Siemens 3VA2125-6KQ36-0AA0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA2125-6KQ36-0AA0 SENTRON MCCB, 25 A, 3-Pole, 242 k

Name: 3VA2125-6KQ36-0AA0
Brand: Siemens
SKU: 3VA2125-6KQ36-0AA0
Availability: LimitedAvailability
Author: Sensor Sully

MPN3VA2125-6KQ36-0AA0

Active

Siemens SENTRON 3VA2125-6KQ36-0AA0, molded case circuit breaker, 3-pole, 25 A continuous, 300 A frame, 242 kA interrupting at 240 V, line protection design with communication and ground-fault monitoring.

Request quote

Siemens 3VA2125-6KQ36-0AA0 datasheet (PDF)

StockContact for availability

MOQ1 pcs

Sourced new & surplus through independent channelsListing updated Jul 2026

Specifications

Identification

3VA2125-6KQ36-0AA0 — Identification
Parameter	Value
Product designation	Molded case circuit breaker
Brand / range	SENTRON

Ratings

3VA2125-6KQ36-0AA0 — Ratings
Parameter	Value
Number of poles	3
Rated operational voltage Ue (AC)	690 V
Rated insulation voltage Ui	800 V
Current at 40 °C	25 A
Current at 45 °C	25 A
Current at 50 °C	25 A
Current at 55 °C	25 A
Current at 60 °C	25 A
Current at 65 °C	25 A
Current at 70 °C	25 A
Switching capacity class	H
Breaking capacity at 240 V	242 kA
Breaking capacity at 415 V	187 kA
Breaking capacity at 440 V	187 kA
Breaking capacity at 500 V	121 kA
Breaking capacity at 690 V	3.7 kA
Power loss, max.	0.6 W

Protection & Trip Unit

3VA2125-6KQ36-0AA0 — Protection & Trip Unit
Parameter	Value
Overcurrent release (trip unit) type	ETU860
Overcurrent protection function	LSIG
Ground-fault monitoring	Summation current formation L-conductor
Grounding protection function	Yes

Construction & Connection

3VA2125-6KQ36-0AA0 — Construction & Connection
Parameter	Value
Main circuit connection type	double-sided box terminal
Main circuit connector arrangement	Front terminal
Protection class (IP), front	IP40

Accessories & Functions

3VA2125-6KQ36-0AA0 — Accessories & Functions
Parameter	Value
Undervoltage release	No
Voltage trigger	No
Trip indicator	No
Communication function	Yes
Measurement function	Yes
Motor drive option	Yes
Auxiliary CO contacts	0

Environmental

3VA2125-6KQ36-0AA0 — Environmental
Parameter	Value
Operating temperature, max.	70 °C
Operating temperature, min.	-25 °C
Storage temperature, max.	80 °C
Storage temperature, min.	-40 °C

Mechanical

3VA2125-6KQ36-0AA0 — Mechanical
Parameter	Value
Mechanical service life (operating cycles), typ.	25 000
Height	181 mm
Width	105 mm
Depth	86 mm
Height (in)	7.13 in
Width (in)	4.13 in
Depth (in)	3.39 in

Product details

What this MCCB is and what it does

The Siemens SENTRON 3VA2125-6KQ36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 25 A continuous current on a 300 A frame, designed for line protection in distribution panels and motor control centers. Its interrupting capacity hits 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V — so the SCCR you need governs which voltage level you design around. Rated insulation voltage is 800 V, meaning it can sit on a 690 V system with margin to spare.

Panel fit and environmental limits

Dimensions: 105 mm wide, 181 mm tall, 86 mm deep — fits standard MCCB panel cutouts with room for adjacent breakers. Operating temperature range -25 °C to 70 °C; storage from -40 °C to 80 °C — fine for unheated warehouses and outdoor enclosures within spec.