3VT1 Molded Case Circuit Breakers up to 160 A

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Catalog Technical Information VT Molded Case Circuit Breakers up to 6 A / General data / Circuit breakers Switch disconnectors Accessories and Components /6 Auxiliary switches auxiliary trip units /7 Manual/motorized operating mechanisms /9 Residual current devices / Connecting accessories / Mounting accessories VT Molded Case Circuit Breakers up to 6 A / Circuit breakers Switch disconnectors Accessories and Components /6 Trip units / Auxiliary switches /4 Auxiliary trip units / Rotary operating mechanisms /8 Motorized operating mechanism /4 Insulating barriers and terminal covers /6 Residual current devices Project Planning Assistance /9 Dimensional drawings Siemens LV 6 4

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Catalog General data Overview Versions and accessories Connecting sets 4 6 7 Circuit breaker 9 9 8 8 Rotary operating mechanism 4 NSO_8b 7 8 9 6 7 6 4 4 6 7 8 9 VT circuit breaker Circular conductor terminal Front connection Rear connection Auxiliary conductor terminal Front connecting bus with increased pole spacing Insulating barriers Laterally mounted motorized operating mechanism Shunt trip unit Undervoltage trip unit 4 6 7 8 9 Adapter to install on mm DIN rail Lockingtype lever Signal switch Auxiliary switch Mechanical parallel switching Mechanical interlocking Front manual operating mechanism Front manual operating mechanism Lateral manual operating mechanism (right) Lateral manual operating mechanism (left) Non lockable knob 4 6 7 8 9 Coupling driver Telescopic extension shaft Lockable knob Lockable knob Coupling driver Extension shaft Extension Cable Residual current device (RCD) module Connection set for RCD, short Connection set for RCD, long / Siemens LV 6 4

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Catalog Overview Circuit breaker Circuit breaker, -/4-pole versions The - or 4-pole versions of the circuit breakers include: connecting sets (box terminals), for connecting Cu/Al cables ) with cross-sections of.... 9 mm (these terminals are connected to the circuit breaker) insulating barriers set of two mounting bolts (M x ) Selection and ordering data Circuit breakers Switch disconnectors Switch disconnector Switch disconnector, -/4-pole versions The - or 4-pole versions of the switch disconnectors include: connecting sets (box terminals), for connecting Cu/Al cables ) with cross-sections of.... 9 mm (these terminals are connected to the switch disconnector) insulating barriers set of two mounting bolts (M x ) Rated current I n Current setting of the inverse-time delayed overcurrent releases "L" I R Operating current of the instantaneous short circuit releases "I" I i DT Article No. PS*/ P. unit Weight per PU approx. A A A kg Circuit breakers with tripping characteristic L ) TM ), LI function, -pole with permanently fixed thermal overload trip unit, fixed short-circuit trip unit 4 4 6 VT74-DA6-AA unit.4 VT7-DA6-AA unit.4 6 6 VT76-DA6-AA unit.6 8 8 VT78-DA6-AA unit. 4 VT7-DA6-AA unit.47 VT7-DA6-AA unit.47 6 6 64 VT76-DA6-AA unit.47 TM, LI function, -pole + N, for unprotected N-conductor with permanently fixed thermal overload trip unit, fixed short-circuit trip unit 4 4 6 VT74-EA46-AA unit.6 VT7-EA46-AA unit.6 6 6 VT76-EA46-AA unit.6 8 8 VT78-EA46-AA unit.6 4 VT7-EA46-AA unit.6 VT7-EA46-AA unit.6 6 6 64 VT76-EA46-AA unit.6 TM, LIN function, 4-pole, for protected N-conductor, Permissible load of N pole is % with permanently fixed overload trip unit, fixed short-circuit trip unit 4 4 6 VT74-EH46-AA unit.6 VT7-EH46-AA unit.6 6 6 VT76-EH46-AA unit.6 8 8 VT78-EH46-AA unit.6 4 VT7-EH46-AA unit.6 VT7-EH46-AA unit.6 6 6 64 VT76-EH46-AA unit.6 ) For other connection methods, use connecting sets, see page / ) See pages /6 (-pole) and / (4-pole) ) TM = Thermal-magnetic trip unit. * You can order this quantity or a multiple thereof. Siemens LV 6 4 /

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Catalog Circuit breakers Switch disconnectors Rated current I n Current setting of the inverse-time delayed overcurrent releases "L" I R Operating current of the instantaneous short circuit releases "I" I i DT Article No. PS*/ P. unit Weight per PU approx. A A A kg Circuit breakers with tripping characteristic D ) TM, LI function -pole with adjustable thermal overload trip unit, adjustable short-circuit trip unit 6.... 6 6... 4 VT7-DC6-AA unit.48 6...... VT7-DC6-AA unit.48...... 7 VT79-DC6-AA unit.4... 6... VT7-DC6-AA unit.47 4... 4... 4 VT74-DC6-AA unit.8 4...... VT7-DC6-AA unit.4 6... 6... 6 VT76-DC6-AA unit.6 8 6... 8 4... 8 VT78-DC6-AA unit.6 8...... VT7-DC6-AA unit.47... 6... VT7-DC6-AA unit.47 6... 6 8... 6 VT76-DC6-AA unit.7 TM, LI function -pole +N, for unprotected N-conductor with adjustable thermal overload trip unit, adjustable short-circuit trip unit 6.... 6 6... 4 VT7-EC46-AA unit.6 6...... VT7-EC46-AA unit.6...... 7 VT79-EC46-AA unit.6... 6... VT7-EC46-AA unit.6 4... 4... 4 VT74-EC46-AA unit.6 4...... VT7-EC46-AA unit.6 6... 6... 6 VT76-EC46-AA unit.6 8 6... 8 4... 8 VT78-EC46-AA unit.6 8...... VT7-EC46-AA unit.6... 6... VT7-EC46-AA unit.6 6... 6 8... 6 VT76-EC46-AA unit.6 TM, LIN function, 4-pole, for protected N-conductor, Permissible load of N pole is % with adjustable thermal overload trip unit, adjustable short-circuit trip unit 6.... 6 6... 4 VT7-EJ46-AA unit.6 6...... VT7-EJ46-AA unit.6...... 7 VT79-EJ46-AA unit.6... 6... VT7-EJ46-AA unit.6 4... 4... 4 VT74-EJ46-AA unit.6 4...... VT7-EJ46-AA unit.6 6... 6... 6 VT76-EJ46-AA unit.6 8 6... 8 4... 8 VT78-EJ46-AA unit.6 8...... VT7-EJ46-AA unit.6... 6... VT7-EJ46-AA unit.6 6... 6 8... 6 VT76-EJ46-AA unit.6 ) See pages /6 (-pole) and / (4-pole) /4 Siemens LV 6 4 * You can order this quantity or a multiple thereof.

