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Siemens 3VA1125-3EF42-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1125-3EF42-0AA0 SENTRON MCCB, 25 A, 4-Pole, TM240

MPN3VA1125-3EF42-0AA0
Active

Siemens SENTRON 3VA series molded case circuit breaker, 3VA1125-3EF42-0AA0, 4-pole, 25 A rated at 40 °C, TM240 thermal-magnetic release, line protection design, 70 mm depth.

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

3VA1125-3EF42-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
3VA1125-3EF42-0AA0 — Ratings
ParameterValue
Number of poles4
Rated operational voltage Ue (AC)690 V
Rated insulation voltage Ui800 V
Current at 40 °C25 A
Current at 45 °C25 A
Current at 50 °C25 A
Current at 55 °C24 A
Current at 60 °C24 A
Current at 65 °C23 A
Current at 70 °C23 A
Switching capacity classN
Breaking capacity at 240 V75.6 kA
Breaking capacity at 415 V52.5 kA
Breaking capacity at 440 V32 kA
Breaking capacity at 500 V11.9 kA
Breaking capacity at 690 V11.9 kA
Power loss, max.8.5 W
3VA1125-3EF42-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeTM240
Overcurrent protection functionLI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA1125-3EF42-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typenut keeper kit on both ends
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA1125-3EF42-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA1125-3EF42-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA1125-3EF42-0AA0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.20 000
Height130 mm
Width101.6 mm
Depth70 mm
Height (in)5.12 in
Width (in)4 in
Depth (in)2.76 in

Product details

It carries a TM240 thermal-magnetic overcurrent release — the '240' indicates the fixed thermal trip threshold at 25 A, with magnetic short-circuit pickup calibrated to 240 A (approximately 10x In). This is the standard release for general-purpose feeder and branch-circuit protection where adjustable trip isn't required. The interrupting ratings climb to 75.6 kA at 240 V and hold at 52.5 kA at 415 V, then taper to 11.9 kA at 690 V — strong numbers for a 25 A frame, giving good selectivity headroom in most LV distribution schemes.

Thermal derating and application context

At 70 mm deep, 101.6 mm wide, and 130 mm tall, this breaker fits standard Siemens 3VA panel footprints. Power loss is 8.5 W maximum at rated current, which is modest for a 4-pole 25 A frame.

Frequently asked questions

What are the interrupting ratings for 3VA1125-3EF42-0AA0 at different voltages?

At 240 V it interrupts 75.6 kA, at 415 V it interrupts 52.5 kA, at 440 V it interrupts 32 kA, and at 500 V and 690 V it interrupts 11.9 kA.

What is the thermal derating for this 25 A MCCB at elevated temperatures?

It holds 25 A from 40 °C to 50 °C, drops to 24 A at 55 °C and 60 °C, and to 23 A at 65 °C and 70 °C.

How do I get current pricing and availability for 3VA1125-3EF42-0AA0?

Submit an RFQ with your target quantity and delivery window — pricing and stock are confirmed at quote time through our sourcing desk.

What are the physical dimensions of 3VA1125-3EF42-0AA0?

It is 70 mm deep, 101.6 mm wide, and 130 mm tall.

MPN
3VA1125-3EF42-0AA0