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Siemens 3RV2031-4KA15 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2031-4KA15 SIRIUS Motor Protection Circuit Breake

MPN3RV2031-4KA15
Active

Siemens SIRIUS 3RV2031-4KA15, motor protection circuit breaker, screw-type terminals, 22 kW at 230 V, 30 kA at 400 V, Trip Class 10, phase failure detection, screw and snap-on mounting onto 35 mm DIN rail.

Siemens 3RV2031-4KA15 datasheet (PDF)
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

3RV2031-4KA15 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS2
3RV2031-4KA15 — Electrical
ParameterValue
Rated operational current (Ie)73 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)29.5 W
Power loss, per pole (AC, hot)9.8 W
3RV2031-4KA15 — Protection & Tripping
ParameterValue
Overload release setting range62 ... 73 A
Instantaneous short-circuit trip current949 A
Trip classCLASS 10
Breaking capacity at 240 V (AC)65 kA
Breaking capacity at 400 V (AC)65 kA
Breaking capacity at 500 V (AC)8 kA
Breaking capacity at 690 V (AC)4 kA
Breaking capacity at 240 V65 kA
Breaking capacity at 690 V2 kA
Short-circuit trip typemagnetic
Overload release typethermal
Short-circuit protectionYes
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2031-4KA15 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)20 000
Endurance, auxiliary contacts (typ.)20 000
Switching frequency, AC-3 (max.)15 1/h
3RV2031-4KA15 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementTop and bottom
Conductor cross-section, solid / stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
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 ... 1)
3RV2031-4KA15 — 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
3RV2031-4KA15 — 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
3RV2031-4KA15 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

Motor protection circuit breaker, SIRIUS series

Rated operating voltage spans 20 to 690 V. At 230 V it handles 22 kW motor loads; the breaking capacity at 400 V is 30 kA, and at 690 V it still interrupts 2 kA. The auxiliary contact ratings are 1 A at 24 V, 0.15 A at 60 V, and 0.5 A at 230 V — enough for a PLC input or contactor coil feedback.

The 3RV2031-4KA15 measures 55 mm wide, 140 mm high, and 149 mm deep.

Environmental and mounting specs

The screw-type terminals accept 2× (0.5 to 1.5 mm²) or 2× (0.75 to 2.5 mm²) solid or stranded conductors. Main contact terminal size is M6.

Frequently asked questions

Where can I buy 3RV2031-4KA15 and get a price?

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

What is the breaking capacity of 3RV2031-4KA15 at 400 V?

The breaking capacity at 400 V is 30 kA. At 690 V it is 2 kA, and at 500 V it is 5 kA.

What motor power does 3RV2031-4KA15 support at 230 V?

It supports 22 kW at 230 V rated value.

Does 3RV2031-4KA15 include phase failure detection?

Yes, phase failure detection is built in. Ground fault detection is not included.

MPN
3RV2031-4KA15