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Siemens 3VA1150-4EF32-0AH0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1150-4EF32-0AH0 SENTRON MCCB, 50 A, 121 kA at 240

MPN3VA1150-4EF32-0AH0

Siemens SENTRON 3VA1150-4EF32-0AH0, 3-pole molded case circuit breaker, 50 A rated, TM240 thermal-magnetic release, 121 kA interrupting capacity at 240 V AC.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3VA1150-4EF32-0AH0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA11504EF320AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AB12
3VA1150-4EF32-0AH0 — Ratings
ParameterValue
Number of poles3
Rated operational voltage Ue (AC)690 V
Rated insulation voltage Ui800 V
Current at 40 °C50 A
Current at 45 °C50 A
Current at 50 °C50 A
Current at 55 °C49 A
Current at 60 °C48 A
Current at 65 °C46 A
Current at 70 °C45 A
Switching capacity classS
Breaking capacity at 240 V121 kA
Breaking capacity at 415 V75.6 kA
Breaking capacity at 440 V52.5 kA
Breaking capacity at 500 V11.9 kA
Breaking capacity at 690 V11.9 kA
Power loss, max.14.6 W
3VA1150-4EF32-0AH0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1150-4EF32-0AH0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1150-4EF32-0AH0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorYes
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts3
3VA1150-4EF32-0AH0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1150-4EF32-0AH0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.20 000
Height130 mm
Width76.2 mm
Depth70 mm
Height (in)5.12 in
Width (in)3 in
Depth (in)2.76 in

Product details

Siemens 3VA1150-4EF32-0AH0 — SENTRON MCCB, 50 A, 121 kA IC

Rated current holds flat at 50 A from 40 °C through 50 °C ambient; it starts to derate above that — 49 A at 55 °C, 48 A at 60 °C, down to 45 A at 70 °C. That thermal curve matters for enclosed panels with limited airflow. Interrupting capacity drops with system voltage: 75.6 kA at 415 V, 52.5 kA at 440 V, 11.9 kA at 500 V and 690 V. The 121 kA at 240 V is the peak — typical for a 240/120 V delta or 277/480 V wye service entrance where the available fault current is high.

Integration — Panel Fit and Mounting

The 3VA1150-4EF32-0AH0 measures 70 mm deep, 76.2 mm wide, 130 mm tall — a standard MCCB footprint for DIN-rail or panel-mount installation in a distribution board. The 76.2 mm width (3 inches) is the pole pitch for a 3-pole breaker; it occupies three 1-inch module spaces on the rail.

Frequently asked questions

Where can I buy 3VA1150-4EF32-0AH0 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What is the interrupting capacity of 3VA1150-4EF32-0AH0 at 240 V?

The interrupting capacity is 121 kA at 240 V AC. It also carries 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V and 690 V.

What is the rated current of 3VA1150-4EF32-0AH0 at elevated ambient temperatures?

Rated current is 50 A from 40 °C through 50 °C. It derates to 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C.

MPN
3VA1150-4EF32-0AH0