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Siemens 3VA1225-4EF42-0JC0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1225-4EF42-0JC0 SENTRON MCCB, 250 A, 4-Pole, 121

MPN3VA1225-4EF42-0JC0

Siemens SENTRON 3VA1225-4EF42-0JC0, molded case circuit breaker, 4-pole, 250 A at 40 °C, breaking capacity 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, 11.9 kA at 690 V, depth 70 mm, width 140 mm, height 158 mm.

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

3VA1225-4EF42-0JC0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA12254EF420AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AA12
3VA1225-4EF42-0JC0 — 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.57 W
3VA1225-4EF42-0JC0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1225-4EF42-0JC0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1225-4EF42-0JC0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerYes
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts2
3VA1225-4EF42-0JC0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1225-4EF42-0JC0 — 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

The breaking capacity is what decides the fit: 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V. Thermal derating kicks in above 50 °C: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. It does not have an undervoltage release, ground-fault monitoring, or communication function — it is a straightforward line-protection device for distribution panels.

The 3VA1225-4EF42-0JC0 measures 70 mm deep, 140 mm wide, and 158 mm high. The 4-pole footprint and 250 A frame size mean it occupies a standard slot in a SENTRON distribution board; verify gland-plate cutout and phase-separation clearances per the manufacturer's mounting instructions.

Frequently asked questions

Where can I buy 3VA1225-4EF42-0JC0 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for a firm price and availability quote.

What is 3VA1225-4EF42-0JC0's listed depth?

The depth is 70 mm (2.76 in).

What is 3VA1225-4EF42-0JC0's listed width?

The width is 140 mm (5.51 in).

Will 3VA1225-4EF42-0JC0 drop into a panel specified around 5SQ2670-2YA63 without rewiring?

The 3VA1225-4EF42-0JC0 is a 4-pole MCCB with a shunt trip and two auxiliary switches; the 5SQ2670-2YA63 is a different form factor and accessory set. Panel fit and wiring cannot be assumed without comparing the mounting footprint, terminal arrangement, and auxiliary contact wiring — verify the mechanical and electrical interface before substitution.

MPN
3VA1225-4EF42-0JC0