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Siemens 3RV1021-0CA15-ZX95 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-0CA15-ZX95 SIRIUS Motor Protection Circuit B

MPN3RV1021-0CA15-ZX95

Siemens SIRIUS 3RV1021-0CA15-ZX95 motor protection circuit breaker, 0.25 A continuous current, CLASS 10 trip, 100 kA SCCR at 400 V, screw and snap-on DIN rail mount.

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

Specifications

3RV1021-0CA15-ZX95 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-0CA15-ZX95 — 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
3RV1021-0CA15-ZX95 — Protection & Tripping
ParameterValue
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
3RV1021-0CA15-ZX95 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)100 000
Switching frequency, AC-3 (max.)15 1/h
3RV1021-0CA15-ZX95 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementfront side
Conductor cross-section, finely stranded with ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
3RV1021-0CA15-ZX95 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting positionany
3RV1021-0CA15-ZX95 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
3RV1021-0CA15-ZX95 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

The 0.25 A continuous current is the load-side protection setting — match this to the motor full-load amps or the transformer nameplate. The auxiliary switch is a transverse design — it mounts on the side of the breaker and changes state with the trip mechanism, giving a remote signal for a PLC or status lamp. The screw-type terminals for the main current circuit accept solid conductors from 0.5 to 1.5 mm² (two per clamp) and stranded from 1 to 2.5 mm².

Depth is 96 mm, height 97 mm. Zero clearance needed at the sides or backwards — the breaker can be butted against adjacent devices without derating. Front face is IP20 — finger-safe but not washdown-rated. Shock resistance is 25 g for 11 ms, adequate for most industrial panel environments.

Frequently asked questions

What is the interrupting rating of 3RV1021-0CA15-ZX95 at 400 V?

The short-circuit breaking capacity is 100 kA at 400 V AC, and the same 100 kA rating holds at 240 V, 500 V, and 690 V AC.

Where can I buy 3RV1021-0CA15-ZX95 and get current pricing?

This part is 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 price and lead time.

Does 3RV1021-0CA15-ZX95 have phase failure protection?

Yes, phase failure detection is built into the breaker. It will trip on the thermal curve if one phase is lost, protecting the motor from single-phase operation.

What is the trip class of 3RV1021-0CA15-ZX95?

It is CLASS 10, meaning it will trip within 10 seconds at 7.2× the set current — suitable for standard induction motor protection.

MPN
3RV1021-0CA15-ZX95