm, dimensions of side views in mm (approx. 1,5 1,5 1, I01_ I01_ I01_ SH5517 5SH530 5SH531 5SH53 Siemens /01 3

46 18,5 Siemens AG 015 Busbar systems 5ST HG busbars acc. to UL 508 5ST37 Pin spacing in MW (modular width; 1 MW = 18 mm Dimensions of side views in mm (approx. 1 1,5 I0_ ST3701-0HG 5ST3703-0HG 5ST3705-0HG L1 1 1,5 L ,5 1,5 L1 L L3 L1 L L3 1 5ST37-0HG 5ST371-0HG 5ST3701-HG I0_01 1,5 1,5,5 3 I0_ ,5 1,5 1,5 L1 L I0_05 3 L1 L L3 I0_ ST3705-HG 5ST37-HG 1 I0_ ,5 5ST378-0HG I0_08 9,5 5ST3750-0HG 1 8,5 0 I0_01 30 I0_ ST3770-0HG 5ST3770-1HG ST3 touch protection covers Pin spacing in MW (modular width; 1 MW = 18 mm Dimensions of side views in mm (approx. 1 3,8 85, R 0,5 5,7 3,8 17,8 71, I0_09 5ST355-0HG Siemens /01

47 Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links Overview LV HRC fuse systems (NH type are used for installation systems in non-residential, commercial and industrial buildings as well as in switchgear assemblies of power utilities. They therefore protect essential building parts and systems. LV HRC fuse systems (NH type are fuse systems designed for operation by experts. There are no constructional requirements for non-interchangeability of rated current and touch protection. The components and auxiliary equipment are designed in such a way as to ensure the safe replacement of LV HRC fuse systems or isolation of systems. LV HRC fuse links are available in the sizes 000, 00, 0, 1,, 3, and a. LV HRC fuse links are available in the following operational classes: gg for cable and line protection am for short-circuit protection of switching devices in motor circuits gr or ar for protection of power semiconductors gs: The new gs operational class combines cable and line protection with semiconductor protection LV HRC fuse links of size 000 can also be used in LV HRC fuse bases, LV HRC fuse switch disconnectors, LV HRC fuse strips as well as LV HRC in-line fuse switch disconnectors of size 00. The fuse links 300 A, 355 A and 5 A comply with the standard but do not have the VDE mark. LV HRC components I01_1373a LV HRC fuse base from the SR0 busbar system LV HRC fuse base for busbar mounting LV HRC fuse base, 3-pole LV HRC fuse base, 1-pole LV HRC contact covers LV HRC fuse link LV HRC signal detector LV HRC partition LV HRC protective cover LV HRC fuse bases with swivel mechanisms, - for screw fixing on mounting plate - for screw fixing on busbar system - for claw fixing on busbar LV HRC protective cover for LV HRC fuse bases with swivel mechanism LV HRC swivel mechanism LV HRC fuse base cover LV HRC isolating blade with insulated grip lugs LV HRC isolating blade with non-insulated grip lugs LV HRC fuse puller with sleeve LV HRC fuse puller Siemens /01 5

48 Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links Technical specifications LV HRC fuse links Operational class gg Operational class am 3NA...- 3NA... 3NA3... 3NA...- 3NA ND1 3NA...-KK 3NA NA NA ND 3NA NA7... 3NA Standards IEC 09-1, -; EN 09-1; DIN VDE 03 Approvals DIN VDE 03-; CSA. No., File Number 0135_0_00 (CSA approval of fuses 500 V for 00 V Rated voltage U n Sizes 000 and 00 V AC V DC Sizes 1 and V AC V DC Size 3 V AC V DC Sizes and a (IEC design V AC V DC Rated current I n A Rated breaking capacity ka AC ka DC Contact pins Non-corroding, silver-plated Resistance to climate C at 95 % relative humidity 1 Manufacturer's confirmation of the rated voltage 90 V +% available on request. Siemens /01

49 ? Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links Characteristic curves 3NA30 series Size: 0 Operational class: gg Rated voltage: 500 V AC/0 V DC Rated current:... A Time/current characteristics diagram Melting I t values diagram I L I! #!! # #! & # 1 & & = I I % I I I! I I 1 & > # #! &! #! #! # & &! & & # A BB! Current limitation diagram! & & &! A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component # &! #! #! # &! & # & A BB 1 = Type I n P v I t s 1 ms ms A W K A s A s 3NA NA NA NA NA NA NA NA NA NA NA NA NA NA Type I t a 30 V AC 00 V AC 500 V AC A s A s A s 3NA NA NA NA NA NA NA NA NA NA NA NA NA NA Siemens /01 7

50 ? Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links 3NA31, 3NA1, 3NA71 series Size: 1 Operational class: gg Rated voltage: 500 V AC/0 V DC Rated current: A Time/current characteristics diagram Melting I t values diagram I L I! #! # #! & # # 1!? I I % 1 & > # # # &! #! #! I I # I! I I & &! & & # A BB! Current limitation diagram! & & &! A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component # # &! #! # # &! & # & A BB 1 #! > Type I n P v I t s 1 ms ms A W K A s A s 3NA35, 3NA5, 3NA NA37, 3NA7, 3NA NA31, 3NA1, 3NA NA311, 3NA11, 3NA NA3117, 3NA117, 3NA NA3, 3NA, 3NA NA31, 3NA1, 3NA NA31, 3NA1, 3NA NA3130, 3NA130, 3NA NA313, 3NA13, 3NA NA313, 3NA13, 3NA NA3, 3NA, 3NA NA31, 3NA1, 3NA NA31, 3NA1, 3NA Type I t a 30 V AC 00 V AC 500 V AC A s A s A s 3NA35, 3NA5, 3NA NA37, 3NA7, 3NA NA31, 3NA1, 3NA NA311, 3NA11, 3NA NA3117, 3NA117, 3NA NA3, 3NA, 3NA NA31, 3NA1, 3NA NA31, 3NA1, 3NA NA3130, 3NA130, 3NA NA313, 3NA13, 3NA NA313, 3NA13, 3NA NA3, 3NA, 3NA NA31, 3NA1, 3NA NA31, 3NA1, 3NA Siemens /01

51 Siemens AG 015 3NA, 3ND LV HRC 3NA31..-, 3NA1..-, 3NA71..- series Size: 1 Operational class: gg Rated voltage: 90 V AC 1 /0 V DC Rated current: A Time/current characteristics diagram Melting I t s values diagram LV HRC fuse links [s] vs Current limitation diagram [A] c 50 A 00 A A 15 A 0 A 80 A 3 A 50 A rms [A] 1 50 A 00 A A 15 A 0 A 80 A 3 A 50 A I01_00b 8 I01_00b s [A s] 8 0 s 7-1 s - s -3 s - s 50 A 5 00 A A 15 A 0 A 80 A 3 A 50 A rms [A] Type I n P v I t s 1 ms ms A W K A s A s 3NA3-, 3NA-, 3NA NA31-, 3NA1-, 3NA NA31-, 3NA1-, 3NA NA3130-, 3NA130-, 3NA NA313-, 3NA13-, 3NA NA313-, 3NA13-, 3NA NA3-, 3NA-, 3NA Type I t a 30 V AC 00 V AC 90 V AC A s A s A s 3NA3-, 3NA-, 3NA NA31-, 3NA1-, 3NA NA31-, 3NA1-, 3NA NA3130-, 3NA130-, 3NA NA313-, 3NA13-, 3NA NA313-, 3NA13-, 3NA NA3-, 3NA-, 3NA Manufacturer's confirmation of the rated voltage 90 V +% available on request. I01_003c Peak short-circuit current with largest DC component % Peak short-circuit current without DC component 85 rms [A] Siemens /01 9

52 ? Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links 3NA3, 3NA, 3NA7 series Size: Operational class: gg Rated voltage: 500 V AC/0 V DC Rated current: A Time/current characteristics diagram Melting I t values diagram I L I!! # #! & # #!! #! # # 1 & # = I I ' & I I I! I 1 % ' > % I #! # #!! # # # &! #! #! &! & & # & A BB! & Current limitation diagram! & &! & A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component! # #!! # # # &! #! #! & # & A BB 1 = Type I n P v I t s 1 ms ms A W K A s A s 3NA31, 3NA1, 3NA NA30, 3NA0, 3NA NA3, 3NA, 3NA NA3, 3NA, 3NA NA330, 3NA30, 3NA NA33, 3NA3, 3NA NA33, 3NA3, 3NA NA30, 3NA0, 3NA NA3, 3NA, 3NA NA3, 3NA, 3NA NA350, 3NA NA35, 3NA5, 3NA NA35, 3NA NA30, 3NA0, 3NA Type I t a 30 V AC 00 V AC 500 V AC A s A s A s 3NA31, 3NA1, 3NA NA30, 3NA0, 3NA NA3, 3NA, 3NA NA3, 3NA, 3NA NA330, 3NA30, 3NA NA33, 3NA3, 3NA NA33, 3NA3, 3NA NA30, 3NA0, 3NA NA3, 3NA, 3NA NA3, 3NA, 3NA NA350, 3NA NA35, 3NA5, 3NA NA35, 3NA NA30, 3NA0, 3NA Siemens /01

53 ? Siemens AG 015 3NA, 3ND LV HRC 3NA3..-, 3NA..-, 3NA7..- series Size: Operational class: gg Rated voltage: 90 V AC 1 /0 V DC Rated current: A Time/current characteristics diagram Melting I t values diagram LV HRC fuse links I L I!!! # # # & 1 % #! ' = I I ' & % I I I! I I 1 % # = #!! # # # &! &! & & # & A BB! Current limitation diagram # &! & A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component! # # # & & #!! # & & & A BB 1 % # = Type I n P v I t s 1 ms ms A W K A s A s 3NA3-, 3NA-, 3NA NA330-, 3NA30-, 3NA NA33-, 3NA3-, 3NA NA33-, 3NA3-, 3NA NA30-, 3NA0-, 3NA NA3-, 3NA-, 3NA NA3-, 3NA-, 3NA NA350-, 3NA50-, 3NA NA35-, 3NA5-, 3NA Type I t a 30 V AC 00 V AC 90 V AC A s A s A s 3NA3-, 3NA-, 3NA NA330-, 3NA30-, 3NA NA33-, 3NA3-, 3NA NA33-, 3NA3-, 3NA NA30-, 3NA0-, 3NA NA3-, 3NA-, 3NA NA3-, 3NA-, 3NA NA350-, 3NA50-, 3NA NA35-, 3NA5-, 3NA Manufacturer's confirmation of the rated voltage 90 V +% available on request. Siemens /01 51

54 ? Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links 3NA33 series Size: 3 Operational class: gg Rated voltage: 500 V AC/0 V DC Rated current: A Time/current characteristics diagram Melting I t values diagram I L I!! # #! # #!! # # 1 # = I I ' & % I I I! I I 1 % >! # # #! # #!! # #! &! & & # & A BB! Current limitation diagram #! & &! & A BB! # #! # #!! # # Peak short-circuit current with largest DC component % Peak short-circuit current without DC component & # & # & A BB 1 = Type I n P v I t s 1 ms ms A W K A s A s 3NA NA NA NA NA NA NA NA NA NA Type I t a 30 V AC 00 V AC 500 V AC A s A s A s 3NA NA NA NA NA NA NA NA NA NA Siemens /01

55 ? Siemens AG 015 3NA, 3ND LV HRC 3NA33..- series Size: 3 Operational class: gg Rated voltage: 90 V AC 1 /0 V DC Rated current: A Time/current characteristics diagram Melting I t values diagram LV HRC fuse links I L I! # #! # #! # # 1 % # = I I ' & % I I I! I I 1 % # = # # #! # #! # #! &! & & # & A BB! Current limitation diagram # &! & A BB # #! # #! # # & # 1 % #! = Type I n P v I t s 1 ms ms A W K A s A s 3NA NA NA NA NA NA Type I t a 30 V AC 00 V AC 90 V AC A s A s A s 3NA NA NA NA NA NA Manufacturer's confirmation of the rated voltage 90 V +% available on request. # & & A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component Siemens /01 53

56 ? Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links 3NA3 series Size: (IEC design Operational class: gg Rated voltage: 500 V AC/0 V DC Rated current: A Time/current characteristics diagram Melting I t values diagram I L I! # &! 1 % # ' = I I ' & I I I! I I 1 % # # > % # &! # &! & & # & A BB! Current limitation diagram # &! & A BB # &! & # 1 % # # = Type I n P v I t s 1 ms ms A W K A s A s 3NA NA NA NA Type I t a 30 V AC 00 V AC 500 V AC A s A s A s 3NA NA NA NA ! & # & Peak short-circuit current with largest DC component % Peak short-circuit current without DC component & A BB 5 Siemens /01

57 ? Siemens AG 015 3NA, 3ND LV HRC 3NA3 series Size: a Operational class: gg Rated voltage: 500 V AC/0 V DC Rated current: A Time/current characteristics diagram Melting I t values diagram LV HRC fuse links I L I! # &! # 1 ' = I I ' & I I I! I I 1 %! > % # &! # # &! & & # & A BB! Current limitation diagram # &! & A BB # &! # & # 1 # % = Type I n P v I t s 1 ms ms A W K A s A s 3NA NA NA NA NA Type I t a 30 V AC 00 V AC 500 V AC A s A s A s 3NA NA NA NA NA ! & # & Peak short-circuit current with largest DC component % Peak short-circuit current without DC component & A BB Siemens /01 55

58 ? Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links 3NA38, 3NA8, 3NA78 series Size: 000, 00 Operational class: gg Rated voltage: 500 V AC/50 V DC Rated current:... A Time/current characteristics diagram Melting I t values diagram I L I! #!! # #! & # 1 ' % > I I # # 1 & >! I I I &! #! #! #! I I! & & &! A BB & &! & & # A BB Table, see page 57 Current limitation diagram # &! #! #! # 1 # =! &! & # & A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component 5 Siemens /01

59 Siemens AG 015 3NA, 3ND LV HRC 3NA38, 3NA8, 3NA78 series Size: 000, 00 Operational class: gg Rated voltage: 500 V AC/50 V DC Rated current:... A LV HRC fuse links Type I n P v I t s I t a 1 ms ms 30 V AC 00 V AC 500 V AC A W K A s A s A s A s A s 3NA380, 3NA80, 3NA NA380, 3NA80, 3NA NA3801, 3NA801, 3NA NA3803, 3NA803, 3NA NA3805, 3NA805, 3NA NA3807, 3NA807, 3NA NA38, 3NA8, 3NA NA381, 3NA81, 3NA NA381, 3NA381-7, 3NA81, 3NA NA3817, 3NA817, 3NA NA380, 3NA380-7, 3NA80, 3NA NA38, 3NA38-7, 3NA8, 3NA NA38, 3NA38-7, 3NA8, NA8-7, 3NA78, 3NA78-7 3NA3830, 3NA3830-7, 3NA830, NA830-7, 3NA7830, 3NA NA383, 3NA83, 3NA NA NA383, 3NA83, 3NA NA Siemens /01 57

60 ? Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links 3NA38..-, 3NA8..-, 3NA78..- series Size: 000, 00 Operational class: gg Rated voltage: 90 V AC 1 /50 V DC Rated current:... 0 A Time/current characteristics diagram Melting I t values diagram I L I! #!! # #! & 1 # = I I #! I I I! I I &! #! #! # 1 % >! & & &! A BB & &! & & # A BB 1 Manufacturer's confirmation of the rated voltage 90 V +% available on request. Current limitation diagram &! #! #! # 1 # ' =! &! & # & A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component 58 Siemens /01

61 Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links Type I n P v I t s I t a 1 ms ms 30 V AC 00 V AC 90 V AC A W K A s A s A s A s A s 3NA380-, 3NA80-, 3NA NA380-, 3NA80-, 3NA NA3801-, 3NA801-, 3NA NA3803-, 3NA803-, 3NA NA3805-, 3NA805-, 3NA NA3807-, 3NA807-, 3NA NA38-, 3NA8-, 3NA NA381-, 3NA81-, 3NA NA381-, 3NA81-, 3NA NA3817-, 3NA817-, 3NA NA3817-KJ, 3NA817-KJ, 3NA7817-KJ NA380-, 3NA80-, 3NA NA380-KJ, 3NA80-KJ, 3NA780-KJ NA38-, 3NA8-, 3NA NA38-, 3NA8-, 3NA NA3830-, 3NA830-, 3NA Siemens /01 59

62 ? Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links 3NA1..- series Size: 1 Operational class: gg Rated voltage: 00 V AC Rated current: A Time/current characteristics diagram Melting I t values diagram I L I!! # #! & # # 1 & I I & % I I I! I I 1 # # # &! #! #! &! & & # & A BB! & Current limitation diagram # &! & A BB!! # & & & A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component # # &! #! # 1 ' Type I n P v A W K 3NA NA NA NA NA NA NA NA NA NA NA Type I t s I t a 1 ms ms 30 V AC 00 V AC A s A s A s A s 3NA NA NA NA NA NA NA NA NA NA NA Siemens /01

