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Siemens 3RV1342-4EC10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1342-4EC10 SIRIUS Circuit Breaker, 32 A, 100 kA

MPN3RV1342-4EC10

Siemens SIRIUS 3RV1342-4EC10 circuit breaker for starter combinations, 32 A continuous, 100 kA breaking at 400 V AC, 15 kW motor rating at 400 V, screw terminals, DIN-rail mount.

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

3RV1342-4EC10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1342-4EC10 — Electrical
ParameterValue
Rated voltage690 V
Rated voltage, AC-3 (max.)690 V
Rated impulse withstand voltage (Uimp)6 000 V
Number of poles3
Power loss (AC, hot)21 W
Power loss, per pole (AC, hot)7 W
3RV1342-4EC10 — Protection & Tripping
ParameterValue
Breaking capacity at 240 V (AC)100 kA
Breaking capacity at 400 V (AC)100 kA
Breaking capacity at 500 V (AC)22 kA
Breaking capacity at 690 V (AC)12 kA
Phase-failure detectionNo
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1342-4EC10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1342-4EC10 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals with box terminals
Main-circuit connector arrangementfront side
Conductor cross-section, finely stranded with ferrule2x (2.5 ... 35 mm²), 2.5 ... 50 mm²
Conductor range, AWG (main contacts)2x (10 ... 1), 1x (10 ... 2)
3RV1342-4EC10 — Mechanical
ParameterValue
Height165 mm
Width70 mm
Depth174 mm
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Mounting positionany
3RV1342-4EC10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1342-4EC10 — Specifications
ParameterValue
Design Of The Productfor starter combinations

Product details

The Siemens SIRIUS 3RV1342-4EC10 is a three-pole circuit breaker designed for starter combinations — meaning it combines motor protection (overload and short-circuit) in one compact device that coordinates directly with a contactor.

No side clearance needed (0 mm at the side, 0 mm backwards), so you can pack breakers tight on the rail. Any mounting position is allowed, which simplifies layout in crowded cabinets.

Termination and wiring

Main current circuit uses screw-type box terminals. Solid conductors: 2x (2.5 to 16 mm²). Stranded: 2x (10 to 50 mm²) or 1x (10 to 70 mm²). Finely stranded with ferrule: 2x (2.5 to 35 mm²) or 2.5 to 50 mm². That range covers most motor feeder cables up to 70 mm² on a single run. Auxiliary and control circuit terminals are also screw-type, separate from the main power path.

Frequently asked questions

What is the breaking capacity of 3RV1342-4EC10 at 400 V?

100 kA at 400 V AC, which means it can safely interrupt a fault current up to 100,000 amps at that voltage without upstream protection needing to clear first.

What motor power does 3RV1342-4EC10 support at 400 V?

15 kW at 400 V AC-3 duty — that's the motor rating for standard three-phase induction motors.

Where can I buy 3RV1342-4EC10?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What compliance documentation does 3RV1342-4EC10 have?

Substance prohibitance date is 07/01/2006, indicating RoHS compliance. The brand provides standard documentation for industrial circuit breakers.

MPN
3RV1342-4EC10