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Siemens 3VA1225-4EF42-0KH0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1225-4EF42-0KH0 SENTRON MCCB, 250 A, 4-Pole, 121

MPN3VA1225-4EF42-0KH0

Siemens SENTRON molded case circuit breaker, 3VA1225-4EF42-0KH0, 250 A at 40 °C, 4-pole, 121 kA at 240 V, 70 x 140 x 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

3VA1225-4EF42-0KH0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
Basic switch (supplied) ref.3VA12254EF420AA0
Integrated auxiliary / alarm switch ref.3VA9988-0AB12
3VA1225-4EF42-0KH0 — 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
3VA1225-4EF42-0KH0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1225-4EF42-0KH0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1225-4EF42-0KH0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerYes
Trip indicatorYes
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts3
3VA1225-4EF42-0KH0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1225-4EF42-0KH0 — 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 Siemens 3VA1225-4EF42-0KH0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, carrying 250 A continuously at 40 °C and delivering a 121 kA interrupting capacity at 240 V.

Compared to the smaller-frame 3VA1110-5ED36-0AC0, this 3VA1225-4EF42-0KH0 steps up from a 100 A frame to a 250 A frame and from 3-pole to 4-pole, with a significantly higher interrupting rating (121 kA vs 36 kA at 240 V). The physical footprint grows from 70 x 76 x 130 mm to 70 x 140 x 158 mm, so a panel originally laid out for the 3VA1110 cannot accept this breaker without reworking the busbar and mounting holes.

The 70 mm depth fits standard 800 mm deep enclosures; the 140 mm width and 158 mm height require a 4-pole breaker cutout.

Frequently asked questions

Where can I buy 3VA1225-4EF42-0KH0?

Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.

What are the key ratings for 3VA1225-4EF42-0KH0?

Rated 250 A continuous at 40 °C, 4-pole, with a 121 kA interrupting capacity at 240 V and 75.6 kA at 415 V. The insulation voltage is rated 800 V.

What is the closest functional second-source for 3VA1225-4EF42-0KH0?

The 3VA1110-5ED36-0AC0 is a smaller-frame 3-pole breaker (100 A, 36 kA at 240 V) and does not drop into the same panel without rewiring — different frame size, pole count, and interrupting rating.

MPN
3VA1225-4EF42-0KH0