High Speed Fuses. Section Contents Page

Transcription

1 Section Contents Page General pplications North merican fuses & accessories DFJ - High speed Class J fuse Square ody fuses & accessories S 88 fuses & accessories Ferrule fuses & accessories Scan this tag to get the latest product information for. TM 11

2 General pplications Rated Voltage The C voltage rating of ussmann fuses is given in volts rms. tested to IEC are tested at 5% above their rated voltage. ritish Style S 88 fuses are tested at 10% above its rated voltage. UL recognition tests are performed at the rated voltage. Rated Current Rated current is given in amps rms. ussmann fuses can continuously carry the rated current. Power Factor For other power factor values, the total clearing integral can be calculated as a multiple of the clearing integrals, the correction factor K and the correction factor X. X Melting Characteristic The melting characteristic shows the virtual melting time in seconds as a function of the prospective current in amps rms. The fuses are specially constructed for short-circuit protection against high level fault currents. Loading and operation of the fuse in the noncontinuous/dashed section of the melt curve must be avoided. The curve can also be read as the real melting time as a function of the RMS value of the pre-arc current. Virtual Pre-rcing Time In Seconds Clearing Integrals The total clearing I t at rated voltage and at power factor of 15% are given in the electrical characteristics. For other voltages, the clearing I t is found by multiplying by correction factor, K, given as a function of applied working voltage, E g, (rms) K Prospective Current In mperes RMS E g rc Voltage This curve gives the peak arc voltage, U L, which may appear across the fuse during its operation as a function of the applied working voltage, E g, (rms) at a power factor of 15%. Power Losses Watts loss at rated current is given in the electrical characteristics. The curve allows the calculation of the power losses at load currents lower than the rated current. The correction factor, K p, is given as a function of the RMS load current, I b, in % of the rated current COS U L Prospective Current in mps RMS Eg Kp I 0.1 b % Cut-Off Current fuse operation relating to short-circuits only. When a fuse operates in its current-limiting range, it will clear a shortcircuit in less than 1 cycle. lso, it will limit the instantaneous peak let-through current to a value substantially less than 1

3 General pplications that obtainable in the same circuit if that fuse were replaced with a solid conductor of equal impedance. asymmetrical current symmetrical current Parallel Connection When fuses are connected in parallel it is recommended that the applied voltage does not exceed 0.9 U N (the rated voltage of the fuse). This is due to the fact that the energy released within the fuses may be unevenly shared between the parallel connected barrels. When fuses are connected in parallel, one must take into account that the current sharing is not necessarily equal. nd it must be checked, that the maximum load current is not exceeded. Series Connection in series may not equally divide the applied voltage. It is recommended that series connected fuses should only be operated at fault currents that yield melting times less than 10 ms and a recovery voltage per fuse of less than or equal to 0.9 U N (the rated voltage of the fuse). Mounting Guidance The recommendations below have to be followed when mounting a ussmann fuse with end plate threaded holes. 1. Screw in studs: 5 N m Max, 3 N m Min. ttachment of the fuse to bussbar by means of nut and washer: Thread Torque (N m)* Configuration Max Min , M , M , M *1 N m = lb-ft Overloads The design of ussmann fuses is such that they can be operated under rather severe operating conditions imposed by overloads (any load current in excess of the maximum permissible load current). In applications, there will be a maximum overload current, Imax, which can be imposed on the fuse with a corresponding duration and frequency of occurrence. Time durations fall into two categories: 1. Overloads longer than one second. Overloads less than one second termed impulse loads. The following table gives general application guidelines which, in the expression Imax < (% factor) x I t. I t is the melting current corresponding to the time t of the overload duration as read from the time-current curve of the fuse. The guidelines in the table below determine the acceptability of the selected fuses for a given I max. Frequency of Occurrence Overloads (> 1 sec) Impulse Loads (< 1 sec) Less than once per month I max < 80% x I t I max < 70% x I t Less than twice per week I max < 70% x I t I max < 0% x I t Several times per day I max < 0% x I t When impulse loads are an intrinsic/normal parameter of the load current either as single pulse or in trains of pulses or when their level is higher than the melting current at 0.01 seconds (per time-current curve), contact ussmann for application assistance. In addition to the parameters set forth in the preceding table, the RMS value of the load current as calculated for any period of 10 minutes or more should not exceed the maximum permissible load current. Furthermore, it is important that a fuse should not be applied in the non-continuous/dashed portion of the associated time-current curve. ny time-current combination point which falls in the non-continuous/dashed portion of the time-current curve is beyond the capability of the fuse to operate properly. DC Operation Depending upon the short-circuit time constant and the magnitude of the prospective short-circuit current, the dc voltage at which a fuse can be applied may be less than its ac rating. Long time constants require a lower dc voltage. Conversely, however, higher available prospective shortcircuit currents result in faster fuse openings and thus permit a fuse to be operated at a higher DC voltage. Consult ussmann for Reduction Factor additional information and application assistance when fuses have to operate under DC conditions. 0.9 Load Current Versus Conductor Cross Section (IEC cross section) Reduction of permissible load current when the conductor cross section is less than that given in IEC Publication 9-1 & valid for ussmann high speed fuses. pplication ssistance If you have application problems or need a fuse outside our standard program, please contact the nearest ussmann representative. Phone numbers are shown on the back cover. 13