63 ? Siemens AG 015 3NA, 3ND LV HRC 3NA..- series Size: Operational class: gg Rated voltage: 00 V AC Rated current: A Time/current characteristics diagram Melting I t values diagram LV HRC fuse links I L I! #! & # #! #! # # 1 I I & % I I I! I I 1! #! # #! # # # &! #! &! & & # & A BB! & Current limitation diagram # &! & A BB!! # & & & A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component! # #!! # # # &! # 1 Type I n P v A W K 3NA NA NA NA NA NA NA NA NA NA NA NA NA Type I t s I t a 1 ms ms 30 V AC 00 V AC A s A s A s A s 3NA NA NA NA NA NA NA NA NA NA NA NA NA Siemens /01 1

64 ? Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links 3NA8..-/-KK series Size: 000, 00 Operational class: gg Rated voltage: 00 V AC Rated current:... A Time/current characteristics diagram Melting I t values diagram I L I! #!! # #! & # 1 # I I % I I I! I I 1 % # #! &! #! #! # & &! & & # A BB! Current limitation diagram! & & &! A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component # &! #! #! # &! & # & A BB 1 Type I n P v I t s 1 ms ms A W K A s A s 3NA NA NA NA NA NA NA NA NA NA8-, 3NA8-KK NA830-, 3NA830-KK NA NA Type I t a 30 V AC 00 V AC A s A s 3NA NA NA NA NA NA NA NA NA NA8-, 3NA8-KK NA830-, 3NA830-KK NA NA Siemens /01

65 ? Siemens AG 015 3NA, 3ND LV HRC 3ND18 series Size: 000, 00 Operational class: am Rated voltage: 500 V AC Rated current:... A Time/current characteristics diagram Melting I t values diagram LV HRC fuse links I L I! #!! # #! & # 1 = I I % I I I! I 1 % > #! # &! #! #! #! & &! A BB & & &! & & # A BB Current limitation diagram! # &! #! #! # 1 # = Type I n P v I t s 1 ms ms A W K A s A s 3ND ND ND ND ND ND ND ND ND ND ND ND1830, 3ND ND ND &! & # & A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component Type I t a 30 V AC 00 V AC 500 V AC A s A s A s 3ND ND ND ND ND ND ND ND ND ND ND ND1830, 3ND ND ND Siemens /01 3

66 ? Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links 3ND13.., 3ND series Size: 1,, 3 Operational class: am Rated voltage: 90 V AC Rated current: A Time/current characteristics diagram Melting I t values diagram I L I!! & # #! #! # # #! 1! > I I ' & I I I 1 >! I % I #! #! # #! # # # &!! Current limitation diagram &! & A BB & #! &! & & # & A BB Table, see page 5 #! #! # #! # # # &! 1 =! & # & & A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component Siemens /01

67 Siemens AG 015 3NA, 3ND LV HRC 3ND13.., 3ND series Size: 1,, 3 Operational class: am Rated voltage: 90 V AC Rated current: A LV HRC fuse links Type I n P v I t s I t a 1 ms ms 30 V AC 00 V AC 90 V AC A W K A s A s A s A s A s 3ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Siemens /01 5

68 Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links Dimensional drawings LV HRC fuse links, operational class gg Size I n U n Type Dimensions A V b h 1 h t 1 t Sizes 000 to 3 and a AC/50 DC 3NA t 1 t... AC 500 3NA38../ AC/50 DC 3NA AC 00 3NA AC/50 DC 3NA AC/50 DC 3NA78.. h1 h AC/50 DC 3NA AC/50 DC 3NA AC/50 DC 3NA AC/50 DC 3NA8../ AC 00 3NA8..- (KK b AC/50 DC 3NA AC/50 DC 3NA78../-7 I01_899a AC/50 DC 3NA78..- Size (IEC design AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC 00 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC 00 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC 00 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA I01_ AC/0 DC 3NA AC/0 DC 3NA AC 00 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA , AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA AC/0 DC 3NA3.. See adjacent drawing a AC/0 DC 3NA Siemens /01

69 Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse links LV HRC fuse links, operational class am Size I n U n Type Dimensions Sizes 000 to 3 A V b h 1 h t 1 t t t AC 500 3ND AC 90 3ND h1 h AC 90 3ND AC 90 3ND , 30 3ND I01_899a b Siemens /01 7

70 Siemens AG 015 3NA, 3ND LV HRC LV HRC signal detectors Overview LV HRC signal detectors are used for remotely indicating that the LV HRC fuse links have been tripped. Three different solutions are available: 3NX1 signal detectors with signal detector link The LV HRC signal detectors with signal detector link support monitoring of LV HRC fuse links with non-insulated grip lugs of sizes 000 to at A or more. The signal detector link is connected in parallel to the fuse link. In the event of a fault, the LV HRC fuse links are released simultaneously with the LV HRC fuse detector link. A trip pin switches a floating microswitch Dimensional drawings LV HRC signal detectors 3NX signal detector top The signal detector top can be used with LV HRC fuse links, sizes 000, 00, 1 and, which are equipped with non-insulated grip lugs and have a front indicator or combination alarm. It is simply plugged into the grip lugs 5TT3170 fuse monitors If a fuse is tripped, the front indicator springs open and switches a floating microswitch. This solution should not be used for safety-relevant systems. For this purpose, we recommend our electronic fuse monitors Signal detector links I01_0785a I01_07857a 7 3NX1 Signal detector tops 3,5 I01_115 3NX, 3NX3 Fuse monitors 5,5 L1 L L ,5 15 L1 L L3 3 I01_ ,5 3NX 5TT3170 Circuit diagrams Graphic symbols LV HRC signal detectors Signal detector tops 1 N NO NC 3NX1 3NX Fuse monitors L1 L L3 1 L1' L' L3' 13 5TT Siemens /01

71 Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse bases and accessories Overview Terminals for all applications Flat terminals with screws are suitable for connecting busbars or cable lugs. They have a torsion-proof screw connection with shim, spring washer and nut. When tightening the nut, always ensure compliance with the specified torque due to the considerable leverage effect. The double busbar terminal differs from the flat terminal in that it supports connection of two busbars, one on the top and one at the bottom of the flat terminal. The modern box terminal ensures efficient and reliable connection to the conductors. They support connection of conductors with or without end sleeves. With the flat terminal with nut, terminal lug of the nut is torsionproof. When tightening the nut, the torque must be observed because of the considerable leverage effect. Up to three conductors can be clamped to the terminal strip. The plug-in terminal is equipped for connecting two conductors. One conductor can be clamped to the saddle-type terminal. Siemens /01 9

72 Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse bases and accessories Technical specifications LV HRC fuse bases, LV HRC bus-mounting bases Size 000/ Standards IEC 09-1, -; EN 09-1; DIN VDE 03-, UL 8-1 (only downstream from the branch protection Approvals KEMA, UL File No: E1717-IZLT Rated current I n A Rated voltage U n V AC V DC Rated short-circuit strength ka AC ka DC 5 Max. power dissipation of fuse links W Flat terminal Screw M8 M M1 Nut M8 -- Max. tightening torque Nm Plug-in terminal Conductor cross-section mm Saddle-type terminal Conductor cross-section mm Box terminals Conductor cross-section mm Terminal strips Conductor cross-section, 3-wire mm Max. torque for attachment of LV HRC fuse base Nm Extended rated voltage up to 00 V (except LV HRC bus-mounting bases. LV HRC fuse bases with swivel mechanism Size 000/ a Rated voltage U n V AC 90 V DC 0 Max. power dissipation of fuse links W Flat terminal Screw M8 M M1 M1 Nut M8 -- Max. tightening torque Nm Siemens /01

73 Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse bases and accessories Dimensional drawings LV HRC fuse bases made of molded plastic Size 000/00, 1P h 1 h 3 h øl h h 5 h 3NX03 partition,5 b 1 t 1 b t t 3 t 3NH3051 to 3NH3053 I01_157 Size I n Poles Connections Type b 1 b h 1 h h 3 h h 5 h l t 1 t t 3 t A 000/00 1P M8 flat terminal, screw 3NH LV HRC fuse bases made of ceramic Size 000/00 1P Saddle-type terminal 3NH Box terminals 3NH P h 1 h 3 h øl h h 5 h 3NX03 partition h 1 h 3 h øl h h 5 h b 1 b t 1 t t3 t I01_159 b 1 b 3 b t 1 t t3 t I_158 3NH303., 3NH3050 3NH03. Size I n Poles Connections Type b 1 b b 3 h 1 h h 3 h h 5 h l t 1 t t 3 t A 000/00 1P Flat terminal, screw 3NH M8 plug-in terminal 3NH Saddle-type terminal 3NH Flat terminal, terminal strip 3NH Flat terminal, nut 3NH Flat and saddle-type 3NH terminals 3P Flat terminal 3NH M8 plug-in terminal 3NH Saddle-type terminal 3NH Flat terminal, terminal strip 3NH Siemens /01 71

74 Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse bases and accessories Size 0, 1P h 1 h 3 h øl h h 5 h 3NX030 partition 3NH31. b 1 b t 1 t t3 t I01_1550 Size I n Poles Connections Type b 1 b h 1 h h 3 h h 5 h l t 1 t t 3 t A 0 1P Flat terminal 3NH Plug-in terminal 3NH Size 1 1P 3P h 1 h 3 h øl b 3 h h 5 h 3NX0 partition h 1 h 3 h b 3 øl h h 5 h b 1 b t 1 t t3 t I01_1551 b 1 b t 1 t t3 t I_155 3NH3.0 3NH30 Size I n Poles Connections Type b 1 b b 3 h 1 h h 3 h h 5 h l t 1 t t 3 t A P M flat terminal 3NH Double busbar terminal 3NH P M flat terminal 3NH Siemens /01

75 Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse bases and accessories Size 1P Size 3 1P h 1 h 3 h øl b 3 h h 5 h 3NX05 partition h 1 h 3 h øl b 3 h h 5 = h 3NX0 partition b 1 b t 1 t t3 t I01_1553 b 1 b t 1 t t 3 t I01_155 3NH33.0 3NH3.0 Size I n Poles Connections Type b 1 b b 3 h 1 h h 3 h h 5 h l t 1 t t 3 t A 00 1P M flat terminal 3NH Double busbar terminal 3NH P M1 flat terminal 3NH Double busbar terminal 3NH Size, 1P h øl h 1 h 3 b 3 h h 5 b 1 b t 1 t t3 I_1555 3NH3530 Size I n Poles Connections Type b 1 b b 3 h 1 h h 3 h h 5 l t 1 t t 3 A P M1 flat terminal 3NH a Can only be used in bases with swivel mechanism 1 Size LV HRC fuse links are also screwed onto the base. Siemens /01 73

76 3NA, 3ND LV HRC LV HRC fuse bases and accessories LV HRC fuse bases with swivel mechanism Sizes 000/00, 1, 3 and a e c d b I01_11357b f f l Siemens AG 015 m Drilling plan for sizes 000/00 1 and 3 a Ø7 Ø,5 Ø f a n o 3NH703., 3NH73., 3NH733., 3NH750 Size I n Type a b c d e f l m n o A 000/00 3NH7030, NH7031, 3NH NH730, NH731, 3NH NH7330, NH7331, 3NH733 a 150 3NH LV HRC contact covers for LV HRC fuse bases and LV HRC bus-mounting bases 1 Sizes 000/00 to 3 b e c 3NX3115 LV HRC protective covers, with 3NX311 LV HRC covers Size 000/00, degree of protection IPX a d I01_1135a 11 3NX35 to 3NX38, 3NX311 Size Type a b c d e 000/00 3NX NX NX NX NX The 3NX35 LV HRC contact covers can be used for both LV HRC fuse bases and LV HRC bus-mounting bases. I01_113 LV HRC contact covers for LV HRC bus-mounting bases 11,5 I01_ NX3113 for the incoming terminal, dimensional drawing 3NX35 for the outgoing terminal, see dimensional drawing above 7 Siemens /01

77 Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse bases and accessories LV HRC partitions for LV HRC fuse bases Size 000/00 1,5 I01_09a Spacer 31 3,5 Barrier 138,5 3,5 1,1, 8 3NX03 Sizes 0 to 3 1, I01_093a Spacer 35 1,3 55,8 b 1,3 Partition c a d 3NX030, 3NX0 to 3NX0 Size Type a b c d 0 3NX NX NX NX LV HRC partitions for LV HRC bus-mounting bases Size 000/00 I01_050b I01_099a I01_08a 81,5 Phase barrier End barrier For LV HRC bus-mounting bases in tandem design 3NX07 3NX08 3NX031 Siemens /01 75

78 3NA, 3ND LV HRC LV HRC fuse bases and accessories Fuse pullers Sizes 000 to Sleeve 7,5 13 7, I01_0503a 350 9,5 3NX13 (without sleeve, 3NX1 (with sleeve Isolating blades with insulated grip lugs Sizes 000/00 to 3 g a e d h b I_ f Siemens AG 015 Size Type a b c d e f g h 000/00 3NG NG NG NG NG ,5 c 3NG1.0 Isolating blades with non-insulated grip lugs Size Size a I_0511a ,5 I_085a 3NG NG Siemens /01

79 Siemens AG 015 3NA, 3ND LV HRC LV HRC fuse bases and accessories More information Space requirements when installing LV HRC fuse bases 1 LV HRC fuse base, 3P 3 LV HRC fuse bases, 1P LV HRC partition I_1131 I_113 I01_1133a Spacer h Partition t Size Mounting width (mm of LV HRC fuse bases Mounting height (mm 1 unit, 3P 3 units, 1P Distance through spacer Bases with phase barrier, without end barrier Bases with phase barrier and end barriers Bases with phase barrier, without end barrier 1 This measurement specifies the required overall mounting depth with base d and the overall mounting height h. Placing an additional base on the barrier and plug-on part does not increase the distance, rather the bases lie flat directly on top of one another. Bases with phase barrier and end barriers 3 If the bases are installed directly on a side wall in the distribution board, one spacer part can be broken off. This would reduce the distance measurement. Mounting depth (mm 3NX0.. partitions with matching bases 1 h t 000/ Installation without barriers; for mounting, see page 75 Not available a Can only be used in bases with swivel mechanism Not available SITOR semiconductor fuses for 3NH bases: 3NH bases are generally suitable for all LV HRC type fuses. SITOR semiconductor fuses in LV HRC design can also be used, although it must be noted that, compared to cable and line protection fuses, these get much hotter during operation. The following table contains the permissible load currents of the SITOR semiconductor fuses for installation in 3NH. For installation in a base, it may therefore be necessary to operate the fuse under I n (derating. The values were determined using the conductor cross-sections specified in the table. If using smaller cross-sections, a considerably higher derating is required due to the lower heat dissipation. For further information on the assignment of SITOR semiconductor fuses to the fuse bases and safety switching devices, please refer to the tables on page 8 ff. Siemens /01 77

80 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design Overview SITOR semiconductor fuses protect power semiconductors from the effects of short circuits because the super quick-response disconnect characteristic is far quicker than with conventional LV HRC fuses. They protect high-quality devices and system components, such as converters with fuses in the input and the DC link, UPS systems and soft starters for motors. Panel mounting requirements have given rise to various connection versions and designs. The fuses with blade contacts comply with IEC 09- and are suitable for installation in LV HRC fuse bases, in LV HRC fuse switch disconnectors and switch disconnectors with fuses. They also include fuses with slotted blade contacts for screw fixing with 1 mm mounting dimension, whose sizes are according to IEC 09-. Fuses with slotted blade contacts for screw fixing with 80 mm or 1 mm mounting dimension are often screwed directly onto busbars for optimum heat dissipation. Even better heat transmission is provided by the compact fuses with M or M1 female thread, which are also mounted directly onto busbars. Bolt-on links with 80 mm mounting dimension are another panelmounting version for direct busbar mounting. The fuses for SITOR thyristor sets, railway rectifiers or electrolysis systems were developed specially for these applications. LV HRC bases suitable for use with SITOR semiconductor fuses and safety switching devices can be found on page 9 ff. Fuse characteristics, configuration notes and the assignments of SITOR semiconductor fuses to the fuse bases and 3NP and 3KL safety switching devices can be found in the Configuration Manual at: The new size 3 type ranges have a round ceramic body instead of a square one. These series are characterized by small I²t values with low power dissipation and high capability under alternating loads. The dimensions and functional values correspond to the current standards IEC 09-/ EN 09- (VDE 03-. Benefits SITOR semiconductor fuses have a high varying load factor, which ensures a high level of operational safety and plant availability - even when subject to constant load change The use of SITOR semiconductor fuses in LV HRC bases or Siemens switch disconnectors has been tested with regard to heat dissipation and maximum current loading. This makes planning and dimensioning easier and prevents consequential damage Our high standard of quality ensures good compliance with the characteristic curve and accuracy. This ensures long-term protection of devices Operational classes Fuses are categorized according to function and operational classes. SITOR semiconductor fuses, in LV HRC design, are available in the following operational classes: ar: for the short-circuit protection of power semiconductors (partial range protection gr: for the protection of power semiconductors (full range protection gs: The operational class gs combines cable and line protection with semiconductor protection (full range protection Parallel-connected fuses Parallel-connected fuses offer maximum current and energy limiting that is clearly better than in the case of comparable single fuses. They also fulfill the special requirements for UL-certified fuses according to which fuses must be connected in parallel at the factory. Here is the original wording of the NEC document: 0.8 Fuses and circuit breakers shall be permitted to be connected in parallel where they are factory assembled in parallel and listed as a unit. Individual fuses, circuit breakers, or combinations thereof shall not otherwise be connected in parallel. Note: The ordering data of the fuses are listed in ascending order of the rated voltage in the selection tables. 78 Siemens /01

