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Siemens 3VA2125-0MQ32-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2125-0MQ32-0AA0 SENTRON MCCB, 25 A, 3-Pole, Motor

MPN3VA2125-0MQ32-0AA0
Active

Siemens SENTRON 3VA2125-0MQ32-0AA0, molded case circuit breaker, 3-pole, 25 A, motor protection design with ETU860M electronic trip unit, adjustable trip class 10A/10/10E/20/20E/30/30E.

Siemens 3VA2125-0MQ32-0AA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3VA2125-0MQ32-0AA0 — Identification
ParameterValue
Product designationMolded case circuit breaker
Brand / rangeSENTRON
3VA2125-0MQ32-0AA0 — 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 classE
Breaking capacity at 415 V440 kA
Breaking capacity at 690 V187 kA
Power loss, max.0.5 W
3VA2125-0MQ32-0AA0 — Protection & Trip Unit
ParameterValue
Overcurrent release (trip unit) typeETU860M
Overcurrent protection functionLSIG
Ground-fault monitoringSummation current formation L-conductor
Grounding protection functionYes
3VA2125-0MQ32-0AA0 — Construction & Connection
ParameterValue
Main circuit connection typeon both sides nut keeper kit
Main circuit connector arrangementFront terminal
Protection class (IP), frontIP40
3VA2125-0MQ32-0AA0 — Accessories & Functions
ParameterValue
Undervoltage releaseNo
Voltage triggerNo
Trip indicatorNo
Communication functionYes
Measurement functionYes
Motor drive optionYes
Auxiliary CO contacts0
3VA2125-0MQ32-0AA0 — Environmental
ParameterValue
Operating temperature, max.70 °C
Operating temperature, min.-25 °C
Storage temperature, max.80 °C
Storage temperature, min.-40 °C
3VA2125-0MQ32-0AA0 — 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

Motor protection MCCB with ETU860M — 25 A, 3-pole

The Siemens SENTRON 3VA2125-0MQ32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 25 A continuous current, designed specifically for motor protection applications. It carries an ETU860M electronic overcurrent release with adjustable trip classes (10A, 10/10E, 20/20E, 30/30E), giving you thermal-memory and phase-failure protection for induction motors on conveyors, pumps, and compressors. Breaking capacity reaches 440 kA at 415 V and 187 kA at 690 V — high enough to handle fault currents on large secondary substations or industrial switchboards without cascading upstream breakers. The 105 mm width and 181 mm height fit standard SENTRON 3VA panel cutouts; depth is 86 mm. Rated insulation voltage is 800 V, and the unit operates from -25 °C to 70 °C ambient with no derating of the 25 A rating across the entire temperature range.

Communication and monitoring functions

This MCCB includes a communication function and phase-failure detection as standard.

Frequently asked questions

How do I get current pricing and availability for 3VA2125-0MQ32-0AA0?

Submit an RFQ through the storefront. This part is sourced to order through independent distribution; pricing and stock position are confirmed at quote time.

What is the closest functional second-source to 3VA2125-0MQ32-0AA0?

The 3VA2125-8KQ42-0AA0 is a functional peer within the same SENTRON 3VA family. The key difference is the trip unit and accessory configuration — verify the release type and auxiliary contact requirements before substituting. The 3VA2125-0MQ32-0AA0 uses an ETU860M electronic release; the 8KQ42 variant may carry a different release or communication module.

MPN
3VA2125-0MQ32-0AA0