4 North merican Introduction North merican Contents Catalog mp Number Volts Range Page DFJ FW FW FWX FWH KC KC FWP FWJ ccessories Fuse ases 11 North merican Fuse Ranges mps Volts C DC X X X X X X X X X X X X X General Information ussmann offers a complete range of North merican blade and flush-end style fuses and accessories. Their design and construction were optimized to provide: Low energy let-through (I t) Low watts loss Superior cycling capability Low arc voltage Excellent DC performance North merican style fuses provide an excellent solution for medium power applications. While there are currently no published standards for these fuses, the industry has standardized on mounting centers that accept ussmann fuses. Voltage Rating ll ussmann North merican style fuses are tested at their rated voltage. ussmann should be consulted for applications exceeding those values. ccessories External and internal open fuse indication is available for selected portions of the North merican line. Fuse blocks are available for most applications. 1

5 Drive Fuse DFJ Class J Time-Current Characteristic Curves verage Melt Specifications Description: High speed, current-limiting fuse. The ussmann Drive Fuse will provide maximum protection for C and DC drives and controllers and meet NEC branch circuit protection requirements. The Drive Fuse has the lowest I t of any branch circuit fuse to protect power semiconductor devices that utilize diodes, GTOs, SCRs and SSRs. Dimensions: See page 1 for Class J dimensions. Construction: Melamine tube with silver fuse element. Ratings: Volts 00Vac (or less), 50Vdc (or less) mps 1-00 IR 00k RMS Sym., 100k DC gency Information: CE, Std. 8-8, Class J, UL Listed, Guide JDDZ, File E73, CS Certified, Class 1-0, File Features and enefits Easily coordinated with existing and new variable speed drives and electric controllers. Standard Class J dimensions allowing the use of readily available fuse blocks, holders, and switches. llows the lowest let-thru energy of any branch circuit overcurrent protective device. Current Limitation Curves Typical pplications Protection of C and DC drives Equipment using power semiconductor devices Catalog Numbers (mps) DFJ-1 DFJ-15 DFJ-70 DFJ-5 DFJ- DFJ-0 DFJ-80 DFJ-50 DFJ-3 DFJ-5 DFJ-90 DFJ-300 DFJ- DFJ-30 DFJ-100 DFJ-350 DFJ-5 DFJ-35 DFJ-110 DFJ-00 DFJ- DFJ-0 DFJ-15 DFJ-50 DFJ-8 DFJ-5 DFJ-150 DFJ-500 DFJ-10 DFJ-50 DFJ-175 DFJ-00 DFJ-1 DFJ-0 DFJ-00 Data Sheet: 108 For product data sheets, visit 15

