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Siemens 3RV2021-0GA10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2021-0GA10 SIRIUS Motor Protection Circuit Breake

MPN3RV2021-0GA10
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Siemens SIRIUS 3RV2021-0GA10, motor protection circuit breaker, size S0, Trip Class 10, 100 kA breaking capacity at 400 V AC, screw and snap-on mounting onto 35 mm DIN rail.

Siemens 3RV2021-0GA10 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RV2021-0GA10 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2021-0GA10 — Electrical
ParameterValue
Rated operational current (Ie)0.63 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
3RV2021-0GA10 — Protection & Tripping
ParameterValue
Overload release setting range0.45 ... 0.63 A
Instantaneous short-circuit trip current8.2 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)100 kA
Breaking capacity at 240 V100 kA
Breaking capacity at 690 V100 kA
Short-circuit trip typemagnetic
Overload release typethermal
Short-circuit protectionYes
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2021-0GA10 — 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
3RV2021-0GA10 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementTop and bottom
Conductor cross-section, solid / stranded2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)
Conductor cross-section, finely stranded with ferrule2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 mm²
Conductor range, AWG (main contacts)2x (16 ... 12), 2x (14 ... 8)
3RV2021-0GA10 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth97 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Mounting positionany
3RV2021-0GA10 — 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
3RV2021-0GA10 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

The 45 mm width (matching the S0 frame) means it occupies one standard 45 mm module slot on the rail — plan your enclosure fill accordingly. Clearance requirements: 50 mm upwards and downwards to adjacent metal parts, 30 mm at the sides, and zero forwards or backwards — so you can butt it against the back panel or enclosure door without derating.

Main circuit terminals are screw-type, accepting 2 × 1 to 2.5 mm² or 2 × 2.5 to 10 mm² solid or stranded copper. The screwdriver shaft diameter should be 5 to 6 mm, with a Pozidriv size 2 tip. Main contact terminal screws are M4.

Frequently asked questions

Where can I buy 3RV2021-0GA10 and how is it quoted?

This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time.

Will 3RV2021-0GA10 drop into a panel specified around 3RV2011-0AA10 without rewiring?

Both breakers share the same S0 frame size (45 mm width) and mount on 35 mm DIN rail, so the mechanical footprint is identical. However, the 3RV2021-0GA10 has a different overload setting range and breaking capacity; verify the thermal setting matches your motor FLA before swapping.

What is the breaking capacity of 3RV2021-0GA10 at 400 V?

It is rated for 100 kA at 400 V AC, which is the same at 240 V, 500 V, and 690 V AC — consistent across the full voltage range.

MPN
3RV2021-0GA10