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Siemens 3RV1021-1JA15 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-1JA15 SIRIUS Motor Protection Circuit Breake

MPN3RV1021-1JA15

Siemens SIRIUS 3RV1021-1JA15 motor protection circuit breaker, 10 A continuous, CLASS 10 trip, 100 kA breaking capacity at 400 V AC, screw-type terminals, IP20 front, 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

3RV1021-1JA15 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-1JA15 — 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
3RV1021-1JA15 — Protection & Tripping
ParameterValue
Overload release setting range7 ... 10 A
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
Auxiliary switch extendableYes
3RV1021-1JA15 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1021-1JA15 — 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)
3RV1021-1JA15 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022
Mounting positionany
3RV1021-1JA15 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1021-1JA15 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

The Siemens 3RV1021-1JA15 is a SIRIUS motor protection circuit breaker rated for 10 A continuous current with a CLASS 10 trip characteristic, meaning it trips within 10 seconds at 7.2× rated current — fast enough to protect standard induction motors during locked-rotor conditions without nuisance tripping on normal starts.

Screw-type terminals for main and auxiliary circuits accept solid conductors 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). IP20 on the front — suitable for enclosed panels where the front is operator-accessible but not exposed to washdown or dust.

Frequently asked questions

Where can I buy 3RV1021-1JA15 and how is it quoted?

The 3RV1021-1JA15 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the breaking capacity of 3RV1021-1JA15 at 400 V?

The breaking capacity is 100 kA at 400 V AC, allowing it to clear high fault currents without upstream fusing in most industrial panels.

Does 3RV1021-1JA15 detect phase failure?

Yes, phase failure detection is built in — it opens the circuit if one phase drops, protecting the motor from single-phasing.

MPN
3RV1021-1JA15