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Siemens 3RV1021-1GA10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1021-1GA10 SIRIUS Motor Protection Circuit Breake

MPN3RV1021-1GA10

Siemens SIRIUS motor protection circuit breaker, 3RV1021-1GA10, 6.3 A continuous, CLASS 10, 100 kA breaking at 400 V, screw terminals, 45 mm wide.

$45.72Ref. price · indicative, final on quote
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

3RV1021-1GA10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1021-1GA10 — 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
3RV1021-1GA10 — Protection & Tripping
ParameterValue
Overload release setting range4.5 ... 6.3 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)100 kA
Breaking capacity at 690 V (AC)6 kA
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1021-1GA10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1021-1GA10 — 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)
3RV1021-1GA10 — 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
3RV1021-1GA10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1021-1GA10 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

The Siemens 3RV1021-1GA10 is a SIRIUS motor protection circuit breaker rated for 6.3 A continuous current, designed to protect three-phase motors up to 2.2 kW at 400 V.

Breaking capacity — what the ratings mean

This breaker delivers 100 kA breaking capacity at 240 V, 400 V, and 500 V AC — meaning it can safely interrupt a fault current up to 100,000 A at those voltages without welding contacts or cascading failure upstream. The 100 kA rating at 400 V covers most industrial panel bus conditions, so downstream coordination is straightforward.

Any mounting position is allowed, with 0 mm clearance required at the rear and sides.

Key protection features

Ground fault detection is not included, so a separate ground-fault relay is needed for that function. The auxiliary switch option is available for remote status indication. Finger-safe touch protection is standard on the front terminals.

Shock rated at 25 g for 11 ms. The RoHS compliance date is May 1, 2012, covering substance prohibitions under EU Directive 2011/65/EU.

Frequently asked questions

Where can I buy 3RV1021-1GA10 and how is it quoted?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer.

What is the breaking capacity of 3RV1021-1GA10 at 400 V?

100 kA at 400 V AC, which covers most industrial panel bus fault conditions without requiring upstream current-limiting fuses.

Does 3RV1021-1GA10 include phase failure protection?

Yes, phase failure detection is standard. If one phase drops, the breaker trips to prevent motor damage from single-phasing. Ground fault detection is not built in.

What compliance documentation is available for 3RV1021-1GA10?

RoHS compliant per EU Directive 2011/65/EU with a substance prohibition date of May 1, 2012. The part carries IP20 finger-safe protection on the front. Standard Siemens documentation includes the declaration of conformity and technical data sheet.

What is the closest functional alternative to 3RV1021-1GA10?

The 3RV2021-1GA15 is the next-step-up sibling in the SIRIUS family — same form factor and DIN rail mount, but rated for a higher continuous current. Check the specific rating difference before substituting; the 3RV1021-1GA10 is the 6.3 A variant, while the 3RV2021-1GA15 serves a higher current point. Both share the same trip class and breaking capacity profile.

MPN
3RV1021-1GA10