Skip to main content
Siemens 3RV1021-1KA10-0FJ0-ZX95 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-1KA10-0FJ0-ZX95 SIRIUS Motor Protection CB,

MPN3RV1021-1KA10-0FJ0-ZX95

Siemens SIRIUS motor protection circuit breaker, 3RV1021-1KA10-0FJ0-ZX95, 12.5 A rated continuous current, CLASS 10 trip class, 100 kA breaking capacity at 400 V AC, screw-type terminals, 45 mm width.

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

3RV1021-1KA10-0FJ0-ZX95 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-1KA10-0FJ0-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)9.25 W
Power loss, per pole (AC, hot)3.1 W
3RV1021-1KA10-0FJ0-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)42 kA
Breaking capacity at 690 V (AC)6 kA
Phase-failure detectionYes
Ground-fault detectionNo
3RV1021-1KA10-0FJ0-ZX95 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)100 000
Switching frequency, AC-3 (max.)15 1/h
3RV1021-1KA10-0FJ0-ZX95 — 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)
3RV1021-1KA10-0FJ0-ZX95 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting positionany
3RV1021-1KA10-0FJ0-ZX95 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
3RV1021-1KA10-0FJ0-ZX95 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

It carries a continuous current rating of 12.5 A and is rated for 5.5 kW motor output at 400 V. Breaking capacity is 100 kA at 240 V and 400 V AC, dropping to 42 kA at 500 V and 6 kA at 690 V. No ground fault detection on this variant.

Width is 45 mm, height 97 mm, depth 96 mm — fits a standard 45 mm module slot. Mounting position is any, which helps in tight enclosures. Terminals are screw-type for the main circuit, accepting solid or stranded conductors: 2×(1…2.5 mm²) and 2×(2.5…6 mm²), or AWG 14–10. Front face is IP20, so finger-safe in an enclosed panel. Power dissipation is 9.25 W total in hot operating state, or 3.1 W per pole.

Shock resistance rated at 25g / 11 ms. Mechanical endurance of main contacts is 100,000 operations typical.

Frequently asked questions

Does 3RV1021-1KA10-0FJ0-ZX95 include phase failure protection?

Yes, phase failure detection is built in. Ground fault detection is not included on this variant.

MPN
3RV1021-1KA10-0FJ0-ZX95