81 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design Application Properties SITOR fuse links protect converter equipment against short circuits. The power semiconductors used in these devices (diodes, thyristors, GTOs and others require fast-switching elements for protection due to their low thermal capacity. SITOR fuse links (super quick-response fuse links for semiconductor protection are ideal for this type of application. The following types of short-circuit faults can occur: Internal short circuit: A faulty semiconductor device causes a short circuit within the power converter External short circuit: A fault in the load causes a short circuit on the output side of the power converter Inverter shoot-through: In the event of a failure of the chassis converter control system during inverter operation (commutation failure, the converter connection forms a short-circuit type connection between the DC and AC power supply system Fuse links can be arranged in a number of ways within the converter connection. A distinction is made between phase fuses in three-phase incoming feeders and, if applicable, DC fuses and branch fuses in the branches of the converter circuit (see adjacent diagrams. In the case of center tap connections, fuse links can only be arranged as phase fuses in three-phase incoming feeders. When using SITOR fuse links of operational class ar, the overload protection of converter equipment, up to approx. 3.5 times the rated current of the fuse link, is taken from conventional protective devices (for example, thermally-delayed overload relays or, in the case of controlled power converters, from the current limiter (exception: full range fuses. SITOR fuse links of the 3NE series with operational class gs are also suitable for the overload and short-circuit protection of cables, lines and busbars. All other dual-function fuses of the SITOR series have a gr characteristic. Overload protection is ensured as long as the rated current of the SITOR fuse links of the series 3NE is selected as I n I z (DIN VDE 00 Part 30. The rules of DIN VDE 00 Part 30 must be applied when rating short-circuit protection for cables, lines and busbars. Configuration options I_893 Six-pulse bridge circuit B with phase fuses I_895 Six-pulse bridge circuit B with phase fuses and DC fuse (connection for converter ( ( Six-pulse bridge circuit B with branch fuses (reversible connection I_89 ( ( Six-pulse bridge circuit B with phase fuses and DC fuse (reversible connection I_89 Six-pulse bridge circuit B with branch fuses I_897 Three-phase bidirectional circuit W3 with phase fuses with branch fuses I_898 Siemens /01 79

82 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design Technical specifications MLFB Operational class (IEC Siemens /01 Rated voltage U n V AC / V DC Rated breaking capacity I 1n ka Rated current I n Melting I t value I t s (t vs = 1 ms 1 A A s A s Breaking I t value I t a at U n Temperature rise at I n body center K Power dissipation at I n 3NB13-3KK0 gr --/ NB11-KK11 ar --/ NB118-KK11 ar --/ NB131-KK11 ar --/ NB13-KK11 ar --/ NB1337-KK11 ar --/ NB135-KK11 ar --/ NB35-KK1 ar --/ NB350-KK1 ar --/ NB355-KK1 ar --/ NB357-KK1 ar --/ NB3-KK17 ar --/ NB3-KK17 ar --/ NB3350-1KK gr 90/ NB3351-1KK gr 90/ NB335-1KK gr 90/ NB335-1KK gr 90/ NB3355-1KK gr 90/ NB3357-1KK gr 90/ NB3358-1KK gr 90/ NB3358-1KK7 gr 90/ NB33-1KK7 gr 90/ NC3-0C gr 500/ NC3-3C gr 500/ NC5-0C gr 500/ NC5-3C gr 500/ NC7-0C gr 500/ NC7-3C gr 500/ NC8-0C gr 500/ NC8-3C gr 500/ NC31-0C gr 500/ NC31-3C gr 500/ NC3-0C ar 500/ NC3-3C ar 500/ NC33-1 ar 90/ NC33- ar 90/ NC337-1 ar 90/ NC337- ar 90/ NC338-1 ar 90/ NC338- ar 90/ NC30-1 ar 90/ NC30- ar 90/ NC31-1 ar 90/ NC31- ar 90/ NC3-1 ar 90/ NC3- ar 90/ NC33-1 ar 90/ NC33- ar 90/ NC3-1 ar 500/ NC3- ar 500/ NC35-1 ar 500/ NC35- ar 500/ NC333-1U ar 00/ NC333-U ar 00/ NC3337-1U ar 00/ NC3337-U ar 00/ NC3338-1U ar 00/ NC3338-U ar 00/ NC330-1U ar 00/ NC330-U ar 00/ NC331-1U ar 00/ NC331-U ar 00/ NC33-1U ar 800/ NC33-U ar 800/ NC333-1U ar 800/ NC333-U ar 800/ NC330-1U ar 150/ NC330-U ar 150/ Footnotes, see page 83. W Varying load factor VL

83 Siemens AG 015 MLFB Operational class (IEC 09 Rated voltage U n Rated breaking capacity I 1n Rated current I n 1 Melting I t value I t s (t vs = 1 ms Breaking I t value I t a at U n SITOR Semiconductor Fuses Temperature rise at I n body center Power dissipation at I n LV HRC design V AC / V DC ka A A s A s K W 3NC33-1U ar 150/ NC33-U ar 150/ NC33-1U ar 150/ NC33-U ar 150/ NC33-1U ar 150/ NC33-U ar 150/ NC338-1U ar 10/ NC338-U ar 10/ NC5531 ar 800/ NC5838 ar 00/ NC580 ar 00/ NC581 ar 800/ NC737- ar 80/ NC7331- ar 80/ NC83-0C gr 90/ NC83-3C gr 90/ NC85-0C gr 90/ NC85-3C gr 90/ NC87-0C gr 90/ NC87-3C gr 90/ NC831-0C gr 90/ NC831-3C gr 90/ NC83-0C gr 90/ NC83-3C gr 90/ NC8-3C ar 00/ NE0- gr 90/ NE1-0 gs 90/ NE1- gr 90/ NE-0 gs 90/ NE- gr 90/ NE1-0 gs 90/ NE1- gr 90/ NE1-3 gr 90/ NE15-0 gs 90/ NE15- gr 90/ NE15-3 gr 90/ NE17-0 gs 90/ NE17- gr 90/ NE17-3 gr 90/ NE130-0 gs 90/ NE130- gr 90/ NE130-3 gr 90/ NE gs 90/ NE1331- gr 90/ NE gr 90/ NE133-0 gs 90/ NE133- gr 90/ NE133-3 gr 90/ NE gs 90/ NE1333- gr 90/ NE gr 90/ NE133-0 gs 90/ NE133- gr 90/ NE133-3 gr 90/ NE135-0 gs 90/ NE135- gr 90/ NE13-3 gr 90/ NE13-0 gs 90/ NE13- gr 90/ NE13-3 gr 90/ NE137-0 gs 90/ NE137-1 gr 00/ NE137- gr 90/ NE137-3 gr 90/ Footnotes, see page 83. Varying load factor VL Siemens /01 81

84 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design MLFB Operational class (IEC 09 Rated voltage U n Rated breaking capacity I 1n Rated current I n 1 Melting I t value I t s (t vs = 1 ms Breaking I t value I t a at U n Temperature rise at I n body center Power dissipation at I n V AC / V DC ka A A s A s K W 3NE138-0 gs 90/ NE138-1 gr 00/ NE138- gr 90/ NE138-3 gr 90/ NE17- gr 90/ NE17-3 gr 90/ NE18- gr 90/ NE18-3 gr 90/ NE180-0 gs 90/ NE gs 90/ NE gs 90/ NE181-0 gs 90/ NE gs 90/ NE gs 90/ NE gs 90/ NE180-0 gs 90/ NE31 ar 00/ NE3 ar 00/ NE3 ar 00/ NE35 ar 00/ NE37 ar 00/ NE330-0B ar 00/ NE331 ar 00/ NE33-0B ar 00/ NE333 ar 00/ NE333-0B ar 00/ NE3333 ar 00/ NE333-0B ar 00/ NE3335 ar 00/ NE333 ar 00/ NE ar 900/ NE ar 800/ NE330-8 ar 90/ NE31-0C ar 00/ NE330-0C ar 00/ NE33-0C ar 00/ NE33-0C ar 00/ NE355-5 ar 00/ NE ar 00/ NE3-0C ar 00/ NE335-0C ar 00/ NE335- ar 00/ NE33-0C ar 00/ NE337-0C ar 00/ NE337-1C 8 ar 00/ NE1 gr 00/ NE gr 00/ NE117 gr 00/ NE117-5 gr 00/ NE118 ar 00/ NE ar 00/ NE11 ar 00/ NE11-5 ar 00/ NE1 ar 00/ NE1 ar 00/ NE1-5 ar 800/ NE37-0B ar 800/ NE37-B ar 800/ NE330-0B ar 800/ NE330-B ar 800/ NE333-0B ar 800/ NE333-B ar 800/ NE33-0B ar 800/ NE33-B ar 800/ NE337 ar 800/ NE337- ar 800/ Footnotes, see page 83. Varying load factor VL 8 Siemens /01

85 Siemens AG 015 MLFB SITOR Semiconductor Fuses LV HRC design V AC / V DC ka A A s A s K W 3NE5-0C ar 1500/ NE5-0C ar 1500/ NE530-0C ar 1500/ NE531-0C ar 1500/ NE533-0C ar 1500/ NE533-1C 11 ar 1500/ NE57-0C ar 1500/ NE533-0C ar 1500/ NE53-0C ar 1500/ NE37 ar 900/ NE37-7 ar 900/ NE ar 900/ NE75-0C ar 000/ NE77-0C ar 000/ NE731-0C ar 000/ NE73-0C ar 000/ NE733-0C ar 000/ NE733-1C 11 ar 000/ NE73-0C ar 000/ NE73-1C 11 ar 000/ NE737-1C 11 ar 000/ NE78-1C 11 ar 000/ NE gr 90/ NE gr 90/ NE gr 90/ NE gr 90/ NE800-1 ar 90/ NE801-1 ar 90/ NE80-1 ar 90/ NE80-1 ar 90/ NE gr 90/ NE870-1 gr 90/ NE871-1 gr 90/ NE gr 90/ NE gr 90/ NE ar 90/ NE870-1 ar 90/ NE871-1 ar 90/ NE87-1 ar 90/ NE87-1 ar 90/ NE875-1 ar 90/ NE877-1 ar 90/ NE ar 90/ NE90- gr 00/ NE950 ar 00/ NE950-7 ar 00/ NE93-1C 11 ar 500/ NE93-1C 11 ar 500/ NE93-1C 11 ar 500/ Maximum tightening torque: M capped thread: 35 Nm, screw penetration depth 9 mm. Temperature rise and power dissipation for operation in LV HRC fuse base. 3 Cooling air speed 1 m/s. In the case of natural air cooling, reduction of 5 %. Maximum tightening torque: - M thread (with indicator: 0 Nm - M capped thread: 50 Nm, screw penetration depth 9 mm - M 1.5 thread: 0 Nm 5 Temperature of water-cooled busbar max. +5 C. Maximum tightening torque: M capped thread: 35 Nm, screw penetration depth 9 mm. 7 Cooling air speed 0.5 m/s. In the case of natural air cooling, reduction of 5 %. 8 Gauge mm, M1 screw connection. 9 Cooling air speed m/s. Bottom (cooled connection max. +0 C, top connection (M max. +1 C. 11 M1 screw connection. 1 Rated voltage according to UL. 13 DC rated voltage: see page 158, Use with direct current Operational class (IEC 09 Rated voltage U n Minimum 50 ka, higher values on request. Rated breaking capacity I 1n Rated current I n I t if U VSI is 1500 V, if U n is 150 V, k is = For 3NB13-3KK0 I t if U VSI is 0 V, if U n is 900 V, I t is A s. 1 Melting I t value I t s (t vs = 1 ms Breaking I t value I t a at U n Temperature rise at I n body center Power dissipation at I n Varying load factor VL Siemens /01 83

86 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design Load rating of SITOR fuse links with 3NH LV HRC fuse bases Use in switch disconnectors and fuse bases When using SITOR semiconductor fuses in 3KL and 3KM switch disconnectors with fuses and with 3NP fuse switch disconnectors and 3NH LV HRC fuse bases, the rated current of the fuse must sometimes be reduced due to the higher power loss compared to LV HRC fuses for line protection. Sometimes when using SITOR semiconductor fuses, the currents designated can be higher than the rated currents of the switches and fuse bases. These higher currents only apply when using SITOR semiconductor fuses and cannot be used when using devices with standard LV HRC fuses. You will find further details in the following selection tables. When using SITOR semiconductor fuses of the 3NC, 3NC8, 3NE33 and 3NE3 series, the standard switching capacity of the fuse must not be used as the blades of these fuses (in contrast to LV HRC fuses are slit. Occasional switching of currents up to the rated current of the fuses is permissible. The use of SITOR semiconductor fuses > 3 A for overload protection is not permitted - even if gr fuses are used (exception: 3NE1. The operational voltage is limited by the rated voltage of the switch disconnector or the fuse. If switching without load, the limit value is the rated insulation voltage of the switch disconnector. The 3NE1 double protection fuses can be used as full range fuses (gs both for semiconductor and line protection. For further information on the assignment of SITOR semiconductor fuses to the fuse bases and safety switching devices, please refer to the tables on pages 8 ff. SITOR fuse links Ø min Cu 3NH LV HRC fuse bases Article No. I n U n Operational Size VL Article No. BG I max I VL A V AC class mm A 3NC3-0C/3C gr NH330/ NC5-0C/3C gr NC7-0C/3C gr NC8-0C/3C gr NC31-0C/3C gr NC3-0C/3C ar NC333-1U ar x (0 x 5 3NH330/ NC3337-1U 7 00 ar x (50 x NC3338-1U ar x (0 x NC330-1U ar x (0 x NC331-1U ar x (50 x NC33-1U ar x (50 x NC333-1U ar x (50 x NC330-1U ar x 95 3NH330/ NC33-1U ar x NC33-1U ar x NC33-1U ar x (0 x NC338-1U ar x (0 x NC83-0C/-3C gr NH330/ NC85-0C/-3C gr NC87-0C/-3C gr NC831-0C/-3C gr NC83-0C/-3C gr x NC8-3C ar x (0 x NE gr NH3030/ NE gs NE gr NE gs NE gr NE gs NH330/30 1 3NE1-/-3 90 gr NE gs NE15-/ gr NE gs NE17-/ gr NE gs x 70 3NH3330/ NE130-/ gr x NE gs 1.0 x 95 3NH3330/ NE1331-/ gr 1.0 x NE gs 1.0 x NE133-/ gr 1.0 x NE gs 1.0 x 3NH330/ NE1333-/ gr 1.0 x NE gs 1.0 x NE133-/ gr 1.0 x NE gs x NE135-/ gr x Siemens /01

87 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design SITOR fuse links Ø min Cu 3NH LV HRC fuse bases Article No. I n U n Operational Size VL Article No. BG I max I VL A V AC class mm A 3NE gs x NE13-/ gr x NE gs x (0 x NE gr x (0 x NE137-/ gr x (0 x NE gs x (50 x 5 3NH330/ NE gr x (50 x NE138-/ gr x (50 x NE17-/ gr x (0 x NE18-/ gr x (0 x NE gs NH3030/ NE gs NE gs NE gs NE gs NE gs NE gs NE gs NE ar NH330/ NE ar NE3 00 ar NE ar NE ar NE330-0B ar NH3330/ NE ar NH3330/ NE33-0B ar NE ar x NE333-0B ar NH330/ NE ar 1.0 x NE333-0B ar 1.0 x NE ar 1.0 x NE ar 1.0 x NE ar 1.0 x (0 x NE ar 0.95 x NE ar 0.95 x (0 x NE gr NH3/30 0/ NE 0 00 gr / NE gr / NE ar / NE ar / NE ar / NE ar / NE1 00 ar /1 1 3NE37-0B ar NH3330/ NE330-0B ar NE333-0B ar 0.85 x (30 x 5 3NH330/ NE33-0B ar 0.85 x (30 x NE ar 0.95 x (50 x NE gr NH3030/ NE gr NE gr NE gr NE ar NE ar NH3030/ NE ar NE ar U n = Rated voltage BG = Size I n = Rated current VL = Varying load factor Ø min Cu = Required conductor cross-section Cu I max = Maximum permissible current I VL = Maximum permissible current with varying load Siemens /01 85