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Catalog Rated current I n Current setting of the inverse-time delayed overcurrent releases "L" IR Operating current of the instantaneous short circuit releases "I" I i Circuit breakers Switch disconnectors DT Article No. PS*/ P. unit Weight per PU approx. A A A kg Circuit breakers, for short-circuit protection only (tripping characteristic N ) ), for starter combination TM, I function, -pole without overload trip unit, with adjustable short-circuit trip unit 6... VT7-DB6-AA unit.4 4 4... 4 VT74-DB6-AA unit.4... VT7-DB6-AA unit.48 6 6... 6 VT76-DB6-AA unit.48 8 8 4... 8 VT78-DB6-AA unit.48... VT7-DB6-AA unit. 6... VT7-DB6-AA unit.9 6 6 8... 6 VT76-DB6-AA unit.48 TM, I function, -pole +N, for unprotected conductors without overload trip unit, with adjustable short-circuit trip unit 6... VT7-EB46-AA unit.6 4 4... 4 VT74-EB46-AA unit.6... VT7-EB46-AA unit.6 6 6... 6 VT76-EB46-AA unit.6 8 8 4... 8 VT78-EB46-AA unit.6... VT7-EB46-AA unit.6 6... VT7-EB46-AA unit.6 6 6 8... 6 VT76-EB46-AA unit.6 TM, I function, 4P, for protected N conductor, Permissible load of N pole is % without overload trip unit, with adjustable short-circuit trip unit 6... VT7-EG46-AA unit.6 4 4... 4 VT74-EG46-AA unit.6... VT7-EG46-AA unit.6 6 6... 6 VT76-EG46-AA unit.6 8 8 4... 8 VT78-EG46-AA unit.6... VT7-EG46-AA unit.6 6... VT7-EG46-AA unit.6 6 6 8... 6 VT76-EG46-AA unit.6 Circuit breakers with tripping characteristic M ), for motor protection TM, LI function, -pole with adjustable thermal overload trip units, fixed short-circuit trip units 6.... 6 6 VT7-DM6-AA unit.48 6... VT7-DM6-AA unit.48... VT79-DM6-AA unit.4... VT7-DM6-AA unit.4 4... 4 4 VT74-DM6-AA unit.4 4... VT7-DM6-AA unit.4 6... 6 6 VT76-DM6-AA unit.6 8 6... 8 8 VT78-DM6-AA unit.9 8... VT7-DM6-AA unit.47 Switch disconnectors Switch disconnector, without overload protection, without short circuit protection 6 -pole VT76-DE6-AA unit. 6 4-pole VT76-EE46-AA unit.6 ) See page /6 (-pole) ) See pages /6 and / * You can order this quantity or a multiple thereof. Siemens LV 6 4 /

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Catalog - Accessories and Components Overview Auxiliary switches Auxiliary trip units Circuit breakers can be equipped with auxiliary switches, alarm switches, shunt trip units, undervoltage trip units. Shunt trip units can trip the circuit breaker from a remote location. A control supply voltage is required. An undervoltage trip unit trips the circuit breaker automatically when the circuit voltage drops below 7 % U e. The undervoltage trip unit protects motors and other equipment in case of undervoltage. A control supply voltage is required. Selection and ordering data Rated control supply voltage U s DT Article No. PS*/ P. unit Weight per PU approx. kg AC /6 Hz or DC Auxiliary switches and alarm switches Auxiliary switches for signalling the state of the main contacts AC/DC 6... V VT9-AB unit. AC/DC... 6 V VT9-AB unit. Alarm switches for signalling the tripping of the circuit breaker by an trip unit AC/DC 6... V VT9-AH unit. AC/DC... 6 V VT9-AH unit. Shunt trip units Shunt trip units can trip the circuit breaker from a remote location. DCV VT9-SB unit. AC/DC 4, 48 V VT9-SC unit, AC, V/DC, V VT9-SD unit. AC, 4 V/DC V VT9-SE unit. Undervoltage trip units Undervoltage trip units trip the circuit breaker automatically when the circuit voltage drops below 7 % Ue AC 4, 48 V VT9-UC unit. AC, V VT9-UD unit. AC, 4 V VT9-UE unit. DC 4, 48 V VT9-UU unit. DC, V VT9-UV unit. /6 Siemens LV 6 4 * You can order this quantity or a multiple thereof.

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Catalog - Accessories and Components Overview Rotary operating mechanisms The rotary operating mechanism must be combined from the following parts: For rotary operation of the circuit breaker: - VT9-HE../HF.. knob For operation through the switchgear cabinet door: - VT9-HE../HF.. knob - VT9-HG../HH.. coupling driver - VT9-HJ.. extension shaft, Manual/motorized operating mechanisms For operating through side panel of switchgear cabinet (lateral operation): - VT9-HE../HF.. knob - VT9-HG../HH.. coupling driver - VT9-HJ.. extension shaft Mechanical interlocking and parallel switching The mechanical interlocking must be combined from the following parts: - x VT9-HA/HB.. rotary operating mechanisms (cannot be used with lateral operation) - x VT9-HE/HF.. knobs (standard) or x VT9-HE/HF.. knob (parallel switching) Selection and ordering data Version Color DT Article No. PS*/ P. unit Weight per PU approx. kg Rotary operating mechanisms Rotary operating mechanism not lockable gray VT9-HA unit.79 lockable with padlock gray VT9-HA unit. lockable with padlock yellow VT9-HB unit.79 for lateral operation, mounted on the left side, not lockable for lateral operation, mounted on the right side, not lockable Knob gray VT9-HC unit.7 gray VT9-HD unit.7 not lockable black VT9-HE unit.9 lockable with padlock black VT9-HE unit. lockable with padlock red VT9-HF unit.9 Coupling driver for door-coupling operating mechanism (with defeat mechanism) Additionally requires VT9-HE or VT9-HE black knob degree of protection IP4 black VT9-HG unit.4 degree of protection IP66 black VT9-HG unit.98 Additionally requires VT9-HF red knob degree of protection IP4 yellow VT9-HH unit.4 degree of protection IP66 yellow VT9-HH unit.98 Extension shaft length mm, can be shortened VT9-HJ unit. length 99... mm, telescopic VT9-HJ unit.9 * You can order this quantity or a multiple thereof. Siemens LV 6 4 /7

