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Siemens 3VA1225-6GF42-0BA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1225-6GF42-0BA0 SENTRON MCCB, 250 A, 4-Pole, TM24

MPN3VA1225-6GF42-0BA0

Siemens SENTRON 3VA1225-6GF42-0BA0, molded case circuit breaker, 4-pole, 250 A, TM240 thermal-magnetic release, line protection design, with undervoltage release.

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

3VA1225-6GF42-0BA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA12256GF420AA0
3VA1225-6GF42-0BA0 — 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 classH
Breaking capacity at 240 V220 kA
Breaking capacity at 415 V154 kA
Breaking capacity at 440 V75.6 kA
Breaking capacity at 500 V30 kA
Breaking capacity at 690 V17 kA
Power loss, max.59.5 W
3VA1225-6GF42-0BA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1225-6GF42-0BA0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1225-6GF42-0BA0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA1225-6GF42-0BA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1225-6GF42-0BA0 — 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

250 A MCCB with undervoltage release — current-production SENTRON

The interrupting capacity is voltage-dependent: 220 kA at 240 V, 154 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. That means at 415 V it clears a 154 kA fault without cascading upstream — a high-fault rating for a 250 A frame.

The breaker carries 250 A continuously up to 50 °C ambient. Above that it derates: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. If the panel ambient runs 60 °C, plan for 237 A max — the full 250 A is not available. Maximum power loss is 59.5 W at rated current. Factor that into the enclosure thermal budget — at 250 A the breaker dissipates nearly 60 W, which adds to the internal temperature rise.

If your BOM requires a communicating breaker or GF protection, this is not the variant.

Frequently asked questions

What is the interrupting capacity of this MCCB at 415 V?

154 kA at 415 V. That is the rated ultimate short-circuit breaking capacity (Icu) at that voltage level.

What does the TM240 release designation mean?

TM240 indicates a thermal-magnetic release with a 240 A rating setting. The breaker itself is rated 250 A continuous, and the TM240 release provides the overload and short-circuit protection curve.

Does this breaker include an undervoltage release?

Yes, it is equipped with an undervoltage release (UVR) as standard. The UVR trips the breaker when supply voltage drops below a set threshold, which is used for safety or sequence interlocking.

Where can I buy 3VA1225-6GF42-0BA0 and how is it quoted?

This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time.

MPN
3VA1225-6GF42-0BA0