BOM / RFQ

Siemens 3RV1321-1DH10-ZX95 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1321-1DH10-ZX95 SIRIUS Circuit Breaker, 3.2 A, 50

MPN3RV1321-1DH10-ZX95

Siemens SIRIUS 3RV1321-1DH10-ZX95, circuit breaker for starter combinations, 3-pole, 3.2 A continuous, 50 kA breaking at 400 V AC, screw terminals, IP20 front, DIN rail mount.

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Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RV1321-1DH10-ZX95 — Identification
Parameter	Value
Series	SIRIUS
Product designation	circuit breaker

3RV1321-1DH10-ZX95 — Electrical
Parameter	Value
Rated voltage	690 V
Rated voltage, AC-3 (max.)	690 V
Rated impulse withstand voltage (Uimp)	6 000 V
Number of poles	3
Power loss (AC, hot)	3.5 W
Power loss, per pole (AC, hot)	1.2 W

3RV1321-1DH10-ZX95 — Protection & Tripping
Parameter	Value
Breaking capacity at 240 V (AC)	50 kA
Breaking capacity at 400 V (AC)	50 kA
Breaking capacity at 500 V (AC)	50 kA
Breaking capacity at 690 V (AC)	6 kA
Phase-failure detection	No
Ground-fault detection	No

3RV1321-1DH10-ZX95 — Endurance & Switching
Parameter	Value
Endurance, main contacts (typ.)	100 000
Switching frequency, AC-3 (max.)	15 1/h

3RV1321-1DH10-ZX95 — Connections
Parameter	Value
Main-circuit terminal type	screw-type terminals
Main-circuit connector arrangement	front side
Conductor cross-section, finely stranded with ferrule	2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)

3RV1321-1DH10-ZX95 — Mechanical
Parameter	Value
Height	97 mm
Width	45 mm
Depth	96 mm
Mounting position	any

3RV1321-1DH10-ZX95 — Environmental
Parameter	Value
Operating temperature	-20 ... +60 °C
Storage temperature	-50 ... +80 °C
Transport temperature	-50 ... +80 °C

3RV1321-1DH10-ZX95 — Specifications
Parameter	Value
Design Of The Product	for starter combinations

Product details

It's a 3-pole unit rated for 3.2 A continuous current, with a breaking capacity of 50 kA at 400 V AC. That 50 kA holds at 240 V and 500 V too, dropping to 6 kA at 690 V. For motor duty, it's rated 1.1 kW at 400 V in AC-3 service, good for about 15 operations per hour maximum. The main contacts are good for 100,000 mechanical cycles typical.

No clearance needed at the side or backwards. Mounting position is any, which helps in tight enclosures. Main circuit connections are screw-type terminals, accepting 2x (1 to 2.5 mm²) solid or stranded, or 2x (2.5 to 6 mm²). AWG equivalent for the main contacts is 2x (14 to 10). The front face is IP20 rated — finger-safe but not sealed.

Environmental and electrical margins

Rated for altitudes up to 2,000 m. Shock resistance tested at 25g for 11 ms.

Frequently asked questions

Will 3RV1321-1DH10-ZX95 drop into a panel specified around 3RV6011-0CA10?

Both mount on 35 mm DIN rail per EN 50022 with the same footprint, so mechanical fit is the same. However, ratings differ — verify continuous current and breaking capacity match your application before substituting.