88 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design Load rating of SITOR fuse links with 3NP LV HRC fuse switch disconnectors SITOR fuse links Ø min Cu 3NP LV HRC fuse switch disconnectors Add-on units Article No. I n U n BG VL Article No. BG I max I VL Article No. BG I max I VL Article No. BG I max I VL Article No. A V AC mm A A A A 3NC3-0C/ NP NP70 3 3NP NC3-3C 3NC5-0C/ NC5-3C 3NC7-0C/ NC7-3C 3NC8-0C/ NC8-3C 3NC31-0C/ NC31-3C 3NC3-0C/ NC3-3C 3NC333-1U x (0 x 5 3NP NP NP NC3337-1U x (50 x NC3338-1U x (0 x NC330-1U x (0 x NC331-1U x (50 x NC33-1U x (50 x NC333-1U x (50 x NC330-1U x 95 3NP NP NP NC33-1U x NC33-1U x NC33-1U x (0 x NC338-1U x (0 x NC83-0C/ NP NP70 3 3NP NC83-3C 3NC85-0C/ NC85-3C 3NC87-0C/ NC87-3C 3NC831-0C 3NC831/-3C NC83-0C/ x NC83-3C 3NC8-3C x (0 x NE NP NP NP NE NE NE NE BG I max 3NE NP5/ 1 3NP53/3 3NP NP1153 3NE1-/ NE NE15-/ / 00/ NE NE17-/ / 50/ NE x 70 3NP53/ NP NE130-/ x NE x 95 3NP53/ NP5/ NP NP NE1331-/ x NE x NE133-/ x NE x 3NP5/ NP NE1333-/ x 3NP NP NE x 3NP5/ NE133-/ x 3NP NP NE x 150 3NP5/ NP NE135-/ x 150 3NP NP NE x NE13-/ x NE x (0 x NE x (0 x NE137-/ x (0 x NE x (50 x 5 3NP NP NE x (50 x NE138-/ x (50 x NE17-/ x (0 x NE18-/ x (0 x I VL 8 Siemens /01

89 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design SITOR fuse links Ø min Cu 3NP LV HRC fuse switch disconnectors Article No. I n U n BG VL Article No. Add-on units A V AC mm A A A A 3NE NP35/ NP50/ NP NP NP0 3NP070 3NE NE NE NE NE NE NE NE NP5/ NP53/ NP NP NE NP NE NE NE NE330-0B NP NP NE NE33-0B NE x NE333-0B NP NP NP NP NE x NE333-0B x NE x NE x NE x (0 x NE x NE x (0 x NE NP NP NP NE NE NE NE NE NE NE NE37-0B NP53/5 /3 / 05/ 3NP NP NP NE330-0B /3 70/ 55/ NE333-0B x (30 x 5 /3 00/ 0 BG I max I VL Article No / 380 BG I max I VL Article No. BG I max I VL Article No. BG I max NE33-0B x (30 x 5 3NP NE x (50 x NE NP50/ NP NP070 3NE NE NE NE NE NP50/ NP NP070 3NE NE U n = Rated voltage BG = Size I n = Rated current VL = Varying load factor Ø min Cu = Required conductor cross-section Cu I max = Maximum permissible current I VL = Maximum permissible current with varying load I VL Siemens /01 87

90 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design SITOR fuse links Ø min Cu 3NP LV HRC fuse switch disconnectors Busbar devices Article No. I n U n BG VL Article No. BG I max I VL Article No. BG I max I VL Article No. BG I max I VL Article No. A V AC mm A A A A 3NC3-0C/ NP7 3 3NP NC3-3C 3NC5-0C/ NC5-3C 3NC7-0C/ NC7-3C 3NC8-0C/ NC8-3C 3NC31-0C 3NC31-/3C NC3-0C/ NC3-3C 3NC333-1U x (0 x 5 3NP NC3337-1U x (50 x NC3338-1U x (0 x NC330-1U x (0 x NC331-1U x (50 x NC33-1U x (50 x NC333-1U x (50 x NC330-1U x95 3NP NP NC33-1U x NC33-1U x NC33-1U x (0 x NC338-1U x (0 x NC83-0C/ NP7 3 3NP NC83-3C 3NC85-0C/ NC85-3C 3NC87-0C/ NC87-3C 3NC831-0C/ NC831-3C 3NC83-0C/ x NC83-3C 3NC8-3C x (0 x NE NP NP NE NE NE NE BG I max 3NE NP7 1 3NP37 3NP NP1153 3NE1-/ NE NE15-/ NE NE17-/ NE x NE130-/ x NE x 95 3NP NP NP NP NE1331-/ x NE x NE133-/ x NE x NE1333-/ x NE x NE133-/ x NE x 150 3NP NP NE135-/ x NE x NE13-/ x NE x (0 x NE x (0 x NE137-/ x (0 x NE x (50 x 5 3NP NP NE x (50 x NE138-/ x (50 x NE17-/ x (0 x NE18-/ x (0 x I VL 88 Siemens /01

91 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design SITOR fuse links Ø min Cu 3NP LV HRC fuse switch disconnectors Article No. I n U n BG VL Article No. Busbar devices BG I max I VL Article No. BG I max I VL Article No. BG I max I VL Article No. BG I max A V AC mm A A A A 3NE NP015/ NP075/ NP NP NE NP NP NE NE NE NE NE NE NE NP NP NP NP NE NE NE NE NE330-0B NE NE33-0B NE x NE333-0B NP NP NE x NE333-0B x NE x NE x NE x (0 x NE x NE x (0 x NE NP NP NE NE NE NE NE NE NE NE37-0B NP NP NE330-0B NE333-0B x (30 x NE33-0B x (30 x NE x (50 x NE NP075/ NP NP07 3NE NE NE NE NE NP075/ NP NE NP NE80s U n = Rated voltage BG = Size I n = Rated current VL = Varying load factor Ø min Cu = Required conductor cross-section Cu I max = Maximum permissible current I VL = Maximum permissible current with varying load I VL Siemens /01 89

92 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design Load rating of SITOR fuse links with 3KL/3KM LV HRC fuse switch disconnectors SITOR fuse links Ø min Cu 3KL/3KM switch disconnectors with fuses 3KL... add-on devices 3KM... busbar devices Article No. I n U n BG VL Article BG I max I VL Article BG I max I VL Article BG I max I VL Article BG I max I VL A V AC mm No. A No. A No. A No. A 3NC3-0C/ KL KL NC3-3C 3NC5-0C/ NC5-3C 3NC7-0C/ NC7-3C 3NC8-0C/ NC8-3C 3NC31-0C/ NC31-3C 3NC3-0C/ NC33C 3NC333-1U x (0 x 5 3KL KL NC3337-1U x (50 x NC3338-1U x (0 x NC330-1U x (0 x NC331-1U x (50 x NC33-1U x (50 x NC333-1U x (50 x NC330-1U x 95 3KL KL NC33-1U x NC33-1U x NC33-1U x (0 x NC338-1U x (0 x 8 3KL NC83-0C/ KL KL NC83-3C 3NC85-0C/ NC85-3C 3NC87-0C/ NC87-3C 3NC831-0C/ NC831-3C 3NC83-0C/ x NC83-3C 3NC8-3C x (0 x 3KL KL NE KL KL KM NE KM NE NE NE NE KL55 1 3KL57 3KM55 1 3KM NE1-/ KM57 3NE NE15-/ NE NE17-/ NE x 70 3KL KM NE130-/ x NE x 95 3KL KL KM NE1331-/ x NE x NE133-/ x NE x 3KL KL NE1333-/ x NE x NE133-/ x NE x 150 3KL KL NE135-/ x NE x NE13-/ x NE x (0 x NE x (0 x NE137-/ x (0 x NE x (50 x 5 3KL KL NE x (50 x NE138-/ x (50 x NE17-/ x (0 x NE18-/ x (0 x Siemens /01

93 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design SITOR fuse links Ø min Cu 3KL/3KM switch disconnectors with fuses 3KL... add-on devices 3KM... busbar devices Article No. I n U n BG VL Article BG I max I VL Article BG I max I VL Article BG I max I VL Article BG I max I VL A V AC mm No. A No. A No. A No. A 3NE KL KL KM NE KM NE NE NE NE NE NE KL KM NE KL KL KM NE KM NE NE NE NE330-0B NE NE33-0B NE x NE333-0B KL KL KM KM NE x NE333-0B x NE x NE x NE x (0 x NE x NE x (0 x NE KL KM NE NE NE NE NE NE NE NE37-0B KL KL KM NE330-0B NE333-0B x (30 x NE33-0B x (30x5 3KL KL NE x (50 x NE KL KL KM NE KM NE NE NE KL KL KM NE KL KL KM KM NE NE U n = Rated voltage BG = Size I n = Rated current VL = Varying load factor Ø min Cu = Required conductor cross-section Cu I max = Maximum permissible current I VL = Maximum permissible current with varying load Siemens /01 91

94 SITOR Semiconductor Fuses LV HRC design Dimensional drawings ,5 71, ,5 18 Ø75 59, I01_13719a 17, 11,5 18 Ø75 59, , I01_1371a 17, 19 f Siemens AG 015 3NC..-0C, 3NC8..-0C 3NC..-3C, 3NC8..-3C 8, , I01_ c 1,51,5,5 b 73,5 a 0, 8,1 I01_0717 3NE13.-0, 3NE NE NE1..-3, 3NE , 8,1 70 d f g e Type Dimensions (mm a b c d e f g 3NE NE Siemens /01

95 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 15 I01_ I01_071 I01_1133 8, ,5 0 50,3,3 0 0,5 35,8 53,3 53,8 79,9 1 9,, 8 35, NE NE NE.-0, 3NE.-, 3NE , ,5 3, I_0715,5 5 7, NE1..-0, 3NE1..- 3NE133.-0, 3NE NE I01_ ,5 73 0, 8, I01_17 Siemens /01 93

96 SITOR Semiconductor Fuses LV HRC design 3, 18 Ø75 Ø30 0,7 d b c a Ø75 I01_1370, ,5 19 b a f Siemens AG 015 I01_139 M1 3NC3..-1, 3NC33..-1U 3NC3..-, 3NC33..-U Type Dimensions (mm Type Dimensions (mm a b c d a b 3NC NC NC33..-1U NC33..-U ,5 11,5 1,5 1,5 73,5,5 11,5 8, ,51,5 73,5 a I01_050,5 11,5 1,5 1, ,5 0 d f g e c b I01_ NE3..-0B, 3NE337 3NE1.. 3NE3., 3NE33., 3NE33.. Type Dimensions (mm a b c d e f g 3NE NE NE Siemens /01

97 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design , 18 Ø75 Ø ,7 a 91,5 19 b Ø75 a 18 Ø75 I01_137a 9 59, 17, 19 d b c a 1 13 b a I01_139 M1 I01_1370, ,5 19 3NE3...-0C, 3NE3..-1C 3NC3..-1U 3NC3..-U Type Dimensions (mm Type Dimensions (mm Type Dimensions (mm a b a b c d a b 3NE3...-0C NC3..-1U NC3..-U NE3..-1C Ø8 M I01_1130a ,5 9 3NE335- Siemens /01 95

98 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design , NB335.-1KK 3NB3358-1KK7 3NB33-1KK7 Type I n U n Operational class Type I n U n Operational class A V AC Characteristic A V AC Characteristic 3NB3350-1KK gr 3NB3358-1KK gr 3NB3351-1KK gr 3NB33-1KK gr 3NB335-1KK gr 3NB335-1KK gr 3NB3355-1KK 0 90 gr 3NB3357-1KK 0 90 gr 3NB3358-1KK gr 9 Siemens /01

99 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design ,5 19, , c d b a e a 13 e 18 Ø75 I_ , 17, a 18 Ø75 I01_137a , 17, Ø75 I01_1375a , 17, 19 3NE5..-0C 3NE5..-0C, 3NE5..-1C; 3NE7...-0C, 3NE7...-1C 3NE9..-1C Type Dimensions (mm Type Dimensions (mm a b c d e a 3NE5..-0C NE5..-0C NE5..-1C 13 3NE7...-0C NE7...-1C 13 Siemens /01 97

100 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 13,5 13, I01_ ,5 0, I01_ ,5 0,5 0, 13, 9, Ø75 I01_ , ,1,7 9,5 17, 3 59, 9, NB11-KK11 3NB118-KK11 3NB131-KK11 3NB13-KK11 3NB1337-KK11 3NB135-KK11 Type I n U n Operational class Type I n U n Operational class Type I n U n Operational class A V DC Characteristic A V DC Characteristic A V DC Characteristic 3NB11-KK ar 3NB131-KK ar 3NB1337-KK ar 3NB118-KK ar 3NB13-KK ar 3NB135-KK ar 98 Siemens /01

101 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design Ø ,5 I01_ Ø ,75 9, , 15 5, ,5 13 I01_1913 3NB3-KK17, 3NB3-KK17 3NB35-KK1, 3NB350-KK1, 3NB355-KK1, 3NB357-KK1 Type I n U n Operational class Type I n U n Operational class A V DC Characteristic A V DC Characteristic 3NB3-KK ar 3NB35-KK ar 3NB3-KK ar 3NB350-KK ar 3NB355-KK ar 3NB357-KK ar Siemens /01 99

102 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design I01_1139a Ø50 M M Ø8 Ø50 0,3 9 91,5 SW1 11 I_11370a Ø73 M Ø0 M M SW1 b a c I01_1137a Ø11 Ø M 75, ,5 I_11371a Ø8 70 M 70 b 81,5 a 3NC5531 3NC58.. 3NE..-7, 3NE NE.., 3NE9.. Type Dimensions (mm a b c 3NC NC NC Type Dimensions (mm a b 3NE NE NE NE 99 8 Ø0 M, Ø0 M , ,5 73 I01_11373a 0 I01_11375a I01_1137a ,5 57 I01_1137a 119,5, NE NE NE3..-B, 3NE337-3NC Siemens /01

103 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design Characteristic curves 3NC.. series Size: 3 Operational class: gr or ar Rated voltage: 500 V AC Rated current: A Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz [s] vs Virtual pre-arcing time 3 I01_809 [A] c Let-through current 5 Unlimited peak values: DC component 50 % DC component 0 % 00 A 350 A 300 A 50 A 00 A 150 A I01_ A 300 A 00 A 150 A 50 A 350 A Prospective short-circuit current p [A] Prospective short-circuit current p [A] 8 Correction factor k A for breaking I t value Peak arc voltage Correction factor A ,8 0. 0, 0. 0, I01_8 [V] s Peak arc voltage Û I01_ , Recovery voltage Uw [V] Recovery voltage Uw [V] Siemens /01 1

104 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NB33 series.. Size: x 3, 3 x 3 Operational class: gr Rated voltage: 90 V AC Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time 3 00 A 10 A 150 A 1350 A 0 A 0 A 1700 A I01_19138 [s] vs Virtual pre-arcing time A 1900 A I01_ Prospective short-circuit current p [A] 3NB33..-1KK Prospective short-circuit current p [A] 3NB33..-1KK7 Let-through characteristics (current limitation at 50 Hz Peak current c [A] A 0 A 0 A 1350 A 150 A 10 A 00 A I01_19a Peak current c [A] A 1700 A I01_1911a Prospective short-circuit current p [A] 3NB33..-1KK 3 3 3NB33..-1KK Prospective short-circuit current p [A] Siemens /01

105 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design Correction factor k A for breaking I t value Correction factor for breaking t value [A s] 1,0 0,9 0,8 0,7 0, 0,5 0, 0,3 0, 0, Recovery voltage U w [V] 3NB33..-1KK. I01_191 Peak arc voltage [V] Ûs Peak arc voltage NB33..-1KK Recovery voltage U w [V] I01_1913 Siemens /01 3

106 t Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NC3 series Size: 3 Operational class: ar Rated voltage: 90 V AC ( A, 500 V AC ( A Rated current: A Time/current characteristics diagram [s] vs Virtual melting time Permissible overload Melting 0 A 0 A 150 A 10 A 00 A 900 A 800 A 7 A 30 A Prospective short-circuit current p [A] I01_130 Let-through characteristic curves [A] c I Let-through current 5 0 A 0 A 150 A 10 A 00 A 900 A 800 A 7 A 30 A Prospective short-circuit current Ip [A] I01_1305a Correction factor k A for breaking I t value Correction factor for breaking t value [A s] 1 0,8 0, 0, 0, = 500 V U n = 90 V U n Recovery voltage Uw [V] I01_1303 Peak arc voltage 0 Peak arc voltage Û s [V] Recovery voltage U w [V] I01_130 Siemens /01

107 Siemens AG 015 SITOR Semiconductor Fuses 3NC33 series Size: 3 Operational class: ar Rated voltage: 00 V AC ( A, 800 V AC ( A Rated current: A Time/current characteristics diagram Let-through characteristic curves LV HRC design [s] vs Virtual melting time 3 1 Permissible overload I01_191 [A] c Let-through current A 10 A 00 A 900 A 800 A 7 A 30 A I01_ Melting Prospective short-circuit current p [A] A 7 A 800 A 900 A 00 A 10 A 150 A Prospective short-circuit current p [A] Correction factor k A for breaking I t value Correction factor for breaking t -value [A s] 1 0,8 0, 0, 0, = 800 V U n = 00 V U n Recovery voltage Uw [V] I01_1307 Peak arc voltage 00 Peak arc voltage Û s [V] Recovery voltage U w [V] I01_1308 Siemens /01 5

108 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NC3 series Size: 3 Operational class: ar Rated voltage: 150 V AC ( A, 10 V AC (800 A Rated current: A Time/current characteristics diagram Let-through characteristic curves [s] vs Virtual melting time 3 1 Permissible overload I01_19091 [A] c I Let-through current A 30 A 500 A 00 A 315 A I01_ Melting Unlimited peak values: DC component 50 % DC component 0 % Prospective short-circuit current Ip [A] A 00 A 500 A 30 A 800 A Prospective short-circuit current p [A] Correction factor k A for breaking I t value Peak arc voltage Correction factor for breaking t value [A s] A 315 A A Recovery voltage Uw [V] I01_17059 Peak arc voltage Û s [V] Recovery voltage U w [V] I01_1700 Siemens /01