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Catalog - Accessories and Components Manual/motorized operating mechanisms Mechanical interlocking Version Color DT Article No. PS*/ P. unit Weight per PU approx. kg The mechanical interlocks additionally require the following parts: x VT9 -HA../HB.. rotary operating mechanisms or x VT9 -HE/HF.. knobs Mechanical interlocking VT9-8LA unit.89 Mechanical interlocking for parallel switching VT9-8LB unit.9 Rated control supply voltage U s DT Article No. PS*/ P. unit AC /6 Hz or DC Motorized operating mechanism Laterally mounted motorized operating mechanism For a detailed description see page /8. Weight per PU approx. kg AC/DC4V VT9-MA unit.9 AC/DC48V VT9-MB unit.9 AC/DCV VT9-MD unit.9 AC V/DC V VT9-ME unit.9 /8 Siemens LV 6 4 * You can order this quantity or a multiple thereof.

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Catalog - Accessories and Components Selection and ordering data Circuit breakers for system protection, only for TM ), starters, disconnectors Residual current devices RCD modules Rated current I N Residual current I Δn, adjustable Delay time t d, adjustable Rated operational DT Article No. PS*/ voltage U e P. unit Weight per PU approx. A A s VAC kg 4-pole 6. instantaneous 8... 44 VT96-GA4 unit.77......... 4-pole 6. instantaneous 8... 44 VT96-GB4 unit.77 Accessories for RCD modules Connection set, short -pole VT9-GY unit.49 4-pole VT9-GY4 unit.64 Connection set, long -pole VT96-GY unit.4 4-pole VT96-GY4 unit.66 ) Thermal-magnetic * You can order this quantity or a multiple thereof. Siemens LV 6 4 /9

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Catalog - Accessories and Components Connecting accessories Selection and ordering data Version Terminals for fixed-mounted circuit breakers Connecting set for -pole version Terminals for front connection set = units Conductor cross-sections S mm Type of connection -- Cu/Al busbars, cable lugs DT Article No. PS*/ P. unit Weight per PU approx. kg VT9-4TA unit. Terminals for circular conductors x... Cu/Al cable VT9-4TF unit,4 set = units Set includes a terminal cover, degree of protection IP Terminals for rear connection set = units Rotation in 4-degree increments Auxiliary conductor terminals.....; 4...6 Cu/Al busbars, cable lugs Cu flexible conductors VT9-4RC unit.79 VT9-4TN unit. Front connection bars Increases pole spacing set = units Cu/Al busbars, cable lugs VT9-4ED unit.8 Terminals for 4-pole version Terminal for front connection set = unit For 4th pole (to be used with VT9-4TA connecting set) -- Cu/Al busbars, cable lugs VT9-4TA unit. Terminals for circular conductors x... Cu/Al cable VT9-4TF4 unit, set = 4units Set includes a terminal cover, degree of protection IP Terminal for rear connection set = unit For 4th pole (to be used with VT9-4RC connecting set) Cu/Al-busbars, cable lugs VT9-4RC unit.8 Auxiliary conductor terminals For 4th pole (to be used with VT9-4TN connecting set).....; 4...6 Cu flexible conductor VT9-4TN unit. / Siemens LV 6 4 * You can order this quantity or a multiple thereof.

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Catalog - Accessories and Components Selection and ordering data Mounting accessories Accessories Description DT Article No. PS*/ P. unit -pole version Insulating barriers for circuit breakers Included in the scope of supply of the circuit breaker or switch disconnector In case of feed-in from below (power supply connected to terminals, 4, 6), it is necessary to install these barriers on the bottom side For more information, see page /4. Weight per PU approx. VT9-8CE unit. kg Terminal protection cover, degree of protection IP Increases degree of protection of the connection point to degree of protection IP, e.g. when used with cable lugs. -pole VT9-8CA unit.9 4-pole VT9-8CA4 unit.8 Locking devices for toggle levers Enables locking of circuit breaker or switch disconnector in "switched off manually" position Locking is possible using a padlock with a shank diameter of up to 4 mm. VT9-HL unit. 4-pole version Insulating barrier for circuit breakers Included in the scope of supply of circuit breaker or switch disconnector In case of feed-in from below, (power supply connected to terminals, 4, 6, N), it is necessary to install these barriers on the bottom side For more information, see page /. VT9-8CE unit. Terminal cover, degree of protection IP Increases the degree of protection of the connecting point to degree of protection IP, e.g. when used with cable lugs VT9-8CA4 unit.8 -pole/4-pole version For mounting on a mm standard DIN mounting rail and RCD For dimensions, see page /46. VT9-4PP unit.6 Extension cable for motorized operating mechanism VT9-MF unit.6 * You can order this quantity or a multiple thereof. Siemens LV 6 4 /

