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Siemens 3RV2421-0GA10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2421-0GA10 SIRIUS Circuit Breaker, 100 kA, Size S

MPN3RV2421-0GA10
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Siemens SIRIUS circuit breaker, 3RV2421-0GA10, Size S0, for transformer protection, 100 kA breaking capacity at 400 V AC, Trip Class 10, screw and snap-on mounting on 35 mm DIN rail.

Siemens 3RV2421-0GA10 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RV2421-0GA10 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2421-0GA10 — 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)5.5 W
Power loss, per pole (AC, hot)1.8 W
3RV2421-0GA10 — Protection & Tripping
ParameterValue
Overload release setting range0.45 ... 0.63 A
Instantaneous short-circuit trip current13 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
3RV2421-0GA10 — 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
3RV2421-0GA10 — 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)
3RV2421-0GA10 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth97 mm
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715
Mounting positionany
3RV2421-0GA10 — 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
3RV2421-0GA10 — Specifications
ParameterValue
Design Of The ProductFor transformer protection

Product details

The 3RV2421-0GA10 measures 97 mm deep, 45 mm wide, and 97 mm tall. The screw-type terminals on the main current circuit accept 2x 1 to 2.5 mm² solid or stranded, or 2x 2.5 to 10 mm², with an M4 screw for the main contacts. Screwdriver shaft diameter 5 to 6 mm.

This breaker delivers 100 kA breaking capacity at 240 V, 400 V, 500 V, and 690 V AC — that's a flat 100 kA curve across the common industrial voltages, not a derated number at the high end. At 230 V rated value it's specced at 0.1 kW, at 480 V and 600 V rated value it's 0.63 A — those are the transformer protection coordination points, not the breaker's own rating. The gL/gG fuse backup at 690 V is 6 A.

Frequently asked questions

What is the breaking capacity of 3RV2421-0GA10 at 400 V?

100 kA at 400 V AC, and the same 100 kA holds at 240 V, 500 V, and 690 V AC.

Will 3RV2421-0GA10 drop into a panel specified around 3RV2011-0AA10?

Both are Size S0 frame breakers on 35 mm DIN rail, so the mechanical footprint is the same. But the 3RV2421-0GA10 is a transformer-protection design, not a general motor-protection breaker like the 3RV2011-0AA10 — check the trip curve and phase failure logic before swapping.

What compliance documentation does Siemens provide for 3RV2421-0GA10?

Siemens SIRIUS products typically carry CE, UL, CSA, and IEC certifications, with RoHS and REACH declarations available through the standard documentation portal. Specific certs for this order code should be confirmed at quote time.

Where can I buy 3RV2421-0GA10 and how is it quoted?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here.

MPN
3RV2421-0GA10