Skip to main content
Log in
Siemens 3RV1031-4GB10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1031-4GB10 SIRIUS Motor Protection CB, 45 A, CLAS

MPN3RV1031-4GB10

Siemens SIRIUS motor-protection circuit breaker, 3RV1031-4GB10, 45 A continuous, CLASS 20 trip, 50 kA SCCR 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

3RV1031-4GB10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1031-4GB10 — 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
3RV1031-4GB10 — Protection & Tripping
ParameterValue
Overload release setting range36 ... 45 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)10 kA
Breaking capacity at 690 V (AC)4 kA
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1031-4GB10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1031-4GB10 — 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)
3RV1031-4GB10 — 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
3RV1031-4GB10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1031-4GB10 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

The Siemens 3RV1031-4GB10 is a SIRIUS motor-protection circuit breaker rated for 45 A continuous current with a CLASS 20 trip characteristic, sized for a 22 kW motor at 400 V. It snaps onto a 35 mm DIN rail per EN 50022 and uses screw-type box terminals for the main circuit — 2x (0.75…16 mm²) solid or 2x (0.75…25 mm²) stranded, with a single conductor up to 35 mm² stranded.

Trip class and protection logic

CLASS 20 means the bimetal trip allows up to 20 seconds at 600% of the full-load current before opening — standard for general-purpose induction motors driving pumps, fans, and compressors where the start-up transient isn't extreme. No ground-fault detection here; if you need that, you'd add a separate ground-fault module or use a different frame.

Zero clearance needed at the back or sides — you can butt it against other devices without derating spacing. The screw terminals accept AWG 18…2 for the main circuit.

Shock rated at 25 g / 11 ms. RoHS compliance date is July 1, 2006, so it meets the EU directive.

Frequently asked questions

What is the interrupting rating of 3RV1031-4GB10 at 400 V?

50 kA at 400 V AC. At 240 V it's 100 kA, at 500 V it's 10 kA, and at 690 V it's 4 kA.

What wire sizes does the 3RV1031-4GB10 accept?

The main circuit screw terminals accept 2x (0.75…16 mm²) solid or 2x (0.75…25 mm²) stranded, with a single conductor up to 35 mm² stranded. For AWG, that's 2x (18…2).

Where can I buy 3RV1031-4GB10 and get current pricing?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — send an RFQ for a firm number.

MPN
3RV1031-4GB10