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Siemens 3RV1331-4FC10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1331-4FC10 SIRIUS Circuit Breaker, 40 A, 18.5 kW

MPN3RV1331-4FC10

Siemens SIRIUS 3RV1331-4FC10 circuit breaker for starter combinations, 40 A continuous, 18.5 kW at 400 V, 50 kA breaking capacity, 3-pole, screw terminals, IP20 front.

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

Specifications

3RV1331-4FC10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1331-4FC10 — 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)29 W
Power loss, per pole (AC, hot)9.7 W
3RV1331-4FC10 — Protection & Tripping
ParameterValue
Breaking capacity at 240 V (AC)100 kA
Breaking capacity at 400 V (AC)50 kA
Breaking capacity at 500 V (AC)10 kA
Breaking capacity at 690 V (AC)4 kA
Phase-failure detectionNo
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1331-4FC10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1331-4FC10 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals with box terminals
Main-circuit connector arrangementfront side
Conductor cross-section, finely stranded with ferrule2x (0.75 ... 16 mm²), 0.75 ... 25 mm²
Conductor range, AWG (main contacts)2x (18 ... 2), 1x (18 ... 2)
3RV1331-4FC10 — Mechanical
ParameterValue
Height140 mm
Width55 mm
Depth149 mm
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Mounting positionany
3RV1331-4FC10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1331-4FC10 — Specifications
ParameterValue
Design Of The Productfor starter combinations

Product details

The Siemens SIRIUS 3RV1331-4FC10 is a 3-pole circuit breaker designed for starter combinations, rated 40 A continuous and 18.5 kW motor output at 400 V AC. It snaps onto a 35 mm DIN rail per EN 50022 and accepts screw-type box terminals for the main circuit — solid up to 2x 16 mm² or stranded up to 2x 25 mm². Breaking capacity hits 50 kA at 400 V, dropping to 10 kA at 500 V and 4 kA at 690 V, so it handles high-fault panels without cascading upstream.

Zero clearance needed at the back or sides, so it packs tight in a panel.

Rated impulse withstand voltage is 6 kV, surge voltage resistance at 6 000 V. Operating frequency maxes at 15 operations per hour under AC-3 duty, so it's built for occasional motor starts, not high-cycle jogging.

Frequently asked questions

Where can I buy 3RV1331-4FC10 and how is it quoted?

This part is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What is the breaking capacity of 3RV1331-4FC10 at different voltages?

At 240 V AC it's 100 kA; at 400 V AC it's 50 kA; at 500 V AC it's 10 kA; at 690 V AC it's 4 kA. The 50 kA at 400 V covers most industrial panel fault levels.

What compliance documentation does Siemens provide for 3RV1331-4FC10?

The part carries a RoHS substance prohibition date of July 1, 2006, indicating RoHS compliance. Additional certifications (UL, CSA, IEC) are standard for the SIRIUS line but not individually listed in this record.

MPN
3RV1331-4FC10