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Siemens 3RV2321-1DC10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2321-1DC10 SIRIUS Circuit Breaker, 100 kA at 400

MPN3RV2321-1DC10
Active

Siemens SIRIUS 3RV2321-1DC10 circuit breaker for starter combinations, 45 mm width, 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 3RV2321-1DC10 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RV2321-1DC10 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS0
3RV2321-1DC10 — Electrical
ParameterValue
Rated operational current (Ie)3.2 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
3RV2321-1DC10 — Protection & Tripping
ParameterValue
Instantaneous short-circuit trip current42 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)10 kA
Breaking capacity at 240 V100 kA
Breaking capacity at 690 V10 kA
Short-circuit trip typemagnetic
Short-circuit protectionYes
Phase-failure detectionNo
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2321-1DC10 — 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
3RV2321-1DC10 — 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)
3RV2321-1DC10 — 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
3RV2321-1DC10 — 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
3RV2321-1DC10 — Specifications
ParameterValue
Design Of The ProductFor starter combinations

Product details

Its headline breaking capacity of 100 kA at 400 V AC and at 240 V AC and 500 V AC means it safely interrupts fault currents up to that level without cascading upstream — critical for panel SCCR compliance under IEC 60947-2 and UL 508A. Clearance requirements: 50 mm upwards and downwards, 30 mm at the side, zero forwards or backwards. This allows tight panel packing in multi-circuit motor control centers, but the side clearance must be observed for arc-flash containment and heat dissipation.

Deployment context

The screw-type terminals for the main current circuit accept 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²) solid or stranded conductors, sized for motor branch circuits up to 2 hp at 460/480 V or 575/600 V. No ground-fault or phase-failure detection built in — those functions must be handled by the upstream protection or a separate relay.

Frequently asked questions

What is the breaking capacity of 3RV2321-1DC10 at 400 V?

100 kA at 400 V AC, also 100 kA at 240 V AC and 500 V AC, dropping to 10 kA at 690 V AC.

What are the mounting dimensions for 3RV2321-1DC10?

Width 45 mm, depth 97 mm, height 97 mm. Requires 50 mm clearance upwards and downwards, 30 mm at the side, zero forwards or backwards. Mounts on 35 mm DIN rail per DIN EN 60715.

Where can I buy 3RV2321-1DC10?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3RV2321-1DC10