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information Design Circuit breakers Switch disconnectors Installation and connection Main circuit The main circuit is connected with Cu or AI busbars, cables, and possibly cables with cable lugs. For further connecting options, connecting sets can be used (see page /). Generally, conductors from the power supply are connected to input terminals,,, (N) and conductors from the load to terminals, 4, 6, (N). It is possible to reverse the current flow inside the unit (i. e. infeed from below) without reducing the rated short-circuit ultimate breaking capacity I cu. In case of infeed from below, the units must additionally be fitted with VT9-8CE insulating barriers on the side of terminals, 4, 6 (see pages /4 and /). We recommend painting the connection busbars. Input and output connectors/busbars must be mechanically reinforced to avoid transferring electrodynamic forces to the circuit breaker during short-circuiting. The power circuit must be connected in such a way that the deionizing space of the circuit breaker/switch disconnector is not obstructed (see pages /4 and /). Recommended cross-section of cables, busbars and flexibars Rated Conductor cross-section S Busbars W x H current I n Solid Stranded Solid Cu AI Cu AI A mm mm mm mm 6, -- -- --, -- -- -- 4 -- -- -- 6 -- -- -- 4 -- -- -- 6 -- -- 6 6 -- -- 8 -- -- 6 x ; x 6 x 4; x 7 6 x 4; x 6 x ; x 6 6 7 9 6 x ; x 6 6 x 6; x 8 Auxiliary circuits Switches, shunt trip units or undervoltage trip units are connected to the terminals of the circuit breaker/switch disconnector using flexible Cu conductors with cross-section.... mm. Mechanical reinforcement of conductors for VT Ik ka 7 7 Conductor cross-sections of main terminals Article No. Maximum permitted current I max Maximum permissible conductor cross-sections S Cable type Sector-shaped conductor, stranded Sector-shaped conductor, solid Round conductor, stranded Round conductor, solid Max. width of busbars and cable lugs Dimensional drawings A mm mm mm mm mm See page -pole VT9-4TF 6 x )... x... x )... x... /9 VT9-4TA 6 6 VT9-4RC 6 6 /4 VT9-4TN /6...../4... 6 -- -- VT9-4ED 6 /4 4-pole VT9-4TF4 6 x )... x... x )... x... /44 VT9-4TA 6 6 VT9-4RC 6 6 /44 VT9-4TN /6...../4... 6 Required sleeves for cable end: Fine Strand: Yes, Strand: No. ) For cross-sections from mm up to mm only with tubular cable lugs for stranded conductors / Siemens LV 6 4

Technical specifications Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information Circuit breakers Switch disconnectors Article No. VT7..-..6-AA VT76-DE6-AA VT7..-..46-AA VT76-EE46-AA Description Circuit breakers Switch disconnectors Circuit breakers ) Switch disconnectors Number of poles 4 Standards EN 6 947-, IEC 947- EN 6 947-,IEC 947- EN 6 947-, IEC 947- EN 6 947-,IEC 947- Approval marks Rated current I n A 6... 6 ) -- 6... 6 ) -- Rated uninterrupted current I u A 6... 6 ) 6 6... 6 ) 6 Rated operational current I e A -- 6 -- 6 Rated operational voltage U e V max. AC 69, max. DC max. AC 69, max. DC 44 Rated frequency f n Hz /6 Rated impulse withstand voltage U imp kv 8 Rated insulation voltage U i V 69 Utilization category selectivity AC 69 V A -- A -- switching mode AC- (6... A) AC- (... 6 A) DC- A AC- A DC- A AC- (6... A) AC- (... 6 A) DC- A AC- A DC- A Rated short-time withstand current I cw /t -- ka/ s -- ka/ s Rated ultimate short-circuit breaking capacity (rms value) ) I cu /U e available, -- unavailable, + in preparation ) When reversing the circuit breaker connection (power supply connected to terminals, 4, 6, (N) output to terminals,,, (N)), I cu does not change. ) Ranges of rated currents vary according to characteristics, see page /7. ) Permissible load of N pole is %. ka/dc V (τ = max. ms) 6 ka/ac 69 V ka/ac V ka/ac 4 V 4 ka/ac V -- ka/dc 44V (τ = max. ms) 6 ka/ac 69 V ka/ac V ka/ac 4 V 4 ka/ac V Off-time at I cu ms 7 -- 7 -- Rated service short-circuit breaking capacity -- (rms value) I cs /U e ka/dc V (τ = max. ms) ka/ac 69 V 6 ka/ac V ka/ac 4 V ka/ac V -- ka/dc 44V (τ = max. ms) ka/ac 69 V 6 ka/ac V ka/ac 4 V ka/ac V Rated short-circuit making capacity (peak value) I cm /U e ka/ac 4 V,8 ka/ac 4 V ka/ac 4 V,8 ka/ac 4 V Losses per pole at I n = 6 A 4) W Mechanical endurance cycles Electrical endurance (U e = AC 4 V ) cycles 6 Frequency of switching cycles/hr Operating force N 6 Front side device protection IP4 Terminal protection IP Operating conditions Reference ambient temperature C 4 Ambient temperature range C -4... + Working environment dry and tropical climate Degree of pollution Max. elevation m Seismic resistance m/s g at 8... Hz Design modifications Front/rear connection / Plug-in version -- Withdrawable version -- Accessories Switches - auxiliary/relative/signal/leading / / / Shunt trip unit/with alarm switch Undervoltage trip unit/with leading switch/with alarm switch Front hand drive/lateral drive right/left Mechanical interlocking to the manual drive by Bowden wire / / / / / --/-- --/-- Motor. oper. mechanism/with oper. counter /-- /-- Locking-type lever 4) For I n <6A, see table page /4. -- Siemens LV 6 4 /

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information Circuit breakers Switch disconnectors Schematics Circuit breakers with accessories -pole version Switches or Auxiliary releases Main circuit Switches auxiliary alarm or aux. auxiliary auxiliary.y D VT9-U..Y C VT9-S. 6. 6.4..4 4. 4.4 TEST..4..4..4..4 J U< U or.y D.Y C 6. 6.VT9-AB..VT9-AB 4. 4.VT9-AB Q V I> 4 6 INSPECTION..VT9-AH. or.vt9-ab..vt9-ab..vt9-ab acc.comp. No. acc.c. No. 6 acc.c. No. acc.c. No. 4 acc.c. No. acc.c. No. acc.c. No. NSO_b Explanations J Q V TEST VT9-U. VT9-S. INSPECTION acc. c. acc. comp. VT circuit breaker main contacts trip-free mechanism test push button undervoltage trip unit shunt trip unit inspection push button accessory compartment accessory compartment TEST pushbutton Pressing the TEST pushbutton switches the circuit breaker/switch disconnector off and actuates the auxiliary switches. Power losses (per pole) Rated current I n Power loss P per pole of circuit breaker at maximum current A W 6 4 4 4 4 4 4 6 6 8 7 6 Indication of circuit breaker tripping TEST pushbutton When the circuit breaker was tripped by the overcurrent trip unit, the following symbol is displayed: " " Inspection push button Inspection push button by pressing you will simulate tripping of the circuit breaker by the overcurrent release, including actuating of the auxiliary switches and signal switch. Pressing requires a suitable instrument, such as wire with cross-section about mm. /4 Siemens LV 6 4

