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Siemens 3RV1031-4EB15 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1031-4EB15 SIRIUS Motor Protection Circuit Breake

MPN3RV1031-4EB15

Siemens SIRIUS 3RV1031-4EB15 motor protection circuit breaker, 32 A continuous rated current, 15 kW at 400 V AC-3, CLASS 20 trip class, 50 kA breaking capacity at 400 V, screw terminals, DIN rail mount.

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

Specifications

3RV1031-4EB15 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1031-4EB15 — 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)19 W
Power loss, per pole (AC, hot)6.3 W
3RV1031-4EB15 — Protection & Tripping
ParameterValue
Overload release setting range22 ... 32 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
3RV1031-4EB15 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1031-4EB15 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals with box terminals
Main-circuit connector arrangementfront side
Conductor cross-section, finely stranded with ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor range, AWG (main contacts)2x (18 ... 2), 1x (18 ... 2)
3RV1031-4EB15 — 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
3RV1031-4EB15 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1031-4EB15 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

What this breaker does in a panel

The Siemens 3RV1031-4EB15 is a SIRIUS motor protection circuit breaker rated 32 A continuous and 15 kW at 400 V AC-3 — sized for a 15 kW induction motor on a 400 V three-phase line. The CLASS 20 trip curve gives it a 20-second maximum trip time at 7.2× rated current, which matches the thermal characteristic of most standard squirrel-cage motors during start-up. The 25g / 11 ms shock rating means it survives the shake inside a wind-turbine nacelle or a conveyor drive cabinet; no up-tower swaps if the grid hiccups.

Main circuit terminals accept stranded wire up to 35 mm² single or 2× 25 mm² — that's good for the full 32 A without derating. Auxiliary and control circuit terminals are screw-type as well, taking 2× 1.5 mm² solid or 2× 2.5 mm² solid. The auxiliary switch is transverse-mounted and field-installable, so you can add a remote trip indication or status contact without pulling the breaker off the rail.

Frequently asked questions

What compliance documentation does Siemens provide for 3RV1031-4EB15?

The part carries a RoHS compliance date of July 1, 2006 and a substance prohibition declaration. Standard Siemens documentation includes the declaration of conformity and CE marking; UL/CSA certification is typical for the SIRIUS line but should be verified against the specific nameplate marking.

Where can I buy 3RV1031-4EB15 and how is it quoted?

The part is sourced through independent industrial-automation distribution and quoted to order against an RFQ. Submit a request with your quantity and target delivery date for current pricing and availability — no stock figures are published here.

Will 3RV1031-4EB15 drop into a panel specified around 3RV1011-1HA10 without rewiring?

Both mount on the same 35 mm DIN rail and use screw-type terminals, so the mechanical fit is identical. However, the 3RV1031-4EB15 is rated for 32 A versus the smaller-frame 3RV1011-1HA10; verify your conductor sizing and upstream protection before swapping. The auxiliary switch design differs — check the wiring diagram if your panel uses the transverse auxiliary contact.

MPN
3RV1031-4EB15