6 North merican FW 130V: FW Specifications Description: North merican style flush-end high speed fuses. Dimensions: See Dimensions illustrations. Ratings: Volts: 130Vac mps: IR: 00k RMS Sym. gency Information: CE, UL Recognized JFHR.E91958 on fuses Electrical Characteristics Total Clearing I t The total clearing I t at rated voltage and at power factor of 15% are given in the electrical characteristics. For other voltages, the clearing I t is found by multiplying by correction factor, K, given as a function of applied working voltage, E g, (rms). Dimensions - in Catalog Number Fig. C D Thread Depth FW-1000H-000H 1.0 Tapped x 1 FW-500H-3000H Tapped 1-0 x 1 FW-000H Tapped 1-0 x 1 1mm = / 1 = 5.mm Fig. 1: K Fig. : Eg rc Voltage This curve gives the peak arc voltage, U L, which may appear across the fuse during its operation as a function of the applied working voltage, E g, (rms) at a power factor of 15%. Power Losses Watts loss at rated current is given in the electrical characteristics. The curve allows the calculation of the power losses at load currents lower than the rated current. The correction factor, K p, is given as a function of the RMS load current, I b, in % of the rated current Catalog Numbers Electrical Characteristics I t ( Sec) Catalog Rated Current Clearing Watts Numbers RMS-mps Pre-arc at 130V Loss FW-1000H FW-100H FW-1500H FW-000H FW-500H FW-3000H FW-000H Watts loss provided at rated current. See accessories on page 11. Features and enefits Excellent DC performance Low arc voltage and low energy let-through (I t) Low watts loss Superior cycling capability Kp U L 50 E g I 0.1 b % Typical pplications DC Common bus DC Drives Power converters/rectifiers Reduced voltage starters D C C Data Sheet:

7 North merican FW 130V: FW : 130V FW-1000H FW-100H FW-1500H FW-000H FW-500H FW-3000H FW-000H Virtual Pre-rcing Time In Seconds Prospective Current In mps RMS Peak Let-Through Curve FW-000H FW-3000H FW-500H FW-000H FW-1500H FW-100H FW-1000H Prospective Short-Circuit Current Symmetrical RMS Data Sheet:

8 North merican FW 150V: FW Specifications Description: North merican style stud-mount fuses. Dimensions: See Dimensions illustrations. Ratings: Volts: 150Vac/dc* mps: IR: 100k Sym. (70-00) 00k Sym. ( ) (70-800) 80Vdc ( ) * Vdc. gency Information: CE, UL Recognized JFHR.E91958 Electrical Characteristics Total Clearing I t The total clearing I t at rated voltage and at power factor of 15% are given in the electrical characteristics. For other voltages, the clearing I t is found by multiplying by correction factor, K, given as a function of applied working voltage, E g, (rms). Dimensions - in Fig. 1: K ) ) Eg ) Range ) Range rc Voltage This curve gives the peak arc voltage, U L, which may 300 appear across the fuse during its operation as a 00 function of the applied working voltage, E g, (rms) at a power factor of 15%. 100 Power Losses Watts loss at rated current is given in the electrical characteristics. The curve allows the calculation of the power losses at load currents lower than the rated current. The correction factor, K p, is given as a function of the RMS load current, I b, in % of the rated current Catalog Numbers Electrical Characteristics Rated I t ( Sec) Catalog Current Clearing Watts Number RMS-mps Pre-arc at 150V Loss FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW Watts loss provided at rated current. See accessories on page 11. Features and enefits Excellent DC performance Low arc voltage and low energy let-through (I t) Low watts loss Superior cycling capability Kp U L 50 E g I 0.1 b % Fig. : Typical pplications DC Common bus DC Drives Power converters/rectifiers Reduced voltage starters mm = / 1 = 5.mm Data Sheet:

9 North merican FW 150V: FW : 150V FW-500 FW-00 FW-700 FW-800 FW-1000 Virtual Pre-rcing Time In Seconds 10 FW-70 FW-80 FW-100 FW-15 FW-150 FW-00 FW-50 FW-300 FW-350 FW Prospective Current In mps RMS Peak Let-Through Curve FW-00 FW-350 FW-300 FW-50 FW-00 FW-150 FW-100 FW-80 FW Prospective Short-Circuit Current Symmetrical RMS Data Sheet:

10 North merican FWX 50V: FWX Specifications Description: North merican style stud-mount and flush-end fuses. Dimensions: See Dimensions illustrations. Ratings: Volts: 50Vac/dc mps: IR: 00k RMS Sym. (35-800) gency Information: CE, UL Recognized JFHR.E51 & CS Component cceptance file Class 1-30, (53787) on fuses (50k Electrical Characteristics 1.5 Total Clearing I t The total clearing I t at rated voltage and at power factor of 15% are given in the electrical characteristics. For other voltages, the 0. clearing I t is found by multiplying by correction factor, K, given as a function of applied working voltage, E g, (rms). K 1) ) Eg ) Range ) Range Dimensions - in Tapped mp Thread Range Fig. C D E F G H J Depth x x 1 1mm = / 1 = 5.mm D E Fig. 1: C J Fig. : Fig. 3: D rc Voltage This curve gives the peak arc voltage, U L, which may appear across the fuse during its operation as a function of the applied working voltage, E g, (rms) at a power factor of 15%. Power Losses Watts loss at rated current is given in the electrical char acteristics. The curve allows the calculation of the power losses at load currents lower than the rated current. The correction factor, K p, is given as a function of the RMS load current, I b, in % of the rated current U L ) 300 ) E g ) Range ) Range Kp Catalog Numbers Electrical Characteristics Rated I t ( Sec) Catalog Current Clearing Watts Number RMS-mps Pre-arc at 50V Loss FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX FWX-1000H FWX-100H FWX-1500H FWX-100H FWX-000H FWX-500H Watts loss provided at rated current. See accessories on page I 0.1 b % H F G C C Features and enefits Excellent DC performance Low arc voltage and low energy let-through (I t) Superior cycling capability Typical pplications DC Common bus DC Drives Power converters/rectifiers Reduced voltage starters 130 Data Sheet: 70005

11 North merican FWX 50V: FWX : 50V 10 FWX (H): 50V 10 Virtual Pre-arcing Time In Seconds FWX-35 FWX-0 FWX-0 FWX-70 FWX-100 FWX-150 Peak Let-Through Curve FWX-00 FWX-350 FXW-00 FWX-500 FWX-00 FWX Prospective Current In mps RMS FWX-800 FWX-00 FWX-00 FWX-300 FWX-00 Virtual Pre-rcing Time In Seconds FWX-1000H FWX-100H FWX-1500H FWX-100H FWX-000H FWX-500H Prospective Current In mps RMS FWX-150 FWX-100 FWX-70 FWX-0 FWX-5 FWX-35 Peak Let-Through Curve FWX-500H FWX-000H FWX-100H FWX-1500H FWX-100H FWX-1000H Prospective Short-Circuit Current Symmetrical RMS Data Sheet: 359 Data Sheet: Prospective Short-Circuit Current Symmetrical RMS 131