109 Siemens AG 015 3NC5531, 3NC58.. series Operational class: ar Rated voltage: 800 V AC (350 A, 30 A, 00 V AC (00 A, 800 A Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 00 A 30 A 800 A I01_113 SITOR Semiconductor Fuses LV HRC design Let-through characteristics (current limitation at 50 Hz [A] c Let-through current 5 Unlimited peak values: DC component 50 % DC component 0 % 800 A 30 A 00 A 350 A Prospective short-circuit current p [A] I01_ Prospective short-circuit current p [A] 8 5 Correction factor k A for breaking I t value A Correction factor A 350 A 00 A 800 A Recovery voltage U w [V] I01_113 Peak arc voltage [V] s Û Peak arc voltage A 800 A 350 A 30 A Recovery voltage U w [V] I01_1135 Siemens /01 7

110 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NC73..- series Operational class: ar Rated voltage: 80 V AC Rated current: 50 A, 350 A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 50 A I01_119 Let-through characteristics (current limitation at 50 Hz [A] c Let-through current 5 Unlimited peak values: DC component 50 % DC component 0 % 350 A 50 A Prospective short-circuit current p [A] I01_ Prospective short-circuit current p [A] 8 5 Correction factor k A for breaking I t value 1 A Correction factor Recovery voltage U w [V] I01_1151 Peak arc voltage [V] s Û Peak arc voltage Recovery voltage U w [V] I01_115 8 Siemens /01

111 Siemens AG 015 3NC8.. series Size: 3 Operational class: gr or ar Rated voltage: 0 V AC Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time 3 1 I01_81 SITOR Semiconductor Fuses LV HRC design Let-through characteristics (current limitation at 50 Hz [A] c Let-through current 5 Unlimited peak values: DC component 50 % DC component 0 % 00 A 500 A 350 A 50 A 00 A 150 A I01_8a A 500 A 350 A 50 A 00 A 150 A Prospective short-circuit current p [A] Prospective short-circuit current p [A] Correction factor k A for breaking I t value Peak arc voltage A Correction factor A A I01_8 Peak arc voltage Û s [V] A A I01_ Recovery voltage U w [V] Recovery voltage Uw [V] Siemens /01 9

112 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE.-0, 3NE1..-0 series Size: 00, 1 Operational class: gs Rated voltage: 90 V AC Rated current: A Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz [s] vs Virtual pre-arcing time A 50 A 00 A A 15 A 0 A I01_89 [A] c Let-through current 5 Unlimited peak values: DC component 50 % DC component 0 % 315 A 50 A 00 A 15/ A 0 A I01_ Prospective short-circuit current p [A] Prospective short-circuit current p [A] Correction factor k A for breaking I t value Peak arc voltage A Correction factor NE NE I01_830 s [V] Peak arc voltage Û I01_ Recovery voltage Uw [V] Recovery voltage U w [V] 1 Siemens /01

113 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE.-, 3NE1..-, 3NE1..-3, 3NE13..-, 3NE series Size: 00, 1, Operational class: gr Rated voltage: 90 V AC Rated current: A Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz t VS [s] Virtual pre-arcing time A 0 A 15 A A 00 A 50 A 315 A 350 A 00 A 50 A 500 A I01_839a A C Peak let-through current A 50 A 00 A 350 A 315 A 50 A 00 A A 15 A 0 A 80 A Prospective short-circuit current p A I01_8a -3 3 Prospective short-circuit current p A 5 Correction factor k A for breaking I t value Peak arc voltage Correction factor 1 0,8 0, 0, 350 A A A A 80 A - 15 A I01_80 Peak arc voltage A A A I01_81 0, Recovery voltage Recovery voltage 800 Siemens /01 111

114 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE133.-0, 3NE13.-0 series Size:, 3 Operational class: gs Rated voltage: 90 V AC Rated current: A Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz [V] s Û Peak arc voltage A A I01_83 [A] c Let-through current 5 Unlimited peak values: DC component 50 % DC component 0 % 800 A 7 A 30 A 50 A 500 A 50 A 00 A 350 A I01_ Recovery voltage U w [V] Prospective short-circuit current p [A] Correction factor k A for breaking I t value Peak arc voltage A Correction factor I01_833 s [V] Peak arc voltage Û I01_ Recovery voltage Uw [V] Recovery voltage U w [V] 11 Siemens /01

115 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE1..-, 3NE1..-3 series Size: 3 Operational class: gr Rated voltage: 90 V AC Rated current: A Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz t VS [s] Virtual pre-arcing time 3 I01 83 C Peak let-through current A 800 A 7 A 70 A 30 A 50 A I01_ A 30 A 70 A 7 A 800 A 850 A Prospective short-circuit current p Prospective short-circuit current p 5 Correction factor k A for breaking I t value Peak arc voltage Correction factor I01_8 Peak arc voltage I01_ Recovery voltage Recovery voltage 800 Siemens /01 113

116 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE137-1, 3NE138-1 series Size: 3 Operational class: gr Rated voltage: 00 V AC Rated current: 7 and 800 A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 7 A Prospective short-circuit current p [A] I01_835 Let-through characteristics (current limitation at 50 Hz [A] c Let-through current 5 Unlimited peak values: DC component 50 % DC component 0 % 800 A 7 A Prospective short-circuit current p [A] I01_838 Correction factor k A for breaking I t value Peak arc voltage A Correction factor 1 0,8 0, 0, I01_83 [V] s Peak arc voltage Û I01_837 0, Recovery voltage U w [V] Recovery voltage Uw[V] 11 Siemens /01

117 Siemens AG 015 SITOR Semiconductor Fuses 3NE series Size: 000 Operational class: gs Rated voltage: 90 V AC Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 3 A 50 A 0 A 35 A 5 A 0 A 1 A Prospective short-circuit current p [A] I01_85 LV HRC design Let-through characteristics (current limitation at 50 Hz [A] c Let-through current Unlimited peak values: DC component 50 % DC component 0 % 80 A 3 A 50 A 0 A 35 A 5 A 0 A 1 A Prospective short-circuit current p [A] I01_88a Correction factor k A for breaking I t value Peak arc voltage A Correction factor 1 0,8 0, 0, I01_8 s [V] Peak arc voltage Û I01_87 0, Recovery voltage w [V] Recovery voltage U w [V] Siemens /01 115

118 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE3. series Size: 1 Operational class: ar Rated voltage: 00 V AC Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 00 A A 15 A 0 A Prospective short-circuit current [A] p I01_859 8 Let-through characteristics (current limitation at 50 Hz [A] c Let-through current Unlimited peak values: DC component 50 % DC component 0 % 50 A 00 A A 15 A 0 A 8 8 Prospective short-circuit current p [A] 5 I01_8 Correction factor k A for breaking I t value 1 A Correction factor 0,8 0, 0, 0, Recovery voltage U w [V] I01_80 Peak arc voltage 500 [V] Û s Peak arc voltage Recovery voltage U w [V] I01_81 11 Siemens /01

119 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE33. series Size: 1 Operational class: ar Rated voltage: 00 V AC Rated current: A Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz [s] vs Virtual pre-arcing time 3 I01_83a [A] c Let-through current 5 Unlimited peak values: DC component 50 % DC component 0 % 50 A 00 A 350 A 315 A I01_ A 00 A 350 A 315 A Prospective short-circuit current p [A] Prospective short-circuit current p [A] Correction factor k A for breaking I t value 1 A Correction factor 0,8 0, 0, 0, Recovery voltage U w [V] I01_80 Peak arc voltage 500 [V] Û s Peak arc voltage Recovery voltage U w [V] I01_81 Siemens /01 117

120 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE33.. series Size: Operational class: ar Rated voltage: 00 V AC (up to 30 A 900 V AC (7 A 800 V AC (800 A 90 V AC (900 A Rated current: A Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz [s] vs Virtual pre-arcing time 3 I01_85 [A] c Let-through current 5 Unlimited peak values: DC component 50 % DC component 0 % 900 A 800 A 7 A 30 A 50 A 500 A 50 A 00 A I01_ A 800 A 7 A 30 A 50 A 500 A 50 A 00 A Prospective short-circuit current [A] p Prospective short-circuit current p[a] 8 5 Correction factor k A for breaking I t value Peak arc voltage A Correction factor A 7 A 800 A 900 A I01_8 [V] Û s Peak arc voltage I01_ Recovery voltage U w [V] Recovery voltage U w [V] 118 Siemens /01

121 Siemens AG 015 3NE3.., 3NE3.. series Size: 3 Operational class: ar Rated voltage: 00 V AC Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 30 A 500 A 50 A 00 A 315 A A 0 A Prospective short-circuit current p [A] I01_ SITOR Semiconductor Fuses LV HRC design Let-through characteristics (current limitation at 50 Hz c [A] Let-through current 3 Unlimited peak values: DC component 50 % DC component 0 % 7 A 30 A 500 A 50 A 00 A 315 A A 0 A Prospective short-circuit current [A] p I01_871 Correction factor k A for breaking I t value A Correction factor 1 0,8 0, 0, 0, Recovery voltage I01_ Uw [V] Peak arc voltage [V] s Peak arc voltage Û Recovery voltage Uw [V] I01_870 Siemens /01 119

122 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE35.5-5, 3NE1..-5 series Operational class: ar, gr Rated voltage: 800 V AC (170 A 00 V AC (50 A, 0 A, 00 A, 50 A Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 50 A 0 A 00 A 50 A Prospective short-circuit current [A] p I01_111 8 Let-through characteristics (current limitation at 50 Hz [A] c Let-through current Unlimited peak values: DC component 50 % DC component 0 % 50 A 170 A 00 A 0 A 50 A 8 8 Prospective short-circuit current p [A] 5 I01_11 Correction factor k A for breaking I t value 1 A Correction factor 0,8 170 A 0, 50/0 A 00/50 A 0, 0, Recovery voltage Uw [V] I01_113 Peak arc voltage [V] s Û Peak arc voltage A 00 A Recovery voltage Uw [V] I01_11 Siemens /01

123 Siemens AG 015 3NE1.. series Size: 0 Operational class: gr or ar Rated voltage: 00 V AC Rated current: 3... A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 15 A 0 A 80 A 3 A 50 A 0 A 3 A Prospective short-circuit current p[a] I01_855 8 SITOR Semiconductor Fuses LV HRC design Let-through characteristics (current limitation at 50 Hz [A] c Let-through current Unlimited peak values: DC component 50 % DC component 0 % A 15 A 0 A 80 A 3 A 50 A 0 A 3 A 8 8 Prospective short-circuit current p [A] 5 I01_858 Correction factor k A for breaking I t value 1 A Correction factor 0,8 0, 0, 0, Recovery voltage U w [V] I01_85 Peak arc voltage 500 [V] Û s Peak arc voltage Recovery voltage Uw [V] I01_857 Siemens /01 11

124 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE3..-0B, 3NE337 series Size: Operational class: ar Rated voltage: 800 V AC Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 500 A 50 A 315 A 50 A Prospective short-circuit current p [A] I01_851 Let-through characteristics (current limitation at 50 Hz [A] c Let-through current 5 3 Unlimited peak values: DC component 50 % DC component 0 % 7 A 500 A 50 A 315 A 50 A Prospective short-circuit current p [A] I01_85 Correction factor k A for breaking I t value Peak arc voltage A Correction factor 1 0,8 0, 0, 50 A 315 A I01_85 [V] s Peak arc voltage Û I01_853 0, Recovery voltage Uw [V] Recovery voltage U w [V] 00 1 Siemens /01

125 Siemens AG 015 3NE3..-B, 3NE337- series Operational class: R Rated voltage: 800 V AC Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 500 A 50 A 315 A 50 A Prospective short-circuit current [A] p I01_ SITOR Semiconductor Fuses LV HRC design Let-through characteristics (current limitation at 50 Hz [A] c Let-through current 5 Unlimited peak values: DC component 50 % DC component 0 % 7 A 500 A 50 A 315 A 50 A Prospective short-circuit current p [A] I01_11 Correction factor k A for breaking I t value 1 A Correction factor 0,8 50 A 0, 315 A 0, 0, Recovery voltage Uw [V] I01_117 Peak arc voltage [V] s Û Peak arc voltage Recovery voltage U [V] w I01_118 Siemens /01 13

126 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE5.. series Size: 3 Operational class: ar Rated voltage: 1500 V AC Rated current: A Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz [s] vs Virtual pre-arcing time 3 1 I01_87 Let-through current c [A] Unlimited peak values: DC component 50 % DC component 0 % 50 A 350 A 315 A A A I01_ A 350 A 315 A A A Prospective short-circuit current [A] p Prospective short-circuit current [A] p 8 5 Correction factor k A for breaking I t value Peak arc voltage A Correction factor ,8 0. 0, 0. 0, I01_873 [V] s Peak arc voltage Û I01_ , Recovery voltage U w [V] Recovery voltage Uw [V] 1 Siemens /01

127 Siemens AG 015 3NE5.. series Size: 3 Operational class: ar Rated voltage: 1500 V AC Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 50 A 00 A Prospective short-circuit current p[a] I01_ SITOR Semiconductor Fuses LV HRC design Let-through characteristics (current limitation at 50 Hz c [A] Let-through current 3 Unlimited peak values: DC component 50 % DC component 0 % 00 A 50 A 50 A Prospective short-circuit current [A] p I01_877 Correction factor k A for breaking I t value 1 A Correction factor 0.8 0,8 0. 0, 0. 0, 0. 0, Recovery voltage U w I01_ [V] Peak arc voltage [V] s Peak arc voltage Û Recovery voltage Uw [V] I01_87 Siemens /01 15

128 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE.., 3NE9.. series Operational class: Rated voltage: Rated current: ar, gr 00 V AC (850 A, 150 A, 900 V AC (7 A, 900 A A Time/current characteristics diagrams [s] vs Virtual pre-arcing time A 850 A I01_113 [s] vs Virtual pre-arcing time A 150 A I01_ Prospective short-circuit current p [A] Prospective short-circuit current [A] p Siemens /01

129 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design Series 3NB1.., 3NB.. Size: Operational class: Rated voltage: Rated current: 1L, L, 3L, x L, x 3L, 3 x 3L ar 150 V DC A Time/current characteristics diagram [s] vs 1 I01_19150 [s] vs 1 I01_19151 Virtual pre-arcing time A 500 A 00 A 315 A 50 A 00 A Virtual pre-arcing time A 0 A 0 A 0 A 00 A 800 A Prospective short-circuit current p [A] 3NB1...-KK Prospective short-circuit current p [A] 3NB...-KK1. Let-through characteristics (current limitation at 50 Hz Peak current c [A] A 500 A 00 A 315 A 50 A 00 A I01_1918a Peak current c [A] 5 00 A 0 A 0 A 0 A 00 A 800 A I01_1919a Prospective short-circuit current p [A] 3NB1...-KK Prospective short-circuit current p [A] 3NB...-KK1. Siemens /01 17

130 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design Correction factor k A for breaking I t value Correction factor for breaking t value [A s] 1,0 0,9 0,8 0,7 0, 0,5 0, 0,3 0, 0,1 0, Recovery voltage U w [V] 3NB1...-KK11 3NB...-KK1. I01_1915 Peak arc voltage [V] Ûs Peak arc voltage NB1...-KK11 3NB...-KK Recovery voltage U w [V] I01_ Siemens /01

131 Siemens AG 015 3NE.., 3NE9.. series Operational class: ar, gr Rated voltage: 00 V AC (850 A, 150 A, 900 V AC (7 A, 900 A Rated current: A Let-through characteristics (current limitation at 50 Hz [A] c Let-through current 5 850/900/ 150 A 7 A I01_1138 SITOR Semiconductor Fuses LV HRC design Unlimited peak values: DC component 50 % DC component 0 % Prospective short-circuit current p [A] Correction factor k A for breaking I t value A Correction factor 1 0,8 0, 0, 0, 800 A 150 A 7 A 900 A Recovery voltage U [V] w I01_1139 Peak arc voltage [V] Peak arc voltage Ûs A 150 A 7 A 900 A Recovery voltage Uw [V] I01_1 Siemens /01 19

132 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE7.., 3NE7.. series Size: 3 Operational class: ar Rated voltage: 000 V AC Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 30 A 55 A 50 A 00 A 350 A 50 A 00 A Prospective short-circuit current [A] p I01_ Let-through characteristics (current limitation at 50 Hz [A] c Let-through current 5 3 Unlimited peak values: DC component 50 % DC component 0 % 7 A 30 A 55 A 00/50 A 350 A 50 A 00 A Prospective short-circuit current [A] p I01_881 Correction factor k A for breaking I t value 1 A Correction factor 0,8 0, 0, 0, Recovery voltage U [V] w I01_879 Peak arc voltage [V] s Peak arc voltage Û Recovery voltage Uw [V] I01_ Siemens /01

133 Siemens AG 015 SITOR Semiconductor Fuses 3NE series Size: 00 Operational class: gr or ar Rated voltage: 90 V AC Rated current: 5... A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 15 A 0 A 80 A 3 A 50 A 35 A 5 A Prospective short-circuit current p [A] I01_87 LV HRC design Let-through characteristics (current limitation at 50 Hz [A] c Let-through current Unlimited peak values: DC component 50 % DC component 0 % A 15 A 0 A 80 A 3 A 50 A 35 A 5 A 8 8 Prospective short-circuit current p [A] 5 I01_850 Correction factor k A for breaking I t value 1 A Correction factor 0,8 0, 0, 0, Recovery voltage Uw [V] I01_88 Peak arc voltage [V] s Û Peak arc voltage Recovery voltage U w[v] I01_89 Siemens /01 131