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information 4-pole version Circuit breakers Switch disconnectors Switches auxiliary auxiliary auxiliary VT9 -AB. VT9 -AB. VT9 -AB. 9. 9.4 8. 8.4 7. 7.4 J 9. 8. 7. acc.c. No. 9 acc.c. No. 8 acc.c. No. 7 Switches or Auxiliary starters Main circuit Switches auxiliary auxiliary auxiliary alarm or aux. auxiliary auxiliary J 6. 6.4 6. VT9 -AB...4. VT9 -AB. 4. 4.4 4. VT9 -AB..Y.Y D VT9 -U. D U<.Y or.y C VT9 -S. C U Q N T I> N 4 6 TEST V INSPECTION..4..4 acc.c. No. 6 acc.c. No. acc.c. No. 4 acc.comp. No. acc.c. No. acc.c. acc.c.. VT9 -AH. or. VT9 -AB...4. VT9 -AB...4. VT9 -AB. NSO_b Explanations J Q T V TEST VT9-U. VT9-S. INSPECTION acc. c. acc. comp. VT circuit breakers main contacts thermomagnetic trip unit -pole +N ( poles protected, N-pole unprotected) 4-pole (all four poles protected) trip-free mechanism test pushbutton undervoltage trip unit shunt trip unit inspection push button accessory compartment accessory compartment Siemens LV 6 4 /

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Trip units Overview Trip units, -pole version Trip units are integrated in the circuit breakers. Tripping characteristics Circuit breakers are available with four types of tripping characteristics. They are designated with the letters: "L" - lines For protection of lines with low starting currents VT circuit breakers with characteristic "L" have a pre-set and fixed rated current value. The circuit breakers feature I n values in a standardized current range from 4 A to 6 A (see "Ranges of trip units and their possible settings"). Short-circuit trip units are fixed at 4 x I n. "D" - distribution For protection of lines and transformers VT circuit breakers with characteristic "D" have the option of setting to a reduced current in a range of approximately.7... I n. The circuit breakers feature I n values in a standardized current range from 6 A to 6 A (see "Ranges of trip units and their possible settings"). The short-circuit trip unit is adjustable. Setting values are shown in the table on page /7. "M" - motor For motor protection VT circuit breakers with characteristic "M" have the option of setting a reduced current in a range of approximately.7... I n. The circuit breakers feature I n values in a standardized series of currents from 6 A to A (see "Ranges of trip units and their possible setting"). The short-circuit trip unit is fixed at the value of x I n. See page /. Circuit breakers with characteristic "L": L I t NSO_ "M": t I L I I r "N" - short-circuit trip unit only VT circuit breakers with characteristic "N" have a short circuit trip unit only. They feature I n values in a standardized series of currents ranging from A to 6 A. The short-circuit trip unit is adjustable. The values are shown in the table on page /7. Article Numbers The article number of a circuit breaker depends on the rated current and on the tripping characteristics. For example: Motor protection with I n = A. The article number is: VT7-DM6-AA. Setting of tripping characteristics Time-dependent trip unit (thermal) L (for circuit breakers with characteristics "D" and "M"). The time-dependent trip unit for overload protection I r (instantaneous) is adjusted in a continuous range using the I r adjustment dial on the overload trip unit. The I r adjustment range is.7... I n. Time-independent trip unit (short-circuit trip unit) I (for circuit breakers with characteristics "D" and "N"). With an time-independent instantaneous trip unit (value of the short circuit current I i ), adjustment is possible within a continuous range. All values are shown in the table on page /7. NSO_48 "D": L I I t I r NSO_ "N": L I i I I t I i NSO_6 I /6 Siemens LV 6 4

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Derating in accordance with ambient temperature Trip units Rated Permissible load at current I n A + 7 C + 6 C +6 C + C + C + 4 C + C - ~ -4 C 6 4 4. 4.. 6 7 9 8 8. 8. 9 9.. 4 8 7 8 9. 6 4 4 4. 7 8 9 4 4 4 4 47 48 49 6 66 6 7 9 6 69 8 8 6 67 7 7 7 8 88 8 84 88 9 9 8 97 7 7 4 6 4 4 6 68 7 Current ranges of trip units and their possible settings at 4 C Rated VT7..-DA6-AA VT7..-DC6-AA VT7..-DM6-AA VT7..-DB6-AA current I n Overload Overload Overload Overload protection I r protection I r protection I r protection I r Short circuit protection I i (instantaneous) Short circuit protection I i (instantaneous) Short circuit protection I i (instantaneous) Short circuit protection I i (instantaneous) A A A A A A A A A 6 -- --,... 6 6... 4,... 6 6 -- -- -- -- 6...... 6... -- -- -- --...... 7... -- -- -- --... 6...... -- 6... 4 4 6... 4... 4... 4 4 --... 4 4...... 4... --... 6 6... 6... 6... 6 6 --... 6 8 8 6... 8 4... 8 6... 8 8 -- 4... 8 4 8...... 8... --...... 6... -- -- -- 6... 6 6 64... 6 8... 6 -- -- -- 8... 6 Current ranges of trip units and their possible settings at 4 C Rated current VT7..-EA46-AA VT7..-EC46-AA VT7..-EB46-AA I n Overload protection I r Short circuit protection I i (instantaneous) Overload protection I r Short circuit protection I i (instantaneous) Overload protection I r Short circuit protection I i (instantaneous) A A A A A A A 6 - --,... 6 6... 4 - - - -- 6...... - - - --...... 7 - - - --... 6... - 6... 4 4 6... 4... 4 -... 4 4...... -... 6 6... 6... 6 -... 6 8 8 6... 8 4... 8-4... 8 4 8...... -...... 6... - 6... 6 6 64... 6 8... 6-8... 6 Siemens LV 6 4 /7

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Trip units Characteristic "L", I n = 4,, 6, 8,,, 6 A t [s]......... Characteristic "D", I n = 6,, A t [s].... L I n = 4 6 A....... L I n = 6 A I NSO_49 x I n.. NSO_ x I n I Characteristic "D", I n =, 4,, 6, 8,,, 6 A t [s].... I n = 6 A....... Characteristic "M", I n = 6,, A t [s]......... L NSO_ x I n.. L I n = 6 A I NSO_ x I n I /8 Siemens LV 6 4

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Characteristic "M", I n =, 4,, 6, 8, A t [s].... I n = A....... L NSO_ x I n Characteristic "N", I n =, 4,, 6, 8,,, 6 A I Trip units t [s]. I n = 6 A NSO_4........ I x I n Siemens LV 6 4 /9

