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Siemens 3RV1021-1CA10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-1CA10 SIRIUS Motor Protection Circuit Breake

MPN3RV1021-1CA10

Siemens SIRIUS motor protection circuit breaker, 3RV1021-1CA10, 2.5 A continuous current, CLASS 10 trip class, 100 kA breaking capacity at 400 V AC, screw terminals, IP20 front, 45 mm wide, for 35 mm DIN rail per EN 50022.

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

Specifications

3RV1021-1CA10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-1CA10 — 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)7.25 W
Power loss, per pole (AC, hot)2.4 W
3RV1021-1CA10 — Protection & Tripping
ParameterValue
Overload release setting range1.8 ... 2.5 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)8 kA
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1021-1CA10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1021-1CA10 — 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)
3RV1021-1CA10 — 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
3RV1021-1CA10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1021-1CA10 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

Motor protection circuit breaker, 2.5 A, CLASS 10 — SIRIUS 3RV1021-1CA10

Its 2.5 A continuous current rating sets the overload protection threshold; the CLASS 10 trip characteristic means it will trip within 10 seconds at 7.2× rated current, matching standard induction motor starting profiles on pumps, fans, and conveyors.

Breaking capacity and voltage ratings

The maximum operating voltage is 690 V AC, with rated insulation voltage at 6 000 V surge withstand.

Mounting position is any, so horizontal or vertical rail orientation works.

Frequently asked questions

Where can I buy 3RV1021-1CA10 and how is it quoted?

The 3RV1021-1CA10 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 3RV1021-1CA10 at 400 V?

100 kA at 400 V AC, which is the same rating at 240 V and 500 V AC. At 690 V AC the breaking capacity is 8 kA.

Does 3RV1021-1CA10 include phase failure protection?

Yes, phase failure detection is built in — the breaker will trip if one phase is lost, protecting the motor from single-phasing.

MPN
3RV1021-1CA10