134 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE870.-1, 3NE series Size: 000 Operational class: gr or ar Rated voltage: 90 V AC/700 V DC Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 5 A 3 A 0 A 50 A 3 A I01_813 Let-through characteristics (current limitation at 50 Hz [A] c Let-through current Unlimited peak values: DC component 50 % DC component 0 % 3 A 50 A 0 A 3 A 5 A 0 A Prospective short-circuit current p [A] I01_ Prospective short-circuit current p [A] Correction factor k A for breaking I t value Peak arc voltage A Correction factor I01_81 Peak arc voltage Û s [V] I01_ Recovery voltage U w [V] Recovery voltage U w [V] 13 Siemens /01

135 Siemens AG 015 SITOR Semiconductor Fuses 3NE87.-1, 3NE series Size: 000 Operational class: ar Rated voltage: 90 V AC/700 V DC according to UL Rated current: A Time/current characteristics diagram [s] vs Virtual pre-arcing time A 50 A 00 A A 15 A 0 A 80 A I01_817 LV HRC design Let-through characteristics (current limitation at 50 Hz c[a] Let-through current 5 3 Unlimited peak values: DC component 50 % DC component 0 % 315 A 50 A 00 A A 15 A 0 A 80 A Prospective short-circuit current p [A] I01_ Prospective short-circuit current p [A] 8 Correction factor k A for breaking I t value Peak arc voltage A Correction factor 1 0,8 0, 0, I01_818 s [V] Peak arc voltage Û I01_819 0, Recovery voltage U w [V] Recovery voltage Uw [V] Siemens /01 133

136 Siemens AG 015 SITOR Semiconductor Fuses LV HRC design 3NE93. series Size: 3 Operational class: ar Rated voltage: 500 V AC Rated current: A Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz [s] vs Virtual pre-arcing time A 500 A 00 A I01_88 [A] c Let-through current 5 3 Unlimited peak values: DC component 50 % DC component 0 % 30 A 500 A 00 A Prospective short-circuit current [A] p I01_ Prospective short-circuit current [A] p 8 5 Correction factor k A for breaking I t value Peak arc voltage A Correction factor [V] s Peak arc voltage U Recovery voltage Uw [V] 800 I01_ Recovery voltage Uw [V] 3000 I01_88 13 Siemens /01

137 Siemens AG 015 Overview SITOR cylindrical fuses protect power semiconductors from the effects of short-circuits because the super quick-response disconnect characteristic is far quicker than that of conventional fuses. They protect high-quality devices and system components such as semiconductor contactors, electronic relays (solid state, converters with fuses in the input and in the DC link, UPS systems and soft starters for motors up to 0 A. The cylindrical design is approved for industrial applications. The cylindrical fuse links comply with IEC 09. Cylindrical fuse holders also comply with IEC 09 and UL 51. The cylindrical fuse holders for x 38 mm and 1 x 51 mm have been tested and approved as fuse switch disconnectors and the cylindrical fuse holders for x 58 mm as fuse disconnectors according to the switching device standard IEC The utilization category and the tested current and voltage values are specified in the Table Technical Specifications. The cylindrical fuse holders have been specially developed for the application of SITOR fuse links with regard to heat tolerance and heat dissipation and are therefore not recommended for standard applications. Cylindrical fuse bases do not offer the same comprehensive touch protection as the fuse holders, but have better heat dissipation. The single-pole cylindrical fuse bases for 1 51 mm and 58 mm allow modular expansion to multi-pole bases. SITOR Semiconductor Fuses Cylindrical fuse design Benefits Cylindrical fuses have an extremely compact design and a correspondingly small footprint The cylindrical fuses have IEC and UL approval and are suitable for universal use worldwide The use of SITOR cylindrical fuses in the cylindrical fuse holders and bases has been tested with regard to heat dissipation and maximum current loading. This makes planning and dimensioning easier and prevents consequential damage The use of fuse holders as switch disconnectors expands the area of application of these devices and increases operating safety Technical specifications Cylindrical fuse holders 3NC 3NC1 3NC Size mm mm Standards UL 8-1; CSA C.; IEC 09-, IEC Approvals UL 8-1; UL File Number E1717; CSA C. No. 39-M Rated voltage U n V AC 90; 00 acc. to UL/CSA Rated current I n A AC acc. to UL/CSA 50 acc. to UL 80 acc. to UL/CSA 0 acc. to CSA Rated conditional short-circuit current ka (0 at 00 V Breaking capacity Utilization category AC-B (00 V AC-B (00 V AC-0B (90 V Max. power dissipation of fuse links (conductor cross-section used W 3 ( mm.3 ( mm 5 ( mm.5 (5 mm 9.5 (35 mm 11 (50 mm Rated impulse withstand voltage kv Overvoltage category II Pollution degree No-voltage changing of fuse links Yes Sealable when installed Yes Mounting position Any Current direction Any Degree of protection acc. to IEC 059 IP0 Terminals with touch protection according to BGV A3 Yes at incoming and outgoing feeder Ambient temperature C 5 Conductor cross-sections Finely stranded, with end sleeve mm AWG (American Wire Gauge AWG /0 Tightening torque Nm Ib.in Siemens /01 135

138 Siemens AG 015 SITOR Semiconductor Fuses Cylindrical fuse design Load rating of SITOR cylindrical fuses Cylinder Operational class (IEC 09 Rated voltage U n Rated voltage U n Rated current I n Melting I t value I t s (t vs = 1 ms Breaking I t value I t a at U n Temperature rise at I n body center Power dissipation at I n V AC V DC A A s A s K W kg 3NC03 ar NC0 ar NC08 ar NC ar NC1 ar NC1 ar NC0 ar NC5 ar NC3 ar NC1 ar NC ar NC3 ar NC ar NC5 ar NC ar NC1 ar NC1-5 ar NC115 ar NC115-5 ar NC ar NC-5 ar NC15 ar NC15-5 ar NC130 ar NC130-5 ar NC13 ar NC13-5 ar NC ar NC-5 ar NC150 ar NC150-5 ar NC00 ar NC00-5 ar NC0 ar NC0-5 ar NC5 ar NC5-5 ar NC3 ar NC3-5 ar NC0 ar NC0-5 ar NC50 ar NC50-5 ar NC3 ar NC3-5 ar NC80 ar NC80-5 ar Load rating of SITOR cylindrical fuses without strikers in fuse holders - can be used as fuse switch disconnectors 1 For SITOR fuse links Rated voltage Rated current Required conductor cross-section Fuse holders - can be used as fuse switch disconnectors 1 Weight approx. 1-pole -pole 3-pole I n Cu Type I max Type I max Type I max V AC/V DC A mm A A A Size 38 mm 3NC03 00/ NC91 3 3NC9/ 3 3NC93/ 3 3NC91 3 3NC91 3NC0 1 3NC NC 1.5 3NC NC NC NC NC3 00/ Footnotes, see next page. 13 Siemens /01

139 Siemens AG 015 For SITOR fuse links Rated voltage Rated current Required conductor cross-section SITOR Semiconductor Fuses Cylindrical fuse design V AC/V DC A mm A A A Size 1 51 mm 3NC NC NC19/ 1 3NC193/ 1 3NC 1 3NC NC191 3NC NC 1 3NC5 90/ NC 1 3NC NC NC NC NC NC NC NC Size 58 mm 3NC0 90/ NC91 0 3NC9/ 0 3NC93/ 0 3NC NC NC91 5 3NC NC NC NC NC NC00 00/ Fuse tongs: 3NC00. The values I max apply for stand-alone operation. If several devices are 1 butt-mounted and/or subject to unfavorable cooling conditions, these values may be reduced still further. With a larger conductor cross-section, Fuse holders acc. to IEC 09-3, UL 51 Fuse switch disconnectors ( 38, 1 51 mm acc. to IEC values higher than I Fuse disconnectors ( 58 mm acc. to IEC max are possible. Load rating of SITOR cylindrical fuses with strikers in fuse holders - can be used as fuse switch disconnectors 1 For SITOR fuse links Fuse holders - can be used as fuse switch disconnectors 1 1-pole -pole 3-pole I n Cu Type I max Type I max Type I max Rated voltage Rated current Required conductor cross-section Fuse holders - can be used as fuse switch disconnectors 1 1-pole -pole 3-pole I n Cu Type I max Type I max Type I max V AC A mm A A A Size 1 51 mm 3NC1-5 90/ NC191 3NC19/ 3NC193/ 3NC NC NC NC NC NC NC NC NC Size 58 mm 3NC0-5 90/ NC91 0 3NC9/ 0 3NC93/ 0 3NC NC NC NC NC NC NC NC NC / Fuse holders acc. to IEC 09-3, UL 51 Fuse switch disconnectors ( 38, 1 51 mm acc. to IEC Fuse disconnectors ( 58 mm acc. to IEC The values I max apply for stand-alone operation. If several devices are butt-mounted and/or subject to unfavorable cooling conditions, these values may be reduced still further. With a larger conductor cross-section, values higher than I max are possible. Siemens /01 137

140 Siemens AG 015 SITOR Semiconductor Fuses Cylindrical fuse design Dimensional drawings Cylindrical fuse links 9,5 38 Ø, 1, NC.. 3NC1.. 3NC.. Cylindrical fuse holders Ø, I01_ ,5 17,7 3NC9. 35, 53,1 85 5,5 9 75,5 I01_ NC , I01_ NC ,5 Cylindrical fuse holders with signaling switch I01_18 8 I01_ NC NC Siemens /01

141 Siemens AG 015 SITOR Semiconductor Fuses Cylindrical fuse bases Cylindrical fuse design 7 1, ,5 3NC38-1 to 3NC ,5 I01_1138a I01_11385a 3NC ,5 1,8 1,5 I01_ NC58-1,,5 Siemens /01 139

142 Siemens AG 015 SITOR Semiconductor Fuses Cylindrical fuse design Characteristic curves 3NC series Size: Operational class: Rated voltage: Rated current: 38 mm ar 00 V AC/700 V DC, A 00 V AC, 3 A A Time/current characteristics diagram t VS [s] Virtual pre-arcing time A A 8 A A 1 A 1 A 0 A 5 A 3 A I01_1153 Let-through characteristics (current limitation at 50 Hz C Peak let-through current A 5 A 0 A 1 A 1 A A 8 A A 3 A 3 5 Prospective short-circuit current p I01_ Prospective short-circuit current p 3 Correction factor k A for breaking I t value 1 Correction factor 0,8 0, 0, 0, I01_1155 Peak arc voltage 0 0 Peak arc voltage I01_ Recovery voltage Recovery voltage 800 Siemens /01

143 Siemens AG 015 3NC1 series Size: 1 51 mm Operational class: ar Rated voltage: 0 V AC (1... A; 90 V AC/800 V DC ( A Rated current: 1... A Time/current characteristics diagram t VS [s] Virtual pre-arcing time A A 3 A A 5 A A A I01_1159 SITOR Semiconductor Fuses Cylindrical fuse design Let-through characteristics (current limitation at 50 Hz Peak let-through current A 5 A 3 5 Prospective short-circuit current I01_ Prospective short-circuit current p 3 Correction factor k A for breaking I t value Peak arc voltage Correction factor 1 0,8 0 V 0, 0, 90 V I01_111 Peak arc voltage I01_11 0, Recovery voltage Recovery voltage 800 Siemens /01 11

144 Siemens AG 015 SITOR Semiconductor Fuses Cylindrical fuse design 3NC1 series Size: Operational class: Rated voltage: Rated current: 1 51 mm ar 0 V AC (1... A; 90 V AC/800 V DC ( A A Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz t VS [s] Virtual pre-arcing time 3 I01_113 C Peak let-through current 3 50 A 0 A 3 A 30 A 5 A 0 A 15 A I01_ A 0 A 5 A 30 A 3 A 0 A 50 A Prospective short-circuit current p Prospective short-circuit current p 3 Correction factor k A for breaking I t value Peak arc voltage A k Correction factor 1 0,8 0, 0, 30 A 3 A I01_115 Peak arc voltage I01_11 0, Recovery voltage Uw Recovery voltage Siemens /01

145 Siemens AG 015 SITOR Semiconductor Fuses Cylindrical fuse design 3NC1..-5 series with striking pin Size: Operational class: Rated voltage: Rated current: 1 51 mm ar 90 V AC/00 V DC A Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz t VS [s] Virtual pre-arcing time 3 1 A 15 A 0 A 5 A 30 A 3 A 0 A 50 A I01_13 C Let-through current 3 50 A 0 A 3 A 30 A 5 A 0 A 15 A A I01_ Prospective short-circuit current p Prospective short-circuit current p 3 Correction factor k A for breaking I t value Peak arc voltage Correction factor 1 0,8 0, 0, I01_131 Peak arc voltage I01_ , Recovery voltage Recovery voltage 800 Siemens /01 13

146 Siemens AG 015 SITOR Semiconductor Fuses Cylindrical fuse design 3NC series Size: Operational class: Rated voltage: Rated current: 58 mm ar 90 V AC/500 V DC ( A; 00 V AC/500 V DC (0 A A Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz t VS [s] Virtual pre-arcing time 3 I01_1170 C Peak let-through current 3 0 A 80 A 3 A 50 A 0 A 3 A 5 A 0 A I01_ A 5 A 3 A 0 A 50 A 3 A 80 A 0 A Prospective short-circuit current p Prospective short-circuit current p Correction factor k A for breaking I t value Peak arc voltage Correction factor 1 0,8 0, 0, 00 V 90 V I01_117 Peak arc voltage I01_ , Recovery voltage Recovery voltage Siemens /01

147 Siemens AG 015 3NC..-5 series with striking pin Size: 58 mm Operational class: ar Rated voltage: 90 V AC/500 V DC ( A; 00 V AC/500 V DC (0 A Rated current: A Time/current characteristics diagram t VS [s] Virtual pre-arcing time A 5 A 3 A 0 A 50 A 3 A 80 A 0 A I01_131 SITOR Semiconductor Fuses Cylindrical fuse design Let-through characteristics (current limitation at 50 Hz C Let-through current 3 0 A 80 A 3 A 50 A 0 A 3 A 5 A 0 A I01_ Prospective short-circuit current p Prospective short-circuit current p Correction factor k A for breaking I t value Peak arc voltage Correction factor 1 0,8 0, 0, 00 V 90 V I01_131 Peak arc voltage I01_ , Recovery voltage Recovery voltage 800 Siemens /01 15

148 Siemens AG 015 SITOR Semiconductor Fuses NEOZED and DIAZED design Overview SILIZED is the brand name for NEOZED fuses (D0 fuses and DIAZED fuses (D fuses with super quick-response characteristic for semiconductor protection. The fuses are used in combination with fuse bases, fuse screw caps and accessory parts of the standard fuse system. SILIZED semiconductor fuses protect power semiconductors from the effects of short circuits because the super quick disconnect characteristic is far quicker than that of conventional fuses. They protect expensive devices and system components, such as semiconductor contactors, static relays, converters with fuses in the input and in the DC link, UPS systems and soft starters for motors up to 0 A. When using fuse bases and fuse screw caps made of molded plastic, always heed the maximum permissible power loss values due to the high power loss (power dissipation of the SILIZED fuses. When using these components, the following maximum permissible power loss applies: NEOZED D0: 5.5 W DIAZED DII:.5 W DIAZED DIII: 7.0 W This enables a partial thermal permanent load of only 50 %. The DIAZED screw adapter DII for 5 A is used for the 30 A fuse link. Benefits SILIZED semiconductor fuses have an extremely compact design. This means they have a very small footprint particularly the NEOZED version The rugged and well-known DIAZED design complies with IEC It is globally renowned and can be used in many countries A wide range of fuse bases and accessories is available for the NEOZED and DIAZED versions of the SILIZED semiconductor fuses. This increases the application options in many devices Technical specifications NEOZED fuse links 5SE13 Standards DIN VDE 03-3; IEC 09-3; EN 09- (VDE 03-; IEC 09- Operational class gr Characteristic Quick-acting Dimensional drawings DIAZED fuse links 5SD Rated voltage U n V AC V DC Rated current I n A Rated breaking capacity ka AC 50 ka DC 8 Mounting position Any, preferably vertical Non-interchangeability Using adapter sleeves Using screw adapter or adapter sleeves Resistance to climate C Up to 5 at 95 % rel. humidity Ambient temperature C , humidity 90 % at 0 5SE1 Size D01 D0 I_05d h Ød Rated current in A Dimension d Dimension h 3 3 5SD0, 5SD30, 5SD0, 5SD80 Size/thread DII/E7 d,5 I01 07 Rated current in A Dimension d Siemens /01

149 Siemens AG 015 SITOR Semiconductor Fuses NEOZED and DIAZED design 5SD50, 5SD0, 5SD70 Size/thread DIII/E33 d 8 I01 08 Rated current in A Dimension d SD5, 5SD50 Size/thread DIV/R1¼ 3,5 I01_08 Rated current in A 80 0 Dimension d 5 7 d 57 Siemens /01 17