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Trip units, with tripping characteristic M class The tripping time of the -pole trip unit of VT circuit breakers with characteristic M at 7. I n corresponds to the tripping classes A, and according to EN 6947-4-. I Plate of the trip units with characteristic M IC_64 Rated current Article No. Class I n 6 A VT7-DM6-AA A A VT7-DM6-AA A A VT79-DM6-AA A A VT7-DM6-AA 4 A VT74-DM6-AA A VT7-DM6-AA 6 A VT76-DM6-AA 8 A VT78-DM6-AA A VT7-DM6-AA Trip units Setting I R and I i for circuit breakers with characteristic "D" Adjusting I R Adjusting I i I_896 9 Connection of -/4-pole VT circuit breakers in DC circuits DC DC + + 9 Installation positions 9 J Q 4 6 N Q N 4 6 NSO_8a Load Load Connection of P circuit breaker in DC circuit up to V DC Connection of 4P circuit breaker in DC circuit up to 44 V DC / Siemens LV 6 4

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Trip units, 4-pole version Trip units are integrated into the VT circuit breakers. It is not possible to deinstall or exchange the trip units. 4-pole circuit breakers are manufactured in the following versions: -pole +N (three poles protected, N-pole unprotected) 4-pole (all four poles protected) The permissible load of the N-pole is % I n. Tripping characteristics The circuit breakers are delivered with three types of tripping characteristics, designated by the following letters: "L" - lines For protection of lines with low starting currents VT circuit breakers with characteristic "L" have a fixed value of rated current I (without I n control). The circuit breakers feature I n values of standard current range 4... 6 A, see "Ranges of trip units and their possible setting". The short-circuit trip unit has a fixed setting to 4 x I n. Circuit breakers with characteristic "L" Trip units L I t NSO_ "D" I "D" - distribution For protection of lines and transformers VT circuit breakers with characteristic "D" can be set to a reduced current in the range of approx..7... I n. The circuit breakers feature I n values within a standard current range of 6... 6 A. Setting values are shown in the table on page /7. t I r L I "N" - short-circuit For protection against short circuits only VT circuit breakers with characteristic "N" have a short circuit trip unit only. They feature circuit breaker values within a standard current range of... 6 A. The short circuit trip unit is adjustable. The values are shown in the table on page /7. Article Numbers The article number of a circuit breaker depends on the rated current and on the tripping characteristics. For example: Protection of a circuit with I n = 4 A. The article number is VT74-EC46-AA. Setting of tripping characteristics Time-dependent trip unit (thermal) L (for circuit breakers with characteristics "D" and "M"). The timedependent trip unit for overload protection I r (instantaneous), is adjusted in a continuous range using the I r adjustment dial on the overload trip unit. The I r adjustment range is.7... I n. Time-independent instantaneous trip unit (short-circuit trip unit) I (for circuit breakers with characteristics "D" and "N"). With a time-independent instantaneous trip unit (value of the short circuit current I i ), adjustment is possible within a continuous range. All values are shown in the table on page /7. NSO_ "N" t L I i I I NSO_6 I i I Siemens LV 6 4 /

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Overview Auxiliary switches Auxiliary switches Location of switches in accessory compartments Auxiliary and alarm switches Function, name and location of switches Location of accessory compartments in a -pole VT circuit breaker/switch disconnector. Article No. Type Switch location Switch function VT9-AB VT9-AB VT9-AH VT9-AH Auxiliary switch Alarm switch Accessory compartment ),,, 4,, 6 ) Accessory compartment ) Signals the condition of the main contact of the circuit breaker/ switch disconnector Signals whether the circuit breaker was tripped by the trip unit ) In accessory compartment, a VT9-AB auxiliary switch and VT9-AH alarm switch cannot be used simultaneously. ) When one of accessory compartments 4, or 6 is already in use for auxiliary switches, a shunt trip unit or undervoltage trip unit cannot be installed additionally. Location of accessory compartments in a 4-pole VT circuit breaker/switch disconnector. When using one of the accessory compartments 4, or 6, neither a shunt trip unit nor an undervoltage trip unit can be installed. / Siemens LV 6 4

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Function Auxiliary switches Switching states (4-pole) Switching states (-pole) Accessory compartment... 9 Switching states of the circuit breaker NSO_9 Lever position Switched on Position of the main contacts VT9-AB VT9-AH VT9-UC/UD/UE.. VT9-SC/SD/SE.. Accessory compartment...6 Switching states of the circuit-breaker NSO_9 Lever position Switched on Position of the main contacts VT9-AB VT9-AH VT9-S... VT9-U... Switched off manually Switched off manually Switched off by the trip unit or INSPECTION button Switched off by the trip unit or INSPECTION button Switched off by auxiliary trip unit Switched off by auxiliary trip unit Switched off by TEST button Switched off by TEST button = contact open, = contact closed = contact open, = contact closed Technical specifications Article No. VT9-AB, VT9-AH Rated operational voltage U e V AC 6... V DC 6... V Rated insulation voltage U i V V Rated impulse withstand voltage U imp kv 4 kv Rated frequency f n Hz /6 Hz VT9-AB, VT9-AH AC... 6 V DC... 6 V Rated operational current I e /U e AC- 6 A/ V.4.... A/... 6 V AC- A/6 V, A/ V,. A/ V.4.... A/... 6 V DC-. A/ V. A/... 6 V DC-. A/6 V,. A/ V,. A/ V.4.... A/... 6 V Thermal current I th A 6 A. A Contacts arrangement Connector cross-section S mm.... Terminal protection (connected switch) IP Siemens LV 6 4 /

