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Siemens 3RV2021-1GA20-ZX95 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2021-1GA20-ZX95 SIRIUS Motor Protection Circuit B

MPN3RV2021-1GA20-ZX95
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Siemens SIRIUS 3RV2021-1GA20-ZX95 motor protection circuit breaker, 100 kA breaking capacity at 400 V AC, Class 10 trip, spring-loaded terminals, 45 mm wide.

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

3RV2021-1GA20-ZX95 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2021-1GA20-ZX95 — 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
3RV2021-1GA20-ZX95 — 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
3RV2021-1GA20-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
3RV2021-1GA20-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)
3RV2021-1GA20-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
3RV2021-1GA20-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
3RV2021-1GA20-ZX95 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

It's designed for the main current circuit of a motor branch, providing short-circuit and overload protection in one package. At 480 V AC it still holds 100 kA; at 690 V AC it's rated 4 kA.

Mounting position is any. Clearance requirements: 50 mm above and below, 30 mm to the side, zero forward or backward. That's tight enough for dense panels but the 50 mm vertical gap matters for heat dissipation from the bimetal trip element.

Termination and wiring

No screw torque to verify — just strip and push. That saves a few minutes per termination on a multi-motor panel.

Current production — no end-of-life notice. This is the standard SIRIUS 3RV2 generation.

MPN
3RV2021-1GA20-ZX95