150 Siemens AG 015 SITOR Semiconductor Fuses NEOZED and DIAZED design Technical specifications Type Size NEOZED design I n P v I t s I t a 1 ms ms 30 V AC 00 V AC A W K A s A s A s A s 5SE13 D SE SE130 D SE SE SE SE Type Size DIAZED design I n P v I t s I t a 1 ms 500 V AC A W K A s A s 5SD0 DII SD SD SD SD50 DIII SD SD SD5 DIV SD Siemens /01

151 SITOR Semiconductor Fuses NEOZED and DIAZED design Characteristic curves 5SE13.. series Size: Operational class: Rated voltage: Rated current: D01, D0 gr 00 V AC/50 V DC... 3 A Time/current characteristics diagram Melting I t values diagram [s] vs 3 I01_1173a I I # 1 % #? Siemens AG 015 I I I! I I 1!! # 0-1 A 1 A 0 A 5 A 3/35 A 50 A 3 A! # # - & &! & & # A BB p [A] Current limitation diagram! # 1 %!! #! & &! & & # A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component Siemens /01 19

152 ? Siemens AG 015 SITOR Semiconductor Fuses NEOZED and DIAZED design 5SD, 5SD5 series Size: Operational class: Characteristic: Rated voltage: Rated current: DII, DIII, DIV gr Super quick 500 V AC/500 V DC A Time/current characteristics diagram Melting I t values diagram I L I! 1? I I # 1 % % >! &! #! # &! #! # #! #! I I I! I I & & &! & A BB! & &! F Current limitation diagram 1 # > &! #!! #! # &! & & # A BB Peak short-circuit current with largest DC component % Peak short-circuit current without DC component 150 Siemens /01

153 Siemens AG 015 SITOR Semiconductor Fuses Configuration Overview Parameter The fuse links are selected according to rated voltage, rated current, breaking I t value I t a and varying load factor, taking into consideration other specified conditions. All of the following data refer, unless otherwise specified, to the use of alternating current from 5 Hz to Hz. Rated voltage U n The rated voltage of a SITOR fuse link is the voltage specified as the rms value of the AC voltage on the fuse link and in the ordering and configuration data and the characteristics. Always ensure that the rated voltage of the fuse link you select is such that the fuse link will reliably quench the voltage driving the short-circuit current. The driving voltage must not exceed the value U n + %. Please note that the supply voltage U v0 of a power converter can also be increased by %. If, in the shorted circuit, two branches of a converter circuit are connected in series, and if the short-circuit current is sufficiently high, it can be assumed that voltage sharing is uniform. It is essential to observe the instructions in Series connection of fuse links on page158. Rectifier operation The supply voltage U v0 is the driving voltage with converter equipment that can only be used for rectifier operation. Inverter operation With converter equipment that can also be used for inverter operation, inverter shoot-through may occur as faults. In this case, the driving voltage U WK in the shorted circuit is the sum of the infeed direct voltage (e.g. the e.m.f. of the DC generator and the AC-line supply voltage. When rating a fuse link, this sum can be replaced by an AC voltage whose rms value is 1.8 times that of the AC-line supply voltage (U WK = 1.8 U v0. The fuse links must be rated so that they reliably quench the voltage U WK. VSI voltage VSI is the abbreviation for Voltage Sourced Inverter. The VSI voltage U VSI is a DC test voltage defined in IEC 09-, specifically for use in applications with energy stores. The characteristic feature of such applications is the extremely steep rise in current in the event of a fault. The VSI voltage and the corresponding I t value for SITOR fuses 3NB1 and 3NB is specified in the Technical Data table; the values for all other SITOR fuses are available on request. Rated current I n, load rating The rated current of a SITOR fuse link is the current specified in the Selection and ordering data, in the Characteristic curves and on the fuse link as the rms value of an alternating current for the frequency range 5 Hz to Hz. When operating fuse links with rated current, the following are considered normal operating conditions: Natural air cooling with an ambient temperature of +5 C Conductor cross-sections equal test cross-sections (see table Test cross-sections, for operation in LV HRC fuse bases and switch disconnectors, see Selection and ordering data in Catalog LV. Conduction angle of a half-period el Continuous load maximum with rated current For operating conditions that deviate from the above, the permissible load current I n of the SITOR fuse link can be determined using the following formula: I n = k u k q k k l VL I n with I n Rated current of the fuse link 1 k u Correction factor for ambient temperature (page 15 k u Correction factor for conductor cross-section (page 15 k Correction factor for conduction angle (page 15 k I Correction factor for forced-air cooling (page 15 VL Varying load factor (page 153. Test cross-sections Rated current Test cross-sections I n (3NC, 3NC11, 3NC1, (all other series 3NC15, 3NC, 3NE1..., 3NE80.., 3NE series 1 A Cu mm Cu mm ( ( ( When using SITOR fuse links in LV HRC fuse bases according to IEC/EN and in fuse switch disconnectors and switch disconnectors with fuses, please also refer to the information in the Selection and ordering data in Catalog LV. Siemens /01 151

154 Siemens AG 015 SITOR Semiconductor Fuses Configuration Correction factor for ambient temperature k u The influence of the ambient temperature on the permissible load of the SITOR fuse link is taken into account using the correction factor k u as shown in the following diagram: k u Correction factor 1, 1,1 1,0 0,9 0, Ambient temperature C Correction factor for conductor cross-section k q The rated current of the SITOR fuse links applies to operation with conductor cross-sections that correspond to the respective test cross-section (see the table on page 151. In the case of reduced conductor cross-sections, the correction factor k q must be used, as shown in the following diagram: q k Correction factor 1,00 0,95 0,90 0,85 0,80 0,75 0,70 0, % Connection cross-section (as a % of the test cross-section a = Reduction of cross-section of one connection b = Reduction of cross-section of both connections b a I01_13 I01_139 Correction factor for conduction angle k The rated current of the SITOR fuse links is based on a sinusoidal alternating current (5 Hz to Hz. However, in converter operation, the branch fuses are loaded with an intermittent current, whereby the conduction angle is generally 180 el or el. With this load current wave form, the fuse link can still carry the full rated current. In the case of smaller conduction angles, the current must be reduced in accordance with the following diagram. k Correction factor 1,1 1,0 0,9 0,8 0,7 0, 0, Valve conducting period el Correction factor for forced-air cooling k l In the case of increased air cooling, the current carrying capacity of the fuse links increase with the air speed, air speeds > 5 m/s do not effect any significant further increase in current carrying capacity. k l Correction factor 1, 1,3 1, 1,1 1,0 0 Air velocity I01_138 m/s I01_ Siemens /01

155 Siemens AG 015 SITOR Semiconductor Fuses Varying load factor VL The varying load factor VL is a reduction factor by which the non-aging current carrying capacity of the fuse links can be determined for any load cycles. Due to their design, the SITOR fuse links have different varying load factors. In the characteristic curves of the fuse links, the respective varying load factor VL for >000 load changes (1 hour ON, 1 hour OFF is specified for the expected operating time of the fuse links. In the event of a lower number of load changes during the Configuration expected operating time, it may be possible to use a fuse link with a smaller varying load factor VL as shown in the following diagram. In the case of uniform loads (no load cycles and no shutdowns, the varying load factor can be taken as VL = 1. For load cycles and shutdowns that last longer than 5 min. and are more frequent than once a week, you need to select the varying load factor VL specified in the characteristic curves of the individual fuse links. LA / n 1,1 1,0 0,9 0,8 VL: 1,0 0,95 0,9 0,85 0,8 I01_ 0,7 0, Permissible number of load cycles Waveform of the varying load factor VL for load cycles Fuse currents for operation in power converter The rms value of the fuse current can be calculated for the most common converter circuits from the (smoothed direct currenti d or the conductor current I L according to the following table: Converter circuit Rms value of the conductor current (phase fuse Single-pulse center tap connection (M I d -- Double-pulse center tap connection (M 0.71 I d -- Three-pulse center tap connection (M I d -- Six-pulse center tap connection (M 0.1 I d -- Double three-pulse center tap connection (parallel (M I d -- Two-pulse bridge circuit (B 1.0 I d 0.71 I d Six-pulse bridge circuit (B 0.8 I d 0.58 I d Single-phase bidirectional circuit (W1 1.0 I L 0.71 I L Rms value of the branch current (branch fuse I t values In the event of a short circuit, the current of the fuse link increases during melting time t s up to let-through current I c (melting current peak. During the arc quenching time t L, the electric arc develops and the short-circuit current is quenched (see the diagram below. c t s t A t L t I01_11 operating time (t s +t L, known as the breaking I t value, determines the heat to be fed to the semiconductor device that is to be protected during the breaking operation. In order to ensure adequate protection, the breaking I t value of the fuse link must be smaller than the I t value of the semiconductor device. As the temperature increases, i.e. preloading increases, the breaking I t value of the fuse link decreases almost in the same way as the I t value of a semiconductor device, so that it is sufficient to compare the I t values in a non-loaded (cold state. The breaking I t value (I t a is the sum of the melting I t value (I t s and the quenching I t value (I t L. I dt (semiconductor, t vj = 5 C, t p = ms > I t A (fuse link Current path when switching fuse links The integral of the current squared I dt over the total Siemens /01 153

156 Siemens AG 015 SITOR Semiconductor Fuses Configuration Melting I t value I t s The melting value I t can be calculated from the value pairs of the time/current characteristic curve of the fuse link for any periods. As the melting time decreases, the melting I t value tends towards a lower limit value at which almost no heat is dissipated from the bottleneck of the fuse element to the environment during the melting process. The melting I t values specified in the selection and ordering data and in the characteristic curves correspond to the melting time t vs = 1 ms. Quenching I t value I t L Whereas the melting I t value is a characteristic of the fuse link, the quenching I t value depends on circuit data, such as: The recovery voltageu w The power factor p.f. of the shorted circuit The prospective current I p (current at the installation position of the fuse link if this is jumpered The maximum quenching I t value is reached at a current of x I n to 30 x I n depending on the fuse type. Breaking I t value I t a, correction factor k A The breaking I t values of the fuse links are specified in the characteristic curves for the rated voltage U n. In order to determine the breaking I t value for recovery voltage U w the correction factor k A must be taken into account. I t a (at U w = I t a (at U n k A The characteristic correction factor k A (see the following diagram is specified in the characteristic curves for the individual fuse series. The breaking I t values determined in this way apply to prospective currents I p I n and p.f. = A k Correction factor 0,8 0, 0, 0, Recovery voltage U w I01_1 700 V Correction factor k A for breaking I t value Example: Series 3NE Siemens /01

157 Siemens AG 015 SITOR Semiconductor Fuses Configuration Taking into account the recovery voltage U w The recovery voltage U w is derived from the voltage driving the short-circuit current. For most faults, the driving voltage is equal to the supply voltage U v0 ; however, for shoot-throughs it is 1.8 times the value for the supply voltage U v0 (see rated voltage, page 151. If the shorted circuit contains two branches of a converter circuit and thus two fuse links in series, and if the short-circuit current is sufficiently high (see series connection, page 158 it can be assumed that there is a uniform voltage sharing, i.e. U w = 0.5 U v0 or in the case of shoot-throughs U w = 0.9 U v0. Influence of the power factor p.f. The specifications in the characteristic curves for the breaking I t values (I t a refer to a power factor of p.f. = 0.35 (exception: for 3NC58.., 3NE.., 3NE9.. SITOR fuse links, the following applies: p.f. = 0.. The dependence of the breaking I t values on the power factor p.f. at 1.0 U n and at 0.5 U n is shown in the following diagram: % A A Cleaning- value at p. f. (as a % of at p. f. = 0.35 or b a 0, 0, 0, 0,8 Power factor p. f. I01_13 Breaking I t value I t a of SITOR fuse links dependent on the power factor p.f. at 1.0 U n at 0.5 U n a = for 3NC58.., 3NE.., 3NE9.. SITOR fuse links (reference to p.f. = 0. b = for all other SITOR fuse links (reference to p.f. = 0.35 Siemens /01 155

158 t Siemens AG 015 SITOR Semiconductor Fuses Configuration Time/current characteristics The solid time/current characteristic curves in the following diagram specify the time to melting for the non-loaded fuse link in a cold state (max. +5 C. s vs Virtual pre-arcing time 1x 1x 3 1x 1x 1 1x 0 1x -1 1x A A 1x 1 x 1 81 x 81 x 3 81 x Prospective short-circuit current A 35 A: Operational class gr A: Operational class ar If the time/current characteristic curve in the long-time range (t vs > 30 s is dashed (fuse links of operational class ar, this specifies the limit of the permissible overload in a cold state. If the dotted part of the characteristic curve is exceeded, there is a risk of damage to the ceramic body of the fuse link. The fuse link can only be used for short-circuit protection. In this case, an additional protective device (overload relay, circuit breaker is required to protect against overload. In the case of controlled converter equipment, the current limiter is sufficient. If the time/current characteristic curve is shown as a solid line over the entire time range (fuse links of operational class gr or gs, the fuse link can operate in the entire time range. This means it can be used both for overload and short-circuit protection. Real melting time The virtual melting time t vs is specified in the time/current characteristic curve, depending on the prospective current. It is a value that applies to the current squared (di/dt =. In the case of melting times t vs < 0 ms the virtual melting time t vs deviates from the real melting time t s. The real melting time may be several milliseconds longer (depending on the rate of current rise. Within a range of several milliseconds, during which the rise of the short-circuit current can be assumed to be linear, the real melting time for a sinusoidal current rise and 50 Hz is as follows: p I01_157 Taking into account preloading, residual value factor RV Preloading the fuse link shortens the permissible overload duration and the melting time. The residual value factor RV can be used to determine the time that a fuse link can be operated during a periodic or non-periodic load cycle, above and beyond the previously determined permissible load current I n, with any overload current I La without aging. The residual value factor RV is dependent on the preloading V (I rms rms value of the fuse current during the load cycle at permissible load current I n ' V = I rms I n and the frequency of the overloads (see the following diagram, curves a and b. Residual value factor RV 1 0,8 0, 0, 0, 0 0 0, 0, 0, 0,8 1 Pre-load factor V Permissible overload and melting time for previous load a = Frequent surge/load cycle currents (>1/week b = Infrequent surge/load cycle currents (<1/week c = Melting time for preloading Permissible overload duration = Residual value factor RV Melting time t vs (Time/current characteristic curve A reduction of the melting time of a fuse link in the case of preloading can be derived from curve c. Melting time = Residual value factor RV melting time t vs (Time/current characteristic curve c b a I01_1 t s 3xI t s = I c 15 Siemens /01

159 Siemens AG 015 SITOR Semiconductor Fuses Configuration Let-through current I c The let-through current I c can be determined from the current limiting characteristics (current limitation at 50 Hz specified for the respective fuse link. This depends on the prospective current and the DC component when the short circuit occurs (instant of closing. The following diagram shows the let-through current I c of a fuse link, depending on the prospective short-circuit current I p using the 3NE333-0B SITOR fuse link as an example. A c Let-through current 1x 5 1x 1x 3 Example: 3NE333-0B SITOR fuse link Unlimited peak values: DC component 50% DC component 0% 50 A 1x 1 x 1 x 3 1 x 1 x 5 Prospective short-circuit current p A Rated breaking capacity The rated breaking capacity of all SITOR fuse links is at least 50 ka, unless higher values are specified in the characteristic curves. The data apply to a test voltage of 1.1 U n, 5 Hz to Hz and 0.1 p.f. 0.. In the case of inception voltages that are below the rated voltage, as well as rated currents of the fuse links that are below the maximum rated current of a fuse series, the breaking capacity is considerably higher than the rated breaking capacity. I01_158 Peak arc voltage Û s During the quenching process, a peak arc voltage Û s occurs at the connections of the fuse link which can significantly exceed the supply voltage. The level of the peak arc voltage depends on the design of the fuse link and the level of the recovery voltage. It is presented in characteristic curves as a function of the recovery voltage U w (see the following diagram. s V Û Peak arc voltage Recovery voltage Uw V Example: 3NE333-0B SITOR fuse link The peak arc voltage occurs as a cutoff voltage at the semiconductor devices not in the shorted circuit. In order to prevent voltage-related hazards, the peak arc voltage must not exceed the peak cutoff voltage of the semiconductor devices. Power dissipation, temperature rise On reaching the rated current, the fuse elements of the SITOR fuse links have a considerably higher temperature than the fuse elements of line protection fuse links. The power dissipation specified in the characteristic curves is the upper variance coefficient if the fuse link is loaded with the rated current. In the case of partial loads, this power dissipation decreases as shown in the following diagram. % Power dissipation at partial load (as a % of the power dissipated at rated current Load current % (as a % of rated current n I01_15 I01_1 The temperature rise specified in the characteristic curves applies to the respective reference point and is determined when testing the fuse link (test setup according to DIN VDE 03, Part 3 and IEC 9-. Siemens /01 157

