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Siemens 3RV1021-0FA10-0FJ0 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-0FA10-0FJ0 SIRIUS Motor Protection Circuit B

MPN3RV1021-0FA10-0FJ0

Siemens SIRIUS motor protection circuit breaker, 3RV1021-0FA10-0FJ0, 0.5 A continuous current, Class 10 trip class, 100 kA breaking capacity at 400 V AC, screw-type terminals, snap-on DIN rail mounting.

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

3RV1021-0FA10-0FJ0 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-0FA10-0FJ0 — 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
3RV1021-0FA10-0FJ0 — 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
3RV1021-0FA10-0FJ0 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)100 000
Switching frequency, AC-3 (max.)15 1/h
3RV1021-0FA10-0FJ0 — 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)
3RV1021-0FA10-0FJ0 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting positionany
3RV1021-0FA10-0FJ0 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
3RV1021-0FA10-0FJ0 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

The 45 mm width and 96 mm depth mean it occupies one standard 45 mm module slot on the rail — no extra side clearance needed (0 mm at the side; 0 mm backwards,). Any mounting position is permitted, which helps when laying out a dense panel where vertical or horizontal orientation matters for wire routing. Screw-type terminals on the main current circuit accept solid or stranded conductors: 2× (1…2.5 mm²) and 2× (2.5…6 mm²). The IP20 front is standard for enclosed panels; no additional finger-safe shrouding required behind the gland plate.

Shock resistance is 25 g / 11 ms, adequate for machine-mounted panels on presses or conveyors. The mechanical endurance of the main contacts is typically 100 000 operations, and the maximum switching frequency at AC-3 duty is 15 operations per hour.

Frequently asked questions

What is the breaking capacity of 3RV1021-0FA10-0FJ0 at 400 V?

100 kA at 400 V AC. The same 100 kA rating holds at 240 V, 500 V, and 690 V AC.

What trip class is this motor protection breaker?

Class 10. It will trip within 10 seconds at 7.2× the current setting, matching the thermal characteristic of standard IEC induction motors.

Where can I buy the 3RV1021-0FA10-0FJ0?

This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — submit an RFQ with your target quantity and delivery window for a firm commitment.

Will 3RV1021-0FA10-0FJ0 drop into a panel specified around 3RV1011-0GA10 without rewiring?

Both are SIRIUS motor protection breakers on the same 45 mm wide DIN-rail footprint with screw terminals, so the panel cutout and rail position are the same. However, the 3RV1021-0FA10-0FJ0 carries a 0.5 A continuous rating versus the 3RV1011-0GA10's different rating — verify the motor FLA matches the new breaker's setting range before swapping. The wiring terminal capacity (solid/stranded 1…6 mm²) is identical, so no re-termination is needed if the conductor size is within that range.

MPN
3RV1021-0FA10-0FJ0