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Siemens 3RV1021-0KA15-ZW98 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-0KA15-ZW98 SIRIUS Motor Protection Circuit B

MPN3RV1021-0KA15-ZW98

Siemens SIRIUS 3RV1021-0KA15-ZW98 motor protection circuit breaker, 1.25 A continuous rated current, Class 10 trip, 100 kA breaking capacity at 400 V AC, screw-type terminals, IP20 front, for 35 mm DIN rail.

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

3RV1021-0KA15-ZW98 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-0KA15-ZW98 — 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
3RV1021-0KA15-ZW98 — 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
3RV1021-0KA15-ZW98 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)100 000
Switching frequency, AC-3 (max.)15 1/h
3RV1021-0KA15-ZW98 — 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)
3RV1021-0KA15-ZW98 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting positionany
3RV1021-0KA15-ZW98 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
3RV1021-0KA15-ZW98 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

Product identity and motor protection rating

It carries a continuous current rating of 1.25 A and a rated motor power of 0.37 kW at 400 V AC, making it suited for small induction motors — fractional-horsepower pumps, fans, or conveyor drives in a control panel.

Breaking capacity and fault interruption

This breaker delivers 100 kA breaking capacity at 240 V, 400 V, 500 V, and 690 V AC (–). In a panel with a high-available-fault transformer, this lets you avoid a larger upstream breaker. The auxiliary switch contacts are rated 1 A at 24 V, 0.5 A at 230 V, and 0.15 A at 60 V — enough for a PLC digital input or a status lamp.

Depth is 96 mm, so it clears a 100 mm-deep enclosure. Terminals are screw-type for the main current circuit. Solid wire sizes accepted: 2× (0.5–1.5 mm²) and 2× (0.75–2.5 mm²); stranded: 2× (1–2.5 mm²) and 2× (2.5–6 mm²). No special ferrules needed, but the 2.5 mm² upper end on stranded matches standard motor leads up to 2.5 mm².

Shock resistance 25 g for 11 ms. Maximum altitude 2,000 m.

Frequently asked questions

What is 3RV1021-0KA15-ZW98's listed solid (2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²)) on this component line?

The solid wire sizes accepted are 2× (0.5–1.5 mm²) and 2× (0.75–2.5 mm²). Stranded sizes are 2× (1–2.5 mm²) and 2× (2.5–6 mm²).

Will 3RV1021-0KA15-ZW98 drop into a panel that was specified around 3RV1011-0GA10 without rewiring?

Both are 45 mm wide and mount on 35 mm DIN rail, so the mechanical footprint is the same. However, the terminal wire ranges differ, and the continuous current rating and trip class must match the motor. Verify the motor FLA and available fault current before substituting.

MPN
3RV1021-0KA15-ZW98