160 Siemens AG 015 SITOR Semiconductor Fuses Configuration Parallel and series connection of fuse links Parallel connection If a branch of a converter circuit has several semiconductor devices so that the fuse links are connected in parallel, only the fuse link connected in series to the faulty semiconductor device is tripped in the event of an internal short circuit. It must quench the full supply voltage. To boost the voltage, two or more parallel fuse links can be assigned to a single semiconductor device without reducing the current. The resulting breaking I t value increases with the square of the number of parallel connections. In this case, in order to prevent incorrect distribution of the current, you must only use fuse links of the same type or, better still, the parallel switched SITOR 3NB fuses. Series connection There are two kinds of series connection available: Series connection in the converter branch Two fused converter branches through which a short-circuit current flows in series In both cases, uniform voltage sharing can only be assumed if the melting time of the SITOR fuse link does not exceed the value specified in the following table. SITOR fuse links Type 3NC.. 3NC1.. 3NC15.. 3NC.. 3NC.. 3NC58.. 3NC73.. 3NC8.. 3NE.. 3NE1.. 3NE13.. 3NE1.. 3NE18.. 3NE3.. 3NE33.. 3NE3.. 3NE35.. 3NE3.. Maximum melting time for uniform voltage sharing ms Cooling conditions for series-connected fuse links should be approximately the same. If faults are expected, during which the specified melting times are exceeded (as a result of a slower current rise, it can no longer be assumed that voltage sharing is uniform. The voltage of the fuse links must then be rated so that a single fuse link can quench the full supply voltage. It is best to avoid the series connection of fuse links in a converter connection branch and instead use a single fuse link with a suitably high rated voltage NE1.. 3NE3.. 3NE NE5.. 3NE.. 3NE NE7.. 3NE80.. 3NE87.. 3NE9.. 3NE9.. 0 Use with direct current In general, all SITOR fuses can be used for AC and DC applications. For AC fuse links that are to be used in DC circuits, some data may vary from the data specified in the characteristic curves for alternating current. The new 150 V DC fuses 3NB1 and 3NB have been explicitly tested with DC voltage. They can also be used with AC voltage; details on request. Permissible direct voltage The permissible direct voltage U perm of the fuse links depends on the rated voltage U n, on the time constants =L/R in the DC circuit and on the prospective current I p. The permissible direct voltage refers to the rated voltage U n and is specified depending on the time constants, the prospective current is a parameter (see the following diagrams. perm n perm. DC voltage U rated voltage U 1,00 0,90 0,80 0,70 0,0 0,50 0, Time constant = L / R ms Applies to all series except 3NE.., 3NE18.. perm. DC vol tage U perm rated voltage U (00 V n 0,90 0,80 0,70 0,0 0,50 0,0 For series 3NE.., 3NE18.. p p 0 n 0 n p = n p = n p = 5 n p = 5 n 0, Time constant = L / R ms I01_17 I01_ Siemens /01

161 Siemens AG 015 SITOR Semiconductor Fuses Configuration Breaking I t value I t a The breaking I t value I t a depends on the voltage, on the time constants =L/R and on the prospective current I p. It is calculated from the I t a value specified in the characteristic curve for the respective fuse link at rated voltage U n and correction factor k A whereby, instead of the recovery voltage U w, the direct voltage is used for the fuse link to switch against. The breaking I t value determined in this way applies under the following conditions: Time constant L/R 5 ms for I p 0 I n Time constant L/R ms for I p = I n The breaking I t values increase by 0 % For I p 0 I n and time constants L/R = 0 ms For I p = I n and time constants L/R = 35 ms Peak arc voltage Û s The peak arc voltage Û s is determined from the curve specified in the characteristics for the respective fuse link, whereby instead of the recovery voltage U w, the direct voltage is used against which the fuse link is to switch. The peak arc voltage determined in this way applies under the following conditions: Time constants L/R 0 ms for I p 0 I n Time constants L/R 35 ms for I p = I n The switching voltages increase by 0 % For I p 0 I n and time constants L/R = 5 ms For I p = I n and time constants L/R = 0 ms Indicator An indicator displays the switching of the fuse link. The SITOR fuse links have an indicator whose operational voltage lies between 0 V (U n 00 V and 0 V (U n > 00 V. Accessories Fuse bases, fuse pullers Some of the SITOR fuse links can be inserted in matching fuse bases. The matching fuse bases (single-pole and three-pole and the respective fuse pullers are listed in the Technical specifications, from page 8. Note Even if the values of the rated voltage and/or current of the fuse bases are lower than those of the allocated fuse link, the values of the fuse link apply. Siemens /01 159

162 Siemens AG 015 SITOR Semiconductor Fuses Configuration Fuse switch disconnectors, switch disconnectors with fuses Some series of SITOR fuse links are suitable for operation in 3NP and 3NP5 fuse switch disconnectors or in 3KL and 3KM switch disconnectors with fuses (see Catalog LV, chapter on Switch Disconnectors. When using switch disconnectors, the following points must be observed: Because, compared to LV HRC fuses for line protection, the power dissipation of the SITOR fuse links is higher, the permissible load current of the fuse links sometimes needs to be reduced, see below (Configuration Manual Fuse links with rated currents I n > 3 A must not be used for overload protection even when they have operational class gr Note: By contrast, all fuse links of the 3NE1... series with rated currents I n from 1 A to 850 A and operational classes gr and gs can be used for overload protection. The rated voltage and rated isolation voltage of the switch disconnectors must at least correspond to the existing voltage When using fuse links of the 3NE3.., 3NE33.., 3NE3.., 3NC.. and 3NC8.. series the breaking capacity of fuse switch disconnectors must not be fully utilized due to the slotted blade. Occasional switching of currents up to the rated current of the fuse links is permissible When used in fuse switch disconnectors, fuse links of the 3NE1.. series may only be occasionally switched, and only without load, as this places the fuse blade under great mechanical stress In the Technical specifications, starting on page 8, the switch disconnectors are allocated to their respective individual fuse links. Specifying the rated current I n for non-agingoperation with varying load Power converters are often operated not with a continuous load, but with varying loads; these can also temporarily exceed the rated current of the power converter. The selection process for non-aging operation of SITOR fuse links for four typical types of load is as follows: 1 Continuous load Unknown varying load, but with known maximum current Varying load with known load cycle Occasional surge load from preloading with unknown surge outcome The diagrams for the correction factors k u, k q, k, k l, page 15, and the residual value factor RV, page 15 must be observed. The varying load factor VL for the fuse links is specified on page 153. Specifying the required rated current I n of the fuse link is carried out in two steps: 1. Specifying the rated current I n on the basis of the rms value I rms of the load current: 1 I n > I rms k u k q k k l VL Permissible load current I n ' of the selected fuse link: I n = k u k q k l k l VL I n. Checking the permissible overload duration of current blocks exceeding the permissible fuse load current I n. Melting time t vs (Time/current characteristic curve Residual value factor RV Overload duration t k To do this, you require the previous load ratio V = I rms I n as well as the characteristic curve permissible overload and melting time for previous load (page 15, curve a and the Time/current characteristic curve for the selected fuse link. If a determined overload duration is less than the respective required overload duration, then you need to select a fuse link with a greater rated current I n (taking into account the rated voltage U n and the permissible breaking I t value and repeat the check. Continuous load Load Load Load current 0 t I01_19 Rated current I n of the fuse link 1 I n I La k u k q k k l VL I La = Load current of the fuse link (rms value Less than 1 shutdown per week: VL = 1 More than 1 shutdown per week: VL = see Technical specifications on page 8. 1 In the case of varying loads that cannot be assigned to one of the four types of load shown here, please contact us. Siemens /01

163 Siemens AG 015 SITOR Semiconductor Fuses Unknown varying load, but with known maximum current I max La Load current Rated current I n of the fuse link 0 max 1 I n I max k u k q k k l VL I max = maximum load current of the fuse link (rms value Varying load with known load cycle I rms = La Load current k = n La1 t 1 t t 3 t SD I LK = maximum load current of the fuse link (rms value La I t Lak k k = SD I La1 I t 1 + I La t + I La3 t 3 rms = SD La3 t t 'n RMS I01_150 I01_151 Occasional surge load from preloading with unknown surge outcome Configuration Specifying the required rated current I n of the fuse link is carried out in two steps: 1. Specifying the rated current I n on the basis of the previous load current I prev : 1 I n > I prev k u k q k k l VL Permissible load current I n ' of the selected fuse link: I n = k u k q k k l VL I n. Checking the permissible overload duration of the surge current I surge Melting time t vs (time/current characteristic curves Residual value factor RV Surge wave duration t surge To do this, you require the previous load ratio V = I rms I n as well as the characteristic curve Permissible overload and melting time for previous load (page 15, curve a or b and the time/current characteristic curve for the selected fuse link. If a determined overload duration is less than the required overload duration t surge, then you need to select a fuse link with a greater rated current I n (taking into account the rated voltage U n and the permissible breaking I t value and repeat the check. Load current Load 0 Condition: t interval 3 x t surge t interval 5 min n' surge tsurge tinterval Selection examples For a converter assembly in circuit (B A (B C, whose rated direct current is I dn = 850 A, fuse links that can be installed as branch fuses should be selected. The choice of fuse is shown for different operating modes of the converter assembly. Data for converter assembly Supply voltage U N = 3 AC 50 Hz 00 V Recovery voltage U W = 30 V = U N x 0.9 (for shoot-throughs Thyristor T 508N (eupec, It value i dt = 30 3 A s ( ms, cold Fuse links, natural air cooling, ambient temperature u = +35 C Conductor cross-section for copper fuse links: mm Conversion factor direct current I d /fuse load current I La : I La = I d For the following examples, it is assumed, in the case of loads that exceed the rated direct current of the converter assembly, that the converter assembly is rated for these loads. prev t I01_15 Siemens /01 11

164 Siemens AG 015 SITOR Semiconductor Fuses Configuration Continuous, no-break load Varying load with known load cycle = '! = = ' =! # & 1 #! A BB! % J = ' Direct current I d = I dn = 850 A I La = I d 0.58 = 93 A Selected: 3NE3335 SITOR fuse link (50 A/00 V, VL = 1 Breaking I t value I t A = = A s Test cross-section to 151: 00 mm The following correction factors are to be applied: k u = 1.0 ( u = +35 C k q = 0.91 (conductor cross-section, double-ended, 0 % of test cross-section k = 1.0 (conduction angle = k l = 1.0 (no forced-air cooling Required rated current I n of the SITOR fuse link: 1 I n I La = 93 A k u k q k k l VL J J J! J 5,!! I Direct current: I d1 =0 A t 1 = 0 s I d = 500 A t = 0 s I d3 =00 A t 3 = s I d = 0 A t = 0 s Fuse current: I La1 = = 9 A I La = = 90 A I La3 = = 580 A rms value of load current I rms = = 317A 330 J 1 # # 1 93 A , 0 0, 91 1, 0 1, 0 1, 0 Unknown varying load, but with known maximum current = = N! # Max. direct current I dmax = 750 A Max. fuse current I max = I dmax 0.58 = 35 A Selected: 3NE333-0B SITOR fuse link (50 A/00 V, VL = 1 Breaking I t value I t A = = A s test cross-section to 151: 00 mm = 531 A The following correction factors are to be applied: k u = 1.0 ( u = +35 C k q = 0.91 (conductor cross-section, double-ended, 0 % of test cross-section k = 1.0 (conduction angle = k l = 1.0 (no forced-air cooling Required rated current I n of the SITOR fuse link: 1 I n I max = 93 A k u k q k k l VL 1 35 A , 0 0, 91 1, 0 1, 0 1, 0 J = 9 A 1 # Selected: 3NE3333 SITOR fuse link (50 A/00 V, VL = 1 Breaking I t value I t a = = 93 3 A s test cross-section to 151: 30 mm The following correction factors are to be applied: k u = 1.0 ( u = +35 C k q = 0.9 (conductor cross-section, double-ended, 50 % of test cross-section k = 1.0 (conduction angle = k l = 1.0 (no forced-air cooling 1. Required rated current I n of the SITOR fuse link: 1 I n I rms = 93 A k u k q k k l VL A , 0 0, 9 1, 0 1, 0 1, 0 = 331 A Permissible load current I n ' of the selected fuse link: I n = k u k q k k l VL I n = = 31 A. Checking the permissible overload duration of current blocks exceeding the permissible fuse load current I n Previous load ratio: I V rms 317 = = = 07, I n 31 Residual value factor RV: For V = 0.7 of curve a (Characteristic curve page 15, frequent surge/load cycle currents RV = 0. Current block I La1 : Melting time t vs : 30 s (from Time/current characteristic curve for 3NE3 333 t vs RV = 30 s 0. = s > t 1 Current block I La3 : Melting time t vs : 0 s (from Time/current characteristic curve for 3NE3 333 t vs RV = 0 s 0. = 0 s > t 3 1 Siemens /01

165 Siemens AG 015 SITOR Semiconductor Fuses Occasional surge load from preloading with unknown surge outcome Configuration La surge = 15 A t surge = 8 s prev = 0 A I01_15 t Direct current: I dprev = 700 A I dsurge = 500 A t surge = 8 s Fuse current: I prev =I dprev 0.58 = 0 A I surge =I dsurge 0.58 = 15 A Conditions: t interval 3 t surge and t interval 5 min must be fulfilled. Selected: 3NE3333 SITOR fuse link (50 A/00 V, VL = 1 Breaking I t value I t a = = A s Test cross-section to 151: 00 mm The following correction factors are to be applied: k u = 1.0 ( u = +35 C k q = 0.91 (conductor cross-section, double-ended, 0 % of test cross-section k = 1.0 (conduction angle = k l = 1.0 (no forced-air cooling 1. Required rated current I n of the SITOR fuse link: 1 I n I prev = 93 A k u k q k k l VL 1 0 A , 0 0, 91 1, 0 1, 0 1, 0 = 37 A Permissible load current I n ' of the selected fuse link: I n =k u k q k k l VL I n = = 50 A. Checking the permissible overload duration of the surge current I surge Previous load ratio: I V prev 0 = = = 078, I n 50 Residual value factor RV: for V = 0.78 of curve a (characteristic curve page15, frequent surge/load cycle currents RV = 0.18 surge current I surge : Melting time t vs : 1 s (from Time/current characteristic curve for 3NE3333 t vs RV = 1 s 0.18 = 19.8 s > t surge Correction factors can be found on page 151 and page 15. Siemens /01 13

166 Siemens AG 015 Photovoltaic fuses Introduction Overview Special demands are made on fuses for application in photovoltaic systems. These fuses have a high DC rated voltage and a tripping characteristic specially designed to protect PV modules and their connecting cables (the newly defined operational class gpv. It is also crucial that the PV fuses do not age in spite of strongly alternating load currents, in order to ensure high plant availability throughout the service life of the PV system. The fuses must also be able to withstand high temperature fluctuations without damage. These requirements were only incorporated into an international standard in recent years and have now been published as IEC 09-. All Siemens photovoltaic fuse systems comply with this new standard. Furthermore, they also already comply with the recently agreed corrections to the characteristic curves, which will be incorporated in the next standard update. The IEC cylindrical fuses used as phase fuses also correspond to the characteristic curves specified in UL standard UL 579. The non-fusing current I nf and fusing current I f test currents are crucial to the shape of the characteristic curves. Standard I nf I f Current IEC standard 1.13 x I n 1.5 x I n UL standard 1.0 x I n 1.35 x I n Future IEC standard 1.05 x I n 1.35 x I n Siemens fuses 1.13 x I n 1.35 x I n These test currents of gpv phase fuses to 3 A apply for a conventional test duration of one hour; at I nf, the fuse must not trip within an hour; at I f, it must trip within an hour. The PV cylindrical fuses of size mm x 38 mm offer an especially space-saving solution for the protection of the strings. The fuse holders of size x 38 mm can be supplied in singlepole and two-pole versions with and without signal detectors. In the case of devices with signal detector, a small electronic device with LED is located behind an inspection window in the plug-in module. If the inserted fuse link is tripped, this is indicated by the LED flashing. The devices have a sliding catch that enables removal of individual devices from the assembly. The infeed can be from the top or the bottom. Because the cylindrical fuse holders are fitted with the same anti-slip terminals at the top and the bottom, the devices can also be bus-mounted at the top or the bottom. The PV fuses in LV HRC design are usually used as cumulative fuses upstream of the inverter. In addition, they can also be used for protecting groups (PV subarrays. For the PV cumulative fuses of size 1, standard LV HRC fuse bases are available. For PV cumulative fuses of size 1L, 1XL, L, XL and 3L, we have developed a special 3NH7...- fuse base with a swiveling mechanism which combines maximum touch protection with maximum user-friendliness. This makes it possible to change fuses safely and without the need for any tools, such as a fuse handle. This provides safe and fast access even in an emergency. Our cylindrical fuse holders and fuse bases with swiveling mechanism comply with the IEC 09- standard and are considered fuse disconnectors as defined in the IEC 097 switchgear and controlgear standard. Under no circumstances are they suitable for switching loads. To ensure that PV fuses are correctly selected and dimensioned, the specific operating conditions and the PV module data must be taken into account when calculating voltage and current ratings. Benefits Protection of the modules and their connecting cables in the event of reverse currents Safe tripping in case of fault currents reduces the risk of fire due to DC electric arcs Safe isolation when the fuse holder/fuse base is open PV cylindrical fuse system, 3NW70..-, 3NW0..- PV LV HRC fuse systems, 3NH73..-, 3NE13..-D 1 Siemens /01