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Siemens 3VA2125-7HK32-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2125-7HK32-0AA0 SENTRON MCCB, 25 A, 3-Pole, ETU34

MPN3VA2125-7HK32-0AA0
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Siemens SENTRON 3VA2125-7HK32-0AA0, molded case circuit breaker, 3-pole, 25 A, ETU340 electronic trip unit, line protection design.

Siemens 3VA2125-7HK32-0AA0 datasheet (PDF)
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

3VA2125-7HK32-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
3VA2125-7HK32-0AA0 — Ratings
ParameterValue
Number of poles3
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 °C25 A
Current at 60 °C25 A
Current at 65 °C25 A
Current at 70 °C25 A
Switching capacity classC
Breaking capacity at 240 V330 kA
Breaking capacity at 415 V242 kA
Breaking capacity at 440 V242 kA
Breaking capacity at 500 V187 kA
Breaking capacity at 690 V3.7 kA
Power loss, max.0.6 W
3VA2125-7HK32-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU340
Overcurrent protection functionELISA LI
Ground-fault monitoringWithout
Grounding protection functionNo
3VA2125-7HK32-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typeon both sides nut keeper kit
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2125-7HK32-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionNo
Measurement functionNo
Motor drive optionYes
Auxiliary CO contacts0
3VA2125-7HK32-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2125-7HK32-0AA0 — Mechanical
ParameterValue
Mechanical service life (operating cycles), typ.25 000
Height181 mm
Width105 mm
Depth86 mm
Height (in)7.13 in
Width (in)4.13 in
Depth (in)3.39 in

Product details

SENTRON 3VA2125-7HK32-0AA0 — 25 A MCCB with ETU340 trip unit

The Siemens 3VA2125-7HK32-0AA0 is a SENTRON molded case circuit breaker rated for 25 A continuous current with no derating across the full -25 °C to 70 °C operating range — the same 25 A holds at 40 °C, 55 °C, and 65 °C, so you don't have to upsize for a warm panel. Rated insulation voltage is 800 V, and the interrupting ratings climb to 330 kA at 240 V, 242 kA at 415 V, and 187 kA at 500 V, dropping to 3.7 kA at 690 V — enough headroom for most distribution panels without cascading upstream breakers.

Maximum power loss is 0.6 W — negligible for thermal budgeting inside a crowded enclosure.

Frequently asked questions

What is the interrupting rating of this MCCB at 240 V?

It is rated for 330 kA at 240 V, 242 kA at 415 V, and 187 kA at 500 V, with a drop to 3.7 kA at 690 V.

What trip unit does the 3VA2125-7HK32-0AA0 use?

It uses the ETU340 electronic overcurrent release, which supports adjustable protection curves for selectivity coordination.

Does the 25 A rating derate at higher ambient temperatures?

No — the 25 A continuous rating holds steady from -25 °C up to 70 °C, so no derating is needed for warm panel environments.

Where can I buy 3VA2125-7HK32-0AA0 and get current pricing?

This part is available to order through our independent distribution channel. Submit an RFQ and we'll confirm availability and current pricing at quote time.

MPN
3VA2125-7HK32-0AA0