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Siemens 3RV2021-1GA10-ZX95 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2021-1GA10-ZX95 SIRIUS Motor Protection Circuit B

MPN3RV2021-1GA10-ZX95
Active

Siemens SIRIUS 3RV2021-1GA10-ZX95 motor protection circuit breaker, Trip Class 10, 45 mm width, screw and snap-on mounting onto 35 mm DIN rail, 100 kA breaking capacity at 400 V AC.

Siemens 3RV2021-1GA10-ZX95 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

3RV2021-1GA10-ZX95 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2021-1GA10-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
3RV2021-1GA10-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
3RV2021-1GA10-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
3RV2021-1GA10-ZX95 — 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
3RV2021-1GA10-ZX95 — 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
3RV2021-1GA10-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
3RV2021-1GA10-ZX95 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

Motor protection circuit breaker for 35 mm DIN rail

The Siemens 3RV2021-1GA10-ZX95 is a SIRIUS motor protection circuit breaker designed for Class 10 trip response, meaning it disconnects within 10 seconds at 7.2× the thermal setting — the standard for protecting standard induction motors during locked-rotor starts. It mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715, with a 45 mm width that fits a standard 2.5-module slot in most panel layouts.

Trip Class 10 and phase-loss protection

Class 10 trip characteristic matches the thermal curve of most IEC standard motors up to about 15 hp at 460/480 V. The built-in phase failure detection trips the breaker if one phase drops out, preventing single-phasing damage on delta-connected loads.

Current production — sourcing posture

It remains a standard catalog item in the SIRIUS 3RV2 family.

MPN
3RV2021-1GA10-ZX95