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Siemens 3VA1225-5GF42-0AB0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1225-5GF42-0AB0 SENTRON MCCB, 250 A, 4-Pole, Line

MPN3VA1225-5GF42-0AB0

Siemens SENTRON 3VA1225-5GF42-0AB0, molded case circuit breaker, 250 A, 4-pole, TM240 thermal-magnetic release, line protection design, interrupting capacity 187 kA at 240 V.

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

3VA1225-5GF42-0AB0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA12255GF420AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AA11
3VA1225-5GF42-0AB0 — Ratings
ParameterValue
Number of poles4
Rated operational voltage Ue (AC)690 V
Rated insulation voltage Ui800 V
Current at 40 °C250 A
Current at 45 °C250 A
Current at 50 °C250 A
Current at 55 °C243 A
Current at 60 °C237 A
Current at 65 °C230 A
Current at 70 °C223 A
Switching capacity classM
Breaking capacity at 240 V187 kA
Breaking capacity at 415 V121 kA
Breaking capacity at 440 V75.6 kA
Breaking capacity at 500 V30 kA
Breaking capacity at 690 V17 kA
Power loss, max.57 W
3VA1225-5GF42-0AB0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1225-5GF42-0AB0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1225-5GF42-0AB0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts2
3VA1225-5GF42-0AB0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1225-5GF42-0AB0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.20 000
Height158 mm
Width140 mm
Depth70 mm
Height (in)6.22 in
Width (in)5.51 in
Depth (in)2.76 in

Product details

It carries a TM240 thermal-magnetic release, meaning the thermal element tracks the load current continuously and the magnetic element trips instantaneously on a hard short.

Interrupting capacity and thermal derating

This MCCB's interrupting capacity drops as system voltage rises: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. That's typical for a high-interrupting frame — the 690 V figure still covers most industrial secondary-side faults. For selectivity studies, use the 415 V value as the worst-case for 400 V class systems. Above that, derate linearly: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, 223 A at 70 °C.

Footprint is 140 mm wide, 158 mm tall, 70 mm deep. If the panel is NEMA 12 or IP54 with no forced ventilation, account for that 57 W in the thermal budget.

Frequently asked questions

Where can I buy 3VA1225-5GF42-0AB0 and what is the lead time?

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

What is the interrupting capacity of this MCCB at 480 V?

At 440 V it is rated 75.6 kA, and at 500 V it is 30 kA. For a 480 V system, the 440 V figure is the conservative bound for coordination studies.

Does 3VA1225-5GF42-0AB0 include an undervoltage release or ground-fault monitoring?

No — it ships without an undervoltage release and without ground-fault monitoring. Those functions would need an external module or a different variant.

What is the thermal derating at 60 °C ambient?

At 60 °C the continuous rating is 237 A, down from 250 A at 50 °C. Derate further to 230 A at 65 °C and 223 A at 70 °C.

MPN
3VA1225-5GF42-0AB0