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Siemens 3RV1021-4DA15 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-4DA15 SIRIUS Motor Protection Circuit Breake

MPN3RV1021-4DA15

Siemens SIRIUS motor protection circuit breaker, 3RV1021-4DA15, 25 A continuous, Class 10 trip, 50 kA SCCR at 400 V AC, screw terminals, DIN rail mount.

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

3RV1021-4DA15 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-4DA15 — 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)10.5 W
Power loss, per pole (AC, hot)3.5 W
3RV1021-4DA15 — Protection & Tripping
ParameterValue
Overload release setting range20 ... 25 A
Trip classCLASS 10
Breaking capacity at 240 V (AC)100 kA
Breaking capacity at 400 V (AC)50 kA
Breaking capacity at 500 V (AC)10 kA
Breaking capacity at 690 V (AC)4 kA
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1021-4DA15 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1021-4DA15 — 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)
Conductor range, AWG (main contacts)2x (14 ... 10)
3RV1021-4DA15 — 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
3RV1021-4DA15 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1021-4DA15 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

Integrator's quick take

The Siemens 3RV1021-4DA15 is a SIRIUS motor protection circuit breaker rated for 25 A continuous current, with a Class 10 trip characteristic — meaning it opens within 10 seconds at 7.2× rated current, matching the thermal curve of standard induction motors during locked-rotor starts. It delivers 11 kW at 400 V AC-3 duty, so it directly covers a 15 hp (11 kW) motor on a 400 V line.

The 45 mm width and 96 mm depth fit standard enclosures.

RoHS compliant per substance prohibition date of 05/01/2012. The SIRIUS series carries UL, CSA, and CE approvals for global panel acceptance. No ground fault detection on this variant.

MPN
3RV1021-4DA15