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Design Auxiliary trip units Auxiliary trip units The article number of the auxiliary trip unit depends on the rated operational voltage U e AC/DC 4/48 V AC / V, DC / V AC /4 V, DC V DC V Article No. VT9-SC VT9-SD VT9-SE VT9-SB Shunt trip unit Undervoltage trip unit Location of auxiliary trip unit U e Article No. AC/DC 4/48 V VT9-UC AC / V, DC / V VT9-UD AC /4 V, DC V VT9-UE The specific rated operational voltage of the shunt trip unit is set by jumpers located on the trip unit. The standard setting by the manufacturer is always to the value corresponding to the article number. Schematics L+ L+ C.Y U VT9-S. D.Y U< VT9-U. C.Y N- Shunt trip unit NSO_a D.Y NSO_6a N- Undervoltage trip unit One auxiliary trip unit can be installed in accessory compartment Technical specifications Article No. Rated operational voltage U e Rated frequency f n Input power at. U e AC DC Characteristics VT9-S. AC 4/48///4 V DC /4/48// V /6 Hz Time before switching off ms Continuous load yes Connection cross-section S,... mm VA W U.7 U e : circuit breaker must trip Terminal protection IP (connected trip unit) Location in accessory compartment no. Alarm switch - signals that the circuit breaker was switched off by the shunt trip unit Rated operational voltage U e AC V Rated insulation voltage U i V Rated impulse withstand voltage U imp 4 kv Rated frequency f n /6 Hz Rated operational current I e /U e A/AC V Thermal current I th 6 A Contact arrangement Article No. Rated operational voltage U e VT9-U. AC 4/48///4 V DC 4/48// V Rated frequency f n /6 Hz Input power at. U e AC VA DC W Characteristics U. U e : circuit breaker must trip U.8 U e : circuit breaker can be switched on Time before switching off ms Continuous load yes Connector cross-section S.... mm Terminal protection IP (connected trip unit) Location in accessory compartment no. Alarm switch - signals that the circuit breaker was switched off by the undervoltage trip unit Rated operational voltage U e AC V Rated insulation voltage U i V Rated impulse withstand voltage U imp 4 kv Rated frequency f n /6 Hz Rated operational current I e /U e A/AC V Thermal current I th 6 A Contact arrangement /4 Siemens LV 6 4

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Design Rotary operating mechanisms The rotary operating mechanism actuates the circuit breakers/switch disconnector when the operator turns the knob, e.g. in order to switch machines on and off. The modular concept of the operating mechanism allows simple mounting on the circuit breaker. Mounting can be done after having removed the accessory compartment cover. An attached drive can be sealed (with sealing wire). The drive and its accessories are ordered separately to match the requirements (see page /7). The rotary operating mechanism is mounted directly on the circuit breaker or switch disconnector. The coupling driver is fixed to the switchgear cabinet door and provides for degree of protection IP4 or IP66. The knob is mounted onto the rotary operating mechanism or onto the coupling driver. The extension shaft is supplied in two versions, standard (length mm - can be shortened) and telescopic (adjustable length 99... mm). It is fitted onto the rotary operating mechanism. The rotary operating mechanism makes it possible to actuate the circuit breaker: Operation from the front panel of the circuit breaker (Fig. ) VT9-HA/HB.. rotary operating mechanism + VT9-HE/HF.. knob Rotary operating mechanisms Operation through the switchgear cabinet door (Fig. ) VT9-HA/HB.. rotary operating mechanism + VT9-HJ.. extension shaft + VT9-HG/HH.. coupling driver + VT9-HE/HF.. knob Fig. : Rotary operating mechanism with extension shaft, coupling driver and knob Operation through the side wall of the switchgear cabinet (Fig. ) in left- or right-side designs of rotary operating mechanisms for lateral operation VT9-HD (right) or VT9 -HC (left) + VT9-HJ.. extension shaft + VT9-HG/HH.. coupling driver + VT9-HE/HF.. knob. Fig. : Rotary operating mechanism with knob Fig. : Lateral rotary operating mechanism with extension shaft, coupling driver and knob Enhanced safety for operator The rotary operating mechanism and knob allow operators to lock the circuit breaker into the "switched off manually" position. The rotary operating mechanism and lever can be locked with up to three padlocks with a shaft diameter up to 4 mm. Every coupling driver prevents the switchgear cabinet door from opening when the circuit breaker is switched on or if it was tripped. By means of the coupling driver it is possible to switch off this locking and to open the door. Locking of the switchgear cabinet door is also possible in the OFF mode of the circuit breaker. It is necessary to activate the locking by means of the knob on the coupling drive and to lock the hand drive arm. Two circuit breakers with rotary operating mechanism can also be provided with reciprocal mechanical interlocking or mechanical parallel switching (see page /7). Siemens LV 6 4 /

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Rotary operating mechanisms Features Article No. Description Color Permits operator to lock the circuit breaker in OFF mode Degree of Protection Switchgear cabinet door is locked when circuit breaker is switched on switched off manually and locked VT9-HA Rotary operating mechanism gray no -- -- -- -- VT9-HA Rotary operating mechanism gray yes -- -- -- -- VT9-HB Rotary operating mechanism yellow yes -- -- -- -- VT9-HC Rotary operating mechanism - lateral, gray no -- - -- -- left VT9-HD Rotary operating mechanism - lateral, gray no -- - -- -- right VT9-HE Knob black no -- -- -- -- VT9-HE Knob, lockable with padlock black yes -- -- -- -- VT9-HF Knob, lockable with padlock red yes -- -- -- -- VT9-HG Coupling driver black -- IP4 yes yes -- VT9-HH Coupling driver yellow -- IP4 yes yes -- VT9-HG Coupling driver black -- IP66 yes yes -- VT9-HH Coupling driver yellow -- IP66 yes yes -- VT9-HJ Extension shaft (can be shortened) -- -- -- -- -- VT9-HJ Extension shaft, telescopic -- -- -- -- -- 99... Length mm /6 Siemens LV 6 4

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Rotary operating mechanisms Mechanical interlockig and mechanical interlocking for parallel switching VT9-8LA mechanical interlocking VT9-8LB mechanical interlocking for parallel switching Mechanical interlocking make sure that two circuit breakers cannot trip simultaneously, but always just individually. Both circuit breakers may be switched off simultaneously. Interlocking can be used between two VT circuit breakers. Each circuit breaker must be furnished with a rotary operating mechanism at least one of them with a rotary operating mechanism and a knob (see page /). When using a mechanical interlocking it is required to comply with the dimensions shown in the figure and in the table. Mechanical interlocking for parallel switching are for simultaneous switching of two circuit breakers. Parallel switching can be used between two VT circuit breakers. Each circuit breaker must be furnished with a rotary operating mechanism and at least one of them with a knob (see page /). When using a mechanical interlocking for parallel switching it is required to comply with the dimensions shown in the figure and in the table. Dimensions mm X 87. or L 94. or 6 Dimensions mm X 7 or 87. or L to be determined L L X NSO_7 X Arrangement of circuit breakers/switch disconnectors with VT9-8LA mechanical interlocking Arrangement of circuit breakers/switch disconnectors with VT9-8LB mechanical interlocking for parallel switching NSO_9 NSO_6 NSO_8. or or. or Siemens LV 6 4 /7