12 North merican FWH 500V: FWH Specifications Description: North merican style stud-mount fuses. Dimensions: See Dimensions illustration. Ratings: Volts: 500Vac/dc ( only) mps: IR: 00k Sym. 500Vdc (35-800) gency Information: CE, UL Recognition JFHR.E91958 FWH-_ (35-00, ), JFHR.E51 FWH-_ (5-00), CS Component cceptance Class 1-30, File (35-100). Electrical Characteristics Total Clearing I t The total clearing I t at rated voltage and at power factor of 15% are given in the electrical characteristics. For other voltages, the clearing I t is found by multiplying by correction factor, K, given as a function of applied working voltage, E g, (rms) K 1) ) Eg ) Range ) Range Dimensions - in mp Range Fig. C D E F G H J See Drawing 1mm = / 1 = 5.mm Fig. 1: G F D E C Fig. : J H rc Voltage This curve gives the peak arc voltage, U L, which may appear across the fuse during its operation as a function of theapplied working voltage, E g, (rms) at a power factor of 15%. Power Losses Watts loss at rated current is given in the electrical characteristics. The curve allows the calculation of the power losses at load currents lower than the rated current. The correction factor, K p, is given as a function of the RMS load current, Ib, in % of the rated current. Catalog Numbers Electrical Characteristics Rated I t ( Sec) Catalog Current Clearing Watts Numbers RMS-mps Pre-arc at 500V Loss FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH FWH Watts loss provided at rated current. See accessories on page 11. Features and enefits Excellent DC performance Low arc voltage and low energy let-through (I t) Superior cycling capability Data Sheet: U L ) 00 1) E g 500 1) & Range ) Range Kp I 0.1 b % Typical pplications DC Common bus DC Drives Power converters/rectifiers Reduced voltage starters

13 North merican FWH 500V: FWH 35-00() & (): 500V 10 FWH : 500V FWH-35 FWH-0 FWH-5 FWH-50 FWH-0 FWH-70 FWH-80 FWH-90 FWH-100 FWH-15 FWH-150 FWH-175 FWH-00 FWH-900 FWH-1000 FWH-100 FWH-100 FWH Prospective Current In mps RMS Virtual Pre-rcing Time In Seconds FWH-300 FWH-00 FWH-500 FWH-00 FWH-800 Peak Let-Through Curve 10 5 FWH-100 FWH-100 FWH-100 FWH Prospective Current In mps RMS Peak Let-Through Curve FWH-800 FWH-00 FWH-500 FWH-00 FWH-300 FWH-50 FWH-00 FWH-150 FWH-15 FWH-100 FWH-80 FWH-0 FWH-50 FWH-0 FWH Prospective Short-Circuit Current Symmetrical RMS Prospective Short-Circuit Current Symmetrical RMS Data Sheet: Data Sheet:

14 North merican KC 00V: KC Specifications Description: North merican style stud-mount fuses. These 00V fuses are supplied as replacements only. For new installations, ussmann recommends the 700V FWP Series fuse. Dimensions: See Dimensions illustrations. Ratings: Volts: 00Vac mps: IR: 00k RMS Sym. gency Information: CE, UL Recognition JFHR.E513 on 1-00 only. Catalog Numbers (mps) KC-1 KC-5 KC-175 KC- KC-30 KC-00 KC-3 KC-35 KC-5 KC- KC-0 KC-50 KC-5 KC-5 KC-300 KC- KC-50 KC-350 KC-7 KC-0 KC-00 KC-8 KC-70 KC-50 KC-9 KC-80 KC-500 KC-10 KC-90 KC-00 KC-1 KC-100 KC-700 KC-15 KC-110 KC-800 KC-17.5 KC-15 KC-1000 KC-0 KC-150 See accessories on page 11. Features and enefits Low arc voltage and low energy let-through (I t) Low watts loss Superior cycling capability Typical pplications Power converters/rectifiers Reduced voltage starters Dimensions - in mp Range Fig. 1 3 C D E F G H mm = / 1 = 5.mm Fig. 1: 1-30 & C G D F H Fig. : C G D E F H Data Sheet:

15 North merican KC 00V: KC Specifications Description: North merican style stud-mount and flush-end fuses. These 00V fuses are supplied as replacements only. For new installations, ussmann recommends the 700V FWP Series fuse. Dimensions: See Dimensions illustrations. Ratings: Volts: 00Vac mps: IR: 00k RMS Sym. gency Information: CE, UL Recognition JFHR.E51 on only. Catalog Numbers (mps) KC-35 KC-100 KC-300 KC-0 KC-110 KC-350 KC-5 KC-15 KC-00 KC-50 KC-150 KC-50 KC-0 KC-175 KC-500 KC-70 KC-00 KC-00 KC-80 KC-5 KC-800 KC-90 KC-50 See accessories on page 11. Features and enefits Low arc voltage and low energy let-through (I t) Low watts loss Superior cycling capability Typical pplications Power converters/rectifiers Reduced voltage starters Dimensions - in mp Range Fig. C D E F G H I See Drawing See Drawing 1mm = / 1 = 5.mm Fig. 1: 35-0 and E C D H F G Fig. : I Fig. 3: / " - / " Data Sheet:

