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Siemens 3RV2321-1GC10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2321-1GC10 SIRIUS Circuit Breaker, 100 kA at 400

MPN3RV2321-1GC10
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Siemens SIRIUS 3RV2321-1GC10 circuit breaker for starter combinations, 45 mm wide, 100 kA breaking capacity at 400 V AC, screw and snap-on mounting onto 35 mm DIN rail.

$35.56Ref. price · indicative, final on quote
Siemens 3RV2321-1GC10 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RV2321-1GC10 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2321-1GC10 — 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
3RV2321-1GC10 — Protection & Tripping
ParameterValue
Instantaneous short-circuit trip current82 A
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
Short-circuit protectionYes
Phase-failure detectionNo
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2321-1GC10 — 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
3RV2321-1GC10 — 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)
3RV2321-1GC10 — 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
3RV2321-1GC10 — 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
3RV2321-1GC10 — Specifications
ParameterValue
Design Of The ProductFor starter combinations

Product details

The Siemens 3RV2321-1GC10 is a SIRIUS-brand circuit breaker designed specifically for starter combinations — meaning it integrates the motor-protective and short-circuit functions into one device sized for a motor starter assembly. That 100 kA SCCR figure holds at 240 V, 400 V, and 500 V AC, tapering to 4 kA at 690 V AC — so for most European 400 V distribution, it delivers full rated interruption.

The 45 mm width (three module spaces) and 97 mm depth fit standard enclosure grids. Clearance requirements: 50 mm above and below, 30 mm to the side, zero forward or backward — so you can pack it tightly front-to-back in a shallow gland plate layout.

Frequently asked questions

Where can I buy 3RV2321-1GC10 and get a price?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment.

Will 3RV2321-1GC10 drop into a panel specified for 3RV2021-1GA15 without rewiring?

Both are SIRIUS circuit breakers on the same 45 mm DIN-rail footprint with screw terminals for the main circuit. The 3RV2021-1GA15 is a lower-breaking-capacity sibling (typically 50 kA class), so the 3RV2321-1GC10 upgrades the SCCR to 100 kA at 400 V. Mechanical fit and terminal layout are the same — no rewiring required.

What are the key ratings for 3RV2321-1GC10?

100 kA breaking capacity at 400 V AC, 45 mm width, screw and snap-on mounting on 35 mm DIN rail, rated for ambient operation from -20 to +60 °C.

MPN
3RV2321-1GC10