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Siemens 3RV2021-1GA25 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2021-1GA25 SIRIUS Motor Protection Circuit Breake

MPN3RV2021-1GA25
Active

Siemens SIRIUS motor protection circuit breaker, 3RV2021-1GA25, 6.3 A rated current at 480/600 V, 100 kA breaking capacity at 400 V, CLASS 10 trip, spring-loaded terminals, screw and snap-on 35 mm DIN rail mounting.

Siemens 3RV2021-1GA25 datasheet (PDF)
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

3RV2021-1GA25 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2021-1GA25 — Electrical
ParameterValue
Rated operational current (Ie)6.3 A
Rated voltage20 ... 690 V
Rated voltage, AC-3 (max.)690 V
Rated frequency50 ... 60 Hz
Rated insulation voltage (Ui), pollution degree 3690 V
Rated impulse withstand voltage (Uimp)6 kV
Number of poles3
Power loss (AC, hot)7.25 W
Power loss, per pole (AC, hot)2.4 W
3RV2021-1GA25 — Protection & Tripping
ParameterValue
Overload release setting range4.5 ... 6.3 A
Instantaneous short-circuit trip current82 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
Breaking capacity at 240 V100 kA
Breaking capacity at 690 V4 kA
Short-circuit trip typemagnetic
Overload release typethermal
Short-circuit protectionYes
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2021-1GA25 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)100 000
Endurance, auxiliary contacts (typ.)100 000
Switching frequency, AC-3 (max.)15 1/h
Auxiliary CO (changeover) contacts0
3RV2021-1GA25 — Connections
ParameterValue
Main-circuit terminal typespring-loaded terminals
Main-circuit connector arrangementTop and bottom
Conductor cross-section, solid / stranded2x (0.5 ... 2.5 mm²)
Conductor cross-section, finely stranded with ferrule2x (0.5 ... 1.5 mm²)
Conductor range, AWG (main contacts)2x (18 ... 8)
3RV2021-1GA25 — Mechanical
ParameterValue
Height119 mm
Width45 mm
Depth97 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Mounting positionany
3RV2021-1GA25 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Relative humidity (operation)10 ... 95 %
Max. installation altitude2 000 m
3RV2021-1GA25 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

Motor protection circuit breaker, SIRIUS series — 3RV2021-1GA25

It carries a rated current of 6.3 A at both 480 V and 600 V, with a massive 100 kA breaking capacity at 400 V, 480 V, and 500 V — that means it can safely interrupt a fault current up to 100,000 A without welding contacts or cascading damage upstream.

Termination and mounting

Main circuit connections use spring-loaded terminals, accepting 2x (0.5... 2.5 mm²) solid or stranded wire — no screw torque to verify, just strip and insert.

Protection features and ratings

Ground fault detection is not included, so pair this breaker with a separate ground-fault relay if that's required. Rated operational voltage spans 20... 690 V.

Frequently asked questions

What is the breaking capacity of 3RV2021-1GA25?

100 kA at 400 V, 480 V, and 500 V; 4 kA at 690 V. That 100 kA rating means it can safely interrupt a fault current up to 100,000 A without welding or upstream damage.

Will 3RV2021-1GA25 drop into a panel specified for 3RV2021-1FA15?

Both are 45 mm wide SIRIUS motor protection breakers on the same DIN-rail footprint, so the mechanical fit is identical. The difference is in the trip curve and rating — confirm the 1FA15's specific current and breaking capacity match your load before swapping.

Where can I buy 3RV2021-1GA25?

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

MPN
3RV2021-1GA25