16 North merican FWP 700V: FWP Specifications Description: North merican style stud-mount fuses. Dimensions: See Dimensions illustrations. Ratings: Volts: 700Vac/dc mps: IR: 00k RMS Sym. gency Information: CE, UL Recognition JFHR.E91958 FWP-_ (5-100, ), JFHR.E51 FWP-_ (15-00) & CS Component cceptance file Class 1-30, (53787) on Electrical Characteristics 1.5 K Total Clearing I t The total clearing I t at rated ) voltage and at power factor of 15% are given in the electrical characteristics. For other 1) voltages, the clearing I t is 0. found by multiplying by correction factor, K, given as 0.15 a function of applied working 31 voltage, E g, (rms). 13 3) Eg ) Range ) Range 3) Range Dimensions - in mp Range Fig. C D E F G H I See Drawing See Drawing 1mm = / 1 = 5.mm Fig. 1: D E C F G J H Fig. : Fig. 3: rc Voltage This curve gives the peak arc 1. voltage, U L, which may appear across the fuse during its operation as a 8 function of the applied working voltage, E g, (rms) at 5 a power factor of 15%. Power Losses 3 Watts loss at rated current is given in the electrical characteristics. The curve allows the calculation of the 0.8 power losses at load 0. currents lower than the rated current. The correction factor, 0. K p, is given as a function of the RMS load current, I b, in 0. % of the rated current. 0.1 I b Catalog Numbers % Electrical Characteristics Rated I t ( Sec) Catalog Current Clearing Watts Numbers RMS-mps Pre-arc at 700V Loss FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP FWP Watts loss provided at rated current. See accessories on page 11. Features and enefits Excellent DC performance Low arc voltage and low energy let-through (I t) Superior cycling capability Data Sheet: 7001 U L 1) ) E g ) Range ) & Range Kp Typical pplications DC Common bus DC Drives Power converters/rectifiers Reduced voltage starters

17 North merican FWP 700V: FWP 5-30(): 700V Virtual Pre-rcing Time In Seconds FWP-5 FWP-10 FWP-15 FWP-0 FWP-5 FWP Peak Let-Through Curve Prospective Current In mps RMS FWP () & (): 700V Virtual Pre-rcing Time In Seconds FWP-35 FWP-0 FWP-50 FWP-0 FWP-70 FWP-80 FWP-90 FWP-100 FWP-700 FWP-800 FWP-900 FWP-1000 FWP Peak Let-Through Curve Prospective Current In mps RMS FWP-100 FWP-1000 FWP-800 FWP-700 FWP-30 FWP-5 10 FWP-0 FWP-15 FWP-10 FWP Prospective Short-Circuit Current FWP-100 FWP-70 FWP-0 FWP-50 FWP-0 FWP Prospective Short-Circuit Current Data Sheet: Data Sheet:

18 North merican FWP 700V: FWP : 700V 10 FWP-150 FWP-00 FWP-300 FWP-00 FWP-00 Virtual Pre-rcing Time In Seconds Prospective Current Current In In mperes mps RMS RMS Peak Let-Through Curve FWP-00 FWP-00 FWP-300 FWP-00 FWP Prospective Short-Circuit Current Symmetrical RMS Data Sheet:

