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Siemens 3RV1321-0CC10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1321-0CC10 SIRIUS Circuit Breaker, 0.25 A, 100 kA

MPN3RV1321-0CC10

Siemens SIRIUS 3RV1321-0CC10 circuit breaker for starter combinations, 3-pole, 0.25 A rated continuous current, 100 kA breaking capacity at 400 V AC, screw terminals, DIN-rail mount, IP20 front.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RV1321-0CC10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1321-0CC10 — Electrical
ParameterValue
Rated voltage690 V
Rated voltage, AC-3 (max.)690 V
Rated impulse withstand voltage (Uimp)6 000 V
Number of poles3
Power loss (AC, hot)5.5 W
Power loss, per pole (AC, hot)1.8 W
3RV1321-0CC10 — Protection & Tripping
ParameterValue
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
Phase-failure detectionNo
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1321-0CC10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1321-0CC10 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementfront side
Conductor cross-section, finely stranded with ferrule2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)
Conductor range, AWG (main contacts)2x (14 ... 10)
3RV1321-0CC10 — Mechanical
ParameterValue
Height97 mm
Width45 mm
Depth96 mm
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Mounting positionany
3RV1321-0CC10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1321-0CC10 — Specifications
ParameterValue
Design Of The Productfor starter combinations

Product details

What this 0.25 A breaker does in your panel

Mounting and wiring — DIN-rail fit

Screw-type terminals on both main and auxiliary/control circuits accept solid or stranded conductors: 2x (1 to 2.5 mm²) or 2x (2.5 to 6 mm²). Zero mm clearance needed backwards or at the sides — you can butt it against adjacent devices without derating spacing.

The 0.25 A continuous current rating is the thermal setting — this breaker trips on overload at that threshold, so it protects a motor drawing roughly 0.06 kW at 400 V (the rated motor power at that voltage). The 100 kA breaking capacity holds across 240 V, 400 V, 500 V, and 690 V AC, giving you full SCCR headroom even on higher-voltage industrial supplies. Operating frequency is limited to 15 switching cycles per hour at AC-3 duty, which is typical for motor-starting applications — not for rapid cycling.

Frequently asked questions

What is the breaking capacity of 3RV1321-0CC10?

100 kA at 240 V, 400 V, 500 V, and 690 V AC. That is the same across the voltage range, so you get full SCCR headroom regardless of your supply voltage.

What terminals does this breaker use?

Screw-type terminals on both the main current circuit and the auxiliary/control circuit. They accept solid or stranded conductors: 2x (1 to 2.5 mm²) or 2x (2.5 to 6 mm²). AWG equivalents are 2x (14 to 10) for the main contacts.

Where can I buy 3RV1321-0CC10 and how is it quoted?

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

What compliance documentation does Siemens provide for 3RV1321-0CC10?

RoHS compliance is confirmed with a substance prohibition date of 01.05.2012. The part carries IP20 finger-safe touch protection on the front and is designed for screw and snap-on mounting to 35 mm DIN rail per EN 50022.

MPN
3RV1321-0CC10