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Siemens 3RV2021-0GA20-ZX95 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2021-0GA20-ZX95 SIRIUS Motor Protection Circuit B

MPN3RV2021-0GA20-ZX95
Active

Siemens SIRIUS motor protection circuit breaker, Size S0, 3RV2021-0GA20-ZX95, Trip Class 10, 100 kA breaking capacity at 400 V AC, screw and snap-on 35 mm DIN rail mounting.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RV2021-0GA20-ZX95 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2021-0GA20-ZX95 — 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
3RV2021-0GA20-ZX95 — 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
3RV2021-0GA20-ZX95 — 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
3RV2021-0GA20-ZX95 — Connections
ParameterValue
Main-circuit terminal typespring-loaded terminals
Main-circuit connector arrangementTop and bottom
Conductor cross-section, solid / stranded2x (1 ... 10 mm²)
Conductor cross-section, finely stranded with ferrule2x (1 ... 6 mm²)
3RV2021-0GA20-ZX95 — 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
3RV2021-0GA20-ZX95 — 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
3RV2021-0GA20-ZX95 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

The AC-3 rated voltage tops out at 690 V, covering 400 V and 480 V motor circuits common in European and North American industrial plants. No ground fault detection on this variant; that's a separate accessory path.

Mounting position any, so vertical or horizontal rail orientation works. Clearance: 50 mm upwards, 50 mm downwards, 30 mm at the side; zero forwards or backwards — no extra breathing space needed beyond the device envelope. Screwdriver shaft diameter 3 mm, tip size 3.0 x 0.5 mm. Strip length not stated in the spec, but 8–10 mm is typical for this terminal class. Dimensions: 45 mm wide, 119 mm high, 97 mm deep.

Operating conditions

Rated operational voltage span 20 to 690 V. At AC-3 duty (motor switching), the maximum switching rate is 15 operations per hour. At AC-3e (enhanced motor switching) the same 15 1/h limit applies.

Frequently asked questions

What is the depth of 3RV2021-0GA20-ZX95?

The depth is 97 mm. The width is 45 mm and height is 119 mm.

MPN
3RV2021-0GA20-ZX95