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Siemens 3VA1225-4FF42-0CE0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1225-4FF42-0CE0 SENTRON MCCB, 125 A, 4-Pole, 121

MPN3VA1225-4FF42-0CE0

Siemens SENTRON molded case circuit breaker, 3VA1225-4FF42-0CE0, 125 A, 4-pole, line protection, with undervoltage release, 121 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

3VA1225-4FF42-0CE0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA12254FF420AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AA12
3VA1225-4FF42-0CE0 — 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 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 V17 kA
Breaking capacity at 690 V11.9 kA
Power loss, max.59.5 W
3VA1225-4FF42-0CE0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1225-4FF42-0CE0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1225-4FF42-0CE0 — Accessories & Functions
ParameterValue
Undervoltage releaseYes
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts4
3VA1225-4FF42-0CE0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1225-4FF42-0CE0 — 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

Breaking capacity drops with system voltage: 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V — so verify the available fault current at your service voltage before committing the BOM line. That 250 A frame rating means this breaker can be applied in a panel with ambient up to 50 °C without derating the main conductors.

Built-in undervoltage release

If line voltage drops below the release threshold, the breaker trips, protecting downstream loads from brownout damage. No separate UVR module to wire in; it's factory-fitted. The auxiliary switch complement is 4 HQ switches, giving status feedback for remote monitoring or PLC inputs.

Frequently asked questions

Does 3VA1225-4FF42-0CE0 have an undervoltage release?

Yes, it includes a factory-fitted undervoltage release (UVR) as part of the auxiliary release design.

MPN
3VA1225-4FF42-0CE0