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Siemens 3VM1225-4GE42-0AA0 — Molded Case Circuit Breakers (MCCB)

SENTRON 3VM1225-4GE42-0AA0 Molded Case Circuit Breaker, 250

MPN3VM1225-4GE42-0AA0
Active

SENTRON 3VM1225-4GE42-0AA0, 4-pole molded case circuit breaker, 250 A (40-50 °C), TM220 thermal-magnetic release, breaking capacity 121 kA at 240 V AC.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3VM1225-4GE42-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Product versionLine protection
3VM1225-4GE42-0AA0 — Ratings
ParameterValue
Number of poles4
Rated operational voltage Ue (AC)690 V
Current at 40 °C250 A
Current at 45 °C250 A
Current at 50 °C250 A
Current at 55 °C243.3 A
Current at 60 °C236.5 A
Current at 65 °C229.8 A
Current at 70 °C223 A
Switching capacity classS
Breaking capacity at 240 V121 kA
Breaking capacity at 415 V76 kA
Breaking capacity at 440 V53 kA
Breaking capacity at 500 V17 kA
Power loss, max.57 W
3VM1225-4GE42-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM220
Overcurrent protection functionLI
Ground-fault monitoringWithout
3VM1225-4GE42-0AA0 — Construction & Connection
ParameterValue
Main circuit connector arrangementFront connection
Protection class (IP), frontIP40
3VM1225-4GE42-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionNo
Auxiliary CO contacts0
3VM1225-4GE42-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VM1225-4GE42-0AA0 — Mechanical
ParameterValue
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 is the headline number here: 121 kA at 240 V AC, 76 kA at 415 V, 53 kA at 440 V, and 17 kA at 500 V. For DC systems the manual specifies separate values — the listing notes that the 3VA Molded Case Circuit Breaker Manual covers those curves. The overcurrent release is a TM220 thermal-magnetic type — fixed thermal pickup, magnetic trip adjustable. If you need those functions they go external or you step up to a different release variant.

That's a standard SENTRON 3VM footprint — it occupies the same panel cutout as other 4-pole frames in the family, so a swap from a 3VA1112-5EE32-0AA0 should drop in without re-drilling the mounting plate. Check the lug kit compatibility if you're reusing busbars; the termination pattern is the same across the 3VM platform but lug tunnel sizes differ with the frame rating.

MPN
3VM1225-4GE42-0AA0