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Siemens 3RV1342-4KC10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1342-4KC10 SIRIUS Circuit Breaker, 75 A, 37 kW at

MPN3RV1342-4KC10

Siemens SIRIUS 3RV1342-4KC10 circuit breaker for starter combinations, 75 A continuous, 37 kW at 400 V, 100 kA SCCR at 400 V, screw terminals, IP20 front, current production.

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

3RV1342-4KC10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1342-4KC10 — 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)38 W
Power loss, per pole (AC, hot)12.7 W
3RV1342-4KC10 — 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)10 kA
Breaking capacity at 690 V (AC)6 kA
Phase-failure detectionNo
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1342-4KC10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1342-4KC10 — 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)
3RV1342-4KC10 — 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
3RV1342-4KC10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1342-4KC10 — Specifications
ParameterValue
Design Of The Productfor starter combinations

Product details

Continuous current rated at 75 A, it handles a 37 kW motor at 400 V AC (AC-3 duty). The breaking capacity hits 100 kA at 400 V AC, dropping to 10 kA at 500 V and 6 kA at 690 V, which covers most industrial distribution panels.

Zero clearance at the sides and rear, so it packs tight in a panel. Screw-type box terminals on the main circuit accept 2x (2.5–16 mm²) solid or 2x (10–50 mm²) stranded; auxiliary and control circuits use separate screw terminals. IP20 on the front, finger-safe touch protection per the standard.

Frequently asked questions

Where can I buy 3RV1342-4KC10?

This part is available to order; submit an RFQ for current pricing and availability through our independent distribution channel.

What are the key specifications of 3RV1342-4KC10?

75 A continuous current, 37 kW at 400 V AC-3, 100 kA SCCR at 400 V, 3 poles, screw terminals, IP20 front, DIN rail mount.

What compliance documentation does this brand provide for 3RV1342-4KC10?

RoHS compliance is documented with a substance prohibition date of July 1, 2006. The part carries IP20 finger-safe touch protection.

MPN
3RV1342-4KC10