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Siemens 3RV1342-4BC10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1342-4BC10 SIRIUS Circuit Breaker, 20 A, 100 kA a

MPN3RV1342-4BC10

Siemens SIRIUS circuit breaker for starter combinations, 3RV1342-4BC10, 20 A continuous, 100 kA breaking at 400 V, 7.5 kW motor rating at 400 V, screw terminals, DIN rail mount, IP20 front, finger-safe.

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

3RV1342-4BC10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1342-4BC10 — 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
3RV1342-4BC10 — 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)30 kA
Breaking capacity at 690 V (AC)12 kA
Phase-failure detectionNo
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1342-4BC10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1342-4BC10 — 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)
3RV1342-4BC10 — Mechanical
ParameterValue
Height165 mm
Width70 mm
Depth174 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022
Mounting positionany
3RV1342-4BC10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1342-4BC10 — Specifications
ParameterValue
Design Of The Productfor starter combinations

Product details

Motor circuit breaker for starter combinations

The 690 V rated voltage covers 480/575 V installations.

Dimensions: 70 mm wide, 165 mm high, 174 mm deep — zero clearance needed at sides or rear, so it packs tight in a panel. Any mounting position. Finger-safe touch protection and IP20 on the front keep live parts covered during maintenance.

Breaking capacity and environmental limits

Breaking capacity drops with voltage: 100 kA at 240 V and 400 V, 30 kA at 500 V, 12 kA at 690 V. Shock rated 25g / 11 ms. Power dissipation 21 W hot, 7 W per pole.

Listed as current production. RoHS compliance date 07/01/2006. No ground-fault or phase-failure detection built in. Auxiliary switch extension possible. Operating frequency max 15 operations per hour at AC-3.

Frequently asked questions

Where can I buy 3RV1342-4BC10 and how do I get a price?

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

What is 3RV1342-4BC10's listed depth?

174 mm.

What conductor sizes does the main circuit accept?

Solid: 2x (2.5... 16 mm²). Stranded: 2x (10... 50 mm²) or 1x (10... 70 mm²). AWG: 2x (10... 1) or 1x (10... 2).

What compliance documentation does Siemens provide for 3RV1342-4BC10?

RoHS compliance dated 07/01/2006. Finger-safe touch protection and IP20 front. No ground-fault or phase-failure detection.

MPN
3RV1342-4BC10