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Siemens 3RV2331-4EC10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2331-4EC10 SIRIUS Circuit Breaker, 32 A, 30 kA at

MPN3RV2331-4EC10
Active

Siemens SIRIUS circuit breaker, 3RV2331-4EC10, for starter combinations, 32 A rated current at 480/600 V, 30 kA breaking capacity at 400 V, screw and snap-on 35 mm DIN rail.

$83.82Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RV2331-4EC10 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS2
3RV2331-4EC10 — Electrical
ParameterValue
Rated operational current (Ie)32 A
Rated voltage20 ... 690 V
Rated voltage, AC-3 (max.)690 V
Rated frequency50 ... 60 Hz
Rated insulation voltage (Ui), pollution degree 3690 V
Rated impulse withstand voltage (Uimp)6 kV
Number of poles3
Power loss (AC, hot)18 W
Power loss, per pole (AC, hot)6 W
3RV2331-4EC10 — Protection & Tripping
ParameterValue
Instantaneous short-circuit trip current416 A
Breaking capacity at 240 V (AC)100 kA
Breaking capacity at 400 V (AC)65 kA
Breaking capacity at 500 V (AC)10 kA
Breaking capacity at 690 V (AC)4 kA
Breaking capacity at 240 V100 kA
Breaking capacity at 690 V2 kA
Short-circuit trip typemagnetic
Short-circuit protectionYes
Phase-failure detectionNo
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2331-4EC10 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)50 000
Endurance, auxiliary contacts (typ.)50 000
Switching frequency, AC-3 (max.)15 1/h
3RV2331-4EC10 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementTop and bottom
Conductor cross-section, solid / stranded2x (1 ... 25 mm²), 1x (1 ... 35 mm²)
Conductor cross-section, finely stranded with ferrule2x (1 ... 16 mm²), 1x (1 ... 25 mm²)
Conductor range, AWG (main contacts)2x (18 ... 3), 1x (18 ... 2)
3RV2331-4EC10 — Mechanical
ParameterValue
Height140 mm
Width55 mm
Depth149 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Mounting positionany
3RV2331-4EC10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Relative humidity (operation)10 ... 95 %
Max. installation altitude2 000 m
3RV2331-4EC10 — Specifications
ParameterValue
Design Of The ProductFor starter combinations

Product details

Rated at 32 A at both 480 V and 600 V, with a breaking capacity of 30 kA at 400 V, this part is built for industrial motor loads up to 25 hp at 460/480 V.

Dimensions are 149 mm deep, 55 mm wide, and 140 mm tall — a compact footprint that fits a standard 55 mm-wide DIN-rail slot. Clearance distances: 50 mm upward and downward, 10 mm to the side, zero forward and backward — so side-by-side packing is tight, but vertical spacing needs attention for arc-flash venting and wiring access. Terminals accept 2x (1 to 25 mm²) or 1x (1 to 35 mm²) solid or stranded copper, with M6 main-contact screws. That's a generous wire range for a 32 A device — allows paralleling smaller conductors or landing a single 35 mm² feed without adapters.

Ratings in context

Breaking capacity drops with voltage: 100 kA at 240 V, 30 kA at 400 V, 5 kA at 500 V, and 2 kA at 690 V. The 690 V figure (2 kA) is low — this breaker is not intended for 690 V distribution; it's a motor-circuit device. The rated insulation voltage spans 20 to 690 V, so the breaker itself is insulated for that range, but the interrupting rating governs the application. Maximum switching frequency at AC-3 (motor) duty is 15 operations per hour — that's typical for a thermal-magnetic breaker used for infrequent motor starting, not for rapid cycling. No ground-fault or phase-failure detection built in; those functions would need an external relay or a more advanced electronic trip unit.

Frequently asked questions

What is the breaking capacity of 3RV2331-4EC10 at 400 V?

30 kA at 400 V. That's the key SCCR figure for most industrial panels in North America and Europe on 400 V class systems.

Where can I buy 3RV2331-4EC10?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer.

MPN
3RV2331-4EC10