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Siemens 3RV1031-4BB10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1031-4BB10 SIRIUS Motor Protection Circuit Breake

MPN3RV1031-4BB10

Siemens SIRIUS motor protection circuit breaker, 3RV1031-4BB10, 20 A continuous, Class 20 trip, 50 kA breaking capacity at 400 V AC, screw terminals, DIN rail mount.

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

Specifications

3RV1031-4BB10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1031-4BB10 — 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)14.5 W
Power loss, per pole (AC, hot)4.8 W
3RV1031-4BB10 — Protection & Tripping
ParameterValue
Overload release setting range14 ... 20 A
Trip classCLASS 20
Breaking capacity at 240 V (AC)100 kA
Breaking capacity at 400 V (AC)50 kA
Breaking capacity at 500 V (AC)12 kA
Breaking capacity at 690 V (AC)5 kA
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1031-4BB10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1031-4BB10 — 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
3RV1031-4BB10 — Mechanical
ParameterValue
Height140 mm
Width55 mm
Depth149 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022
Mounting positionany
3RV1031-4BB10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1031-4BB10 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

Motor protection circuit breaker for 20 A loads

The Siemens 3RV1031-4BB10 is a SIRIUS motor protection circuit breaker rated for 20 A continuous current with a Class 20 trip characteristic, designed to protect three-phase motors up to 7.5 kW at 400 V. It integrates phase-failure detection and offers a breaking capacity of 50 kA at 400 V AC, 100 kA at 240 V, tapering to 5 kA at 690 V.

Trip class and coordination

The 50 kA SCCR at 400 V gives headroom for most industrial panel coordination studies without requiring a current-limiting upstream device. At 690 V the 5 kA rating still covers many direct-on-line motor starters in 690 V systems.

The auxiliary switch option (product extension available) allows remote status feedback without extra contactors.

Frequently asked questions

What is the breaking capacity of 3RV1031-4BB10 at 400 V?

50 kA at 400 V AC, 100 kA at 240 V, 12 kA at 500 V, and 5 kA at 690 V.

What wire sizes does the 3RV1031-4BB10 accept?

Solid conductors: 2x (0.75... 16 mm²). Stranded: 2x (0.75... 25 mm²) or 1x (0.75 … 35 mm²).

Where can I buy 3RV1031-4BB10 and how is it quoted?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3RV1031-4BB10