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Siemens 3RV1021-0CA10-ZW96 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-0CA10-ZW96 SIRIUS Motor Protection Circuit B

MPN3RV1021-0CA10-ZW96

Siemens SIRIUS motor protection circuit breaker, 3RV1021-0CA10-ZW96, 0.25 A continuous current, CLASS 10 trip, 100 kA breaking capacity at 400 V AC, 3-pole, screw terminals, IP20 front.

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

Specifications

3RV1021-0CA10-ZW96 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-0CA10-ZW96 — 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-ZW96 — 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-ZW96 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1021-0CA10-ZW96 — 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-ZW96 — 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-ZW96 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1021-0CA10-ZW96 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

The Siemens SIRIUS 3RV1021-0CA10-ZW96 is a three-pole motor protection circuit breaker rated for a continuous current of 0.25 A. The 100 kA breaking capacity at 400 V AC means it can safely interrupt high fault currents without upstream fuses in most industrial panels — that is the SCCR you need for a 400 V line-up.

At 0.25 A continuous rating, this breaker protects small motors — think fractional-horsepower pumps, fans, or conveyor drives. The CLASS 10 trip ensures the breaker opens within 10 seconds at 600% of rated current, matching the thermal curve of a standard IEC motor. The 100 kA breaking capacity holds across 240 V, 400 V, 500 V, and 690 V AC, giving you full fault protection regardless of the supply voltage within that range.

The 45 mm width and 96 mm depth fit standard panel layouts — no extra clearance needed at the sides or rear (0 mm backwards, 0 mm at the side). Screw-type terminals on both main and auxiliary circuits accept solid or stranded conductors up to 6 mm² (2x 1–2.5 mm² and 2x 2.5–6 mm²). IP20 front protection means it is suited for enclosed panels only.

Frequently asked questions

Where can I buy 3RV1021-0CA10-ZW96 and how is it quoted?

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

What is the closest functional second-source to 3RV1021-0CA10-ZW96?

The 3RV1011-0GA10 is a peer in the same SIRIUS family, but verify the continuous current rating and trip class against your motor nameplate — the 0.25 A rating and CLASS 10 are specific to this variant.

What is the depth of 3RV1021-0CA10-ZW96?

The depth is 96 mm.

What is the solid conductor capacity of 3RV1021-0CA10-ZW96?

The solid conductor capacity is 2x (1... 2.5 mm²) and 2x (2.5... 6 mm²).

Will 3RV1021-0CA10-ZW96 drop into a panel specified around 3RV1011-0GA10 without rewiring?

The 45 mm width and DIN-rail mounting are common across the SIRIUS 3RV1 family, so the footprint is the same. However, verify the terminal arrangement and auxiliary contact options — the 3RV1021-0CA10-ZW96 supports an auxiliary switch, but wiring may differ if the panel uses a specific auxiliary module.

What compliance documentation does Siemens provide for 3RV1021-0CA10-ZW96?

The part carries a substance prohibitance date of 01.05.2012, indicating RoHS compliance. Standard Siemens documentation includes a CE declaration and IEC/EN 60947-2 test certificates. UL and CSA listings are typical for the SIRIUS family but should be confirmed against the specific variant.

MPN
3RV1021-0CA10-ZW96