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Siemens 3RV1021-0CA10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-0CA10 SIRIUS Motor Protection Circuit Breake

MPN3RV1021-0CA10

Siemens SIRIUS motor protection circuit breaker, 3RV1021-0CA10, 3-pole, 0.25 A rated continuous current, 100 kA breaking capacity at 400 V AC, Trip Class 10, screw terminals, 45 mm width, IP20 front, DIN rail mount.

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

Specifications

3RV1021-0CA10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-0CA10 — 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)5.5 W
Power loss, per pole (AC, hot)1.8 W
3RV1021-0CA10 — Protection & Tripping
ParameterValue
Overload release setting range0.18 ... 0.25 A
Trip classCLASS 10
Breaking capacity at 240 V (AC)100 kA
Breaking capacity at 400 V (AC)100 kA
Breaking capacity at 500 V (AC)100 kA
Breaking capacity at 690 V (AC)100 kA
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1021-0CA10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1021-0CA10 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementfront side
Conductor cross-section, finely stranded with ferrule2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)
Conductor range, AWG (main contacts)2x (14 ... 10)
3RV1021-0CA10 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Mounting positionany
3RV1021-0CA10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1021-0CA10 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

The Siemens SIRIUS 3RV1021-0CA10 is a 3-pole motor protection circuit breaker rated for a continuous current of 0.25 A, with a breaking capacity of 100 kA across voltages from 240 V to 690 V AC. It is designed specifically for motor protection, incorporating phase failure detection and a Trip Class 10 characteristic to match standard induction motor starting profiles.

Mounting position is any orientation. Screw-type terminals on both main and auxiliary circuits accept solid and stranded conductors: 2x (1…2.5 mm²) and 2x (2.5…6 mm²) per terminal, or AWG 14–10. No clearance required at the back or sides (0 mm backwards, 0 mm at side).

Electrical Ratings and Duty

Rated insulation voltage 690 V, rated impulse withstand voltage 6 kV. At 400 V, the motor power rating is 0.06 kW. The Trip Class 10 characteristic allows up to 10 seconds of overload duration for motor starting, matching typical pump, fan, and compressor loads. Maximum operating frequency in AC-3 duty is 15 operations per hour. Power dissipation in hot operating state is 5.5 W total, 1.8 W per pole.

Frequently asked questions

What is the breaking capacity of 3RV1021-0CA10?

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

What wire sizes does the terminal accept?

Solid and stranded conductors: 2x (1…2.5 mm²) and 2x (2.5…6 mm²) per terminal, or AWG 14–10.

Where can I buy 3RV1021-0CA10?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time.

MPN
3RV1021-0CA10