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Design Motorized operating mechanism Motorized operating mechanism The motorized operating mechanism is an accessory to the circuit breaker/switch disconnector, by means of which it is possible to switch the circuit breaker or switch disconnector remotely on and off. The modular design of the motorized operating mechanism enables its simple attachment to the circuit breaker (also in addition to a rotary operating mechanism). The motorized operating mechanism is used for both remote and local control of VT -pole and 4-pole circuit breakers. The circuit breaker with attached motorized operating mechanism can be installed on a mounting plate or on a standard DIN mounting rail. The motorized operating mechanism is fastened by means of a bayonet mechanism to the circuit breaker. VT circuit breakers with motorized operating mechanism are intended for industrial, power engineering and infrastructure applications. The motorized operating mechanisms are for direct actuation of the circuit breaker, without a spring storage unit. The motorized operating mechanism can work in local or remote control mode. The local control mode is used, for instance, in case of loss of the control voltage. Local control of the circuit breaker is only accessible after lifting the transparent safety cover off the operating mechanism. This procedure locks the remote electrical control circuits. The lifted position of the cover can be indicated remotely. The circuit breaker is switched on and off by means of the control lever. After returning the safety cover to the original position, the operating mechanism is switched automatically into the remote control mode. After the safety cover was removed, it is possible to actuate an automatic mode selector switch. Under the transparent cover, there is a red LED. The lighting of the LED indicates a failure (failed on/off/wind-up operations). Electronic circuits of the motorized operating mechanism block erroneous control process, e.g. drive cycling after tripping of trip unit or shunt trip/undervoltage trip unit. Lateral operating mechanisms can be locked in "off position" of the circuit breaker by up to three padlocks with a shank diameter of max. 4 mm. The protective cover of the operating mechanisms can also be sealed. Motorized operating mechanism automatic operation presets The position of the main circuit breaker is indicated by the position of the circuit breaker driver lever under the transparent protective cover of the operating mechanism. The wound up position of the circuit breaker can also be signalled remotely. In the remote control mode, the circuit breaker is switched on and off by an ON and OFF pushbutton. The accessories for the motorized operating mechanism includes an VT9-MF extension cable. Symbol NSO_46 Description Switched on manually or by motorized operating mechanism electrically Switched off by trip unit, shunt trip unit, undervoltage trip unit or TEST pushbutton Switched off manually or by motorized operating mechanism electrically, wound up state Switch position Automatic operation preset Preset description N ) Automatic winding up is on Circuit breaker switching off to TRIP position By trip unit By auxiliary trip unit By TEST pushbutton Circuit breaker will be switched to OFF position The motorized operating mechanism switches the circuit breaker OFF automatically. Circuit breaker will be switched to ON position The motorized operating mechanism switches circuit breaker on when it receives an ON signal. N Automatic winding up is off The motorized operating mechanism stays in TRIP mode until it receives an OFF signal. The motorized operating mechanism switches circuit breaker on when it receives an ON signal. N Simultaneous winding up and switching on When receiving an ON signal the motorized operating mechanism switches the circuit breaker off and on again immediately. ) N The motorized operating mechanism is out of operation, the red LED is lit. ) Standard factory setting of the switch. ) Pressing the OFF pushbutton causes the motorized operating mechanism to wind up the circuit breaker to position only. /8 Siemens LV 6 4

Schematics MP control circuit Q L+ Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components Motorized operating mechanism ON OFF B Motor drive X 4 M P MP X 6 7 8 B HL HL HL HL4 N- MP control circuit, signaling NSO_6a Technical specifications Article No. Rated operational voltage U e VT9-M. AC 4/48// V DC 4/48// V Rated frequency f n /6 Hz Control pulse length for switching on 6 ms... ) for switching off 6 ms... ) Time for switching on < 7 ms ) Time for switching off < ms ) Frequency of cycles ON/OFF cycles/min Frequency of cycles-successive ON/OFF cycles Mechanical endurance cycles Power input AC VA DC W Starting current A, at AC/DC 4 V 6 A, at AC/DC 48 V 4 A, at AC/DC V A, at AC V/DC V Protection AC 4/48/ V; AC V DC 4/48/ V; DC V Article No. Number of conductors 8 Conductor cross section S. mm Conductor length SX44-7; SX4-7 SX4-7; SX-7 VT9-MF 6 cm ) The values depend on the motorized operating mechanism automatic operation preset, see pages / ff. Explanation of designations MP M P X B ON OFF Q HL HL HL HL4 VT9-M. motorized operating mechanism Motor Gearbox Connector for connection of control and signalling circuits recommended connection of control circuitsnot part of MP Pushbutton Pushbutton motorized operating mechanism circuit breaker remote failure signalling (unreliable making or breaking), permissible load max. W ) signalling of circuit breaker lever "wound up" position, permissible load max. W ) signalling of opening of the front safety cover of the operating mechanism, permissible load max. W ) signalling of extension of the operating mechanism locking bar, permissible load max. W ) ) Voltage on terminals, 6, 7, 8 is the same as U n of the motorized operating mechanism. Siemens LV 6 4 /9

Siemens AG 4 VT Molded Case Circuit Breakers up to 6 A Technical Information - Accessories and Components VT circuit breakers with motorized operating mechanism Circuit breaker switched off by motorized operating mechanism (OFF signal) Automatic operation presets no.,, Circuit breaker switched on by motorized operating mechanism (ON signal). Automatic operation presets no.,, Motorized operating mechanism Main contacts Auxiliary switch - NO contact NSO_6 Main contacts 7 Auxiliary switch - NO contact NSO_6 Auxiliary switch - NC contact 7 Auxiliary switch - NC contact t [ms] 6 t [ms] Recommended pulse durations for electrical switching Automatic operation no. Graph description HK > > > 6 6 IMP OFF IMP ON < 7 > NSO_64 Symbol HK NS IMP ON IMP OFF Description Main contacts Alarm switch Make pulse for motorized operating mechanism Break pulse for motorized operating mechanism Switched on NS t [ms] Switched off manually or electrically by motorized operating mechanism (wound up state) Automatic operation no. > > 6 > 6 IMP OFF IMP ON > NSO_6 HK < 7 NS t [ms] Automatic operation no. > > 6 > 6 IMP OFF IMP ON > NSO_66 HK < 7 NS t [ms] / Siemens LV 6 4