19 North merican FWJ 1000V: FWJ Specifications Description: North merican style stud-mount fuses. Dimensions: See Dimensions illustration. Ratings: Volts: 1000Vac/800Vdc mps: IR: 5k (35-00) 100k (50-000) 800Vdc (35-00, 50-00) gency Information: CE, UL Recognition JFHR8.E91958 on only. Electrical Characteristics Total Clearing I t 1.5 The total clearing I K t at rated voltage and at power factor of 15% are given in the electrical characteristics. For other voltages, the clearing I t is found by multiplying by correction factor, K, given as 0. a function of applied working voltage, E g, (rms) Eg 1000 Dimensions - in mp Range Fig. C D E F G H I mm = / 1 = 5.mm Fig. 1: D E C H rc Voltage This curve gives the peak arc voltage, U L, which may appear across the fuse during its operation as a function of the applied working voltage, E g, (rms) at a power factor of 15%. Power Losses Watts loss at rated current is given in the electrical characteristics. The curve allows the calculation of the power losses at load currents lower than the rated current. The correction factor, K p, is given as a function of the RMS load current, I b, in % of the rated current Kp U L E g I b Catalog Numbers % Electrical Characteristics Rated It ( Sec) Catalog Current Clearing Watts Numbers RMS-mps Pre-arc at 1000V Loss FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ FWJ Watts loss provided at rated current. See accessories on page 11. G F J Features and enefits Excellent DC performance Low arc voltage and low energy let-through (I t) Low watts loss Superior cycling capability Data Sheet: 7007 Typical pplications DC Common bus DC Drives Power converters/rectifiers Reduced voltage starters 139

20 North merican FWJ 1000V: FWJ 35-00: 1000V Virtual Pre-rcing Time In Seconds FWJ-0 FWJ-50 FWJ-0 FWJ-70 FWJ-80 FWJ-90 FWJ-100 FWJ-15 FWJ-150 FWJ Prospective Current In mps RMS FWJ-00 FWJ-50 FWJ-300 FWJ-350 FWJ-00 FWJ-500 FWJ-00 FWJ : 1000V Virtual Pre-rcing Time In Seconds FWJ-800 FWJ-1000 FWJ-100 FWJ-100 FWJ-100 FWJ-1800 FWJ Data Sheet: Prospective Prospective Current Current In mperes in mpsrms Peak Let-Through Curve FWJ-000 FWJ-1800 FWJ-100 FWJ-100 FWJ-150 FWJ-1000 FWJ-00 FWJ-800 FWJ-00 FWJ-500 FWJ-350 FWJ-300 FWJ-50 FWJ-00 FWJ-175 FWJ-150 FWJ-15 FWJ-100 FWJ-90 FWJ-80 FWJ-70 FWJ-0 FWJ-50 FWJ Prospective Short-Circuit Current Symmetrical RMS Data Sheet:

21 North merican Fuse ccessories Fuse ases (locks) Modular Style ussmann offers a comprehensive line of fuse bases that provide the user with design and manufacturing flexibility. Two identical half bases make up a ussmann modular fuse base. These split units can be panel mounted any distance apart to accommodate any length fuse. Stud Type (Not sold in pairs) The simpler design is the C58 Series modular fuse base. With this design, the fuse terminal and cable (with termination) are mounted on the same stud, minimizing labor needed for installation. The stud type base is available in the configuration shown in the table below. Catalog Max Fuse Stud Stud Dia. Number mp Rating Height (in) & Threads C C C C C C58 Series Stud Type Connector Type ussmann also offers a modular style fuse base that utilizes a tin-plated connector (for wire termination and heat dissipation) and a plated-steel stud (for fuse mounting). The connector type fuse base is available in the configurations shown below. Consult ussmann for additional product details. Modular Max Max Fuse Data Sheet ase Style Voltage mp Rating Number 1S S S S H-0xxx H-1xxx H-xxx H-3xxx Refer to page 30 for H style holders. S Style Connector Type Fixed Center ase Style ussmann offers a comprehensive line of fixed mount style fuse bases under the trademark TRON rectifier fuse blocks. The cable and fuse connections are similar to the stud type fuse base both are mounted on the same stud. Consult ussmann for complete product details. Fixed Center 11