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Siemens 3RV1021-1KA15-ZW97 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-1KA15-ZW97 SIRIUS Motor Protection Circuit B

MPN3RV1021-1KA15-ZW97

Siemens SIRIUS 3RV1021-1KA15-ZW97, motor protection circuit breaker, screw-type terminals, 12.5 A rated current, CLASS 10 trip class, 100 kA breaking capacity at 400 V AC, IP20 front protection, 45 mm width, snap-on mounting 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

3RV1021-1KA15-ZW97 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-1KA15-ZW97 — 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
3RV1021-1KA15-ZW97 — 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
3RV1021-1KA15-ZW97 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)100 000
Switching frequency, AC-3 (max.)15 1/h
3RV1021-1KA15-ZW97 — 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)
3RV1021-1KA15-ZW97 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting positionany
3RV1021-1KA15-ZW97 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
3RV1021-1KA15-ZW97 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

The Siemens SIRIUS 3RV1021-1KA15-ZW97 is a motor protection circuit breaker rated for 12.5 A continuous current, sized for a 5.5 kW motor at 400 V AC. Width is 45 mm, height 97 mm, depth 96 mm — fits a standard 45 mm-wide slot on the DIN rail, leaving adjacent slots free for contactors or overloads.

Current production — the manufacturer lists this part as active. No last-time-buy or phase-out notice is in effect.

Termination & auxiliaries

Solid conductors: 2x (0.5–1.5 mm²) and 2x (0.75–2.5 mm²). Stranded: 2x (1–2.5 mm²) and 2x (2.5–6 mm²). The auxiliary switch is transverse design, rated 1 A at 24 V, 0.5 A at 230 V, 0.15 A at 60 V. No factory-fitted auxiliary contacts — the transverse switch is built in for signaling the tripped state.

Environmental & mechanical limits

Shock rated at 25g for 11 ms. Maximum operating altitude 2 000 m without derating. Power loss in hot operating state is 9.25 W at rated current.

Frequently asked questions

What is the breaking capacity of 3RV1021-1KA15-ZW97?

100 kA at 240 V AC and 400 V AC, 42 kA at 500 V AC, 6 kA at 690 V AC. The 100 kA rating at 400 V means this breaker can interrupt the full short-circuit current available from a typical industrial 400 V supply without upstream devices needing to clear the fault.

Where can I buy the 3RV1021-1KA15-ZW97?

This part is sourced and quoted to order against an RFQ through independent distribution channels. Current pricing and lead time are confirmed at quote time — submit an RFQ for a firm commitment.

What is the closest functional second-source for 3RV1021-1KA15-ZW97 — 3RV6011-0CA10?

The 3RV6011-0CA10 is a different frame size in the SIRIUS series. The 3RV1021-1KA15-ZW97 is a 45 mm-wide motor protection breaker with screw terminals; the 3RV6011-0CA10 is a compact 45 mm-wide design but with spring-cage terminals and a different accessory footprint. They are not drop-in replacements — verify terminal type, auxiliary contact arrangement, and mounting rail clearance before substituting.

What compliance documentation does Siemens provide for 3RV1021-1KA15-ZW97?

Standard Siemens SIRIUS documentation includes a declaration of conformity to IEC/EN 60947-2 and 60947-4-1, plus RoHS and REACH compliance statements. UL and CSA approvals are typical for this series; the specific certification marks are listed on the product label and in the manufacturer's declaration.

MPN
3RV1021-1KA15-ZW97