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Siemens 3RV1421-4AA10-0BA0 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1421-4AA10-0BA0 SIRIUS Circuit Breaker, 16 A, Cla

MPN3RV1421-4AA10-0BA0

Siemens SIRIUS 3RV1421-4AA10-0BA0, circuit breaker for transformer protection, 3-pole, 16 A, Class 10, screw terminals, 45 mm width.

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

Specifications

3RV1421-4AA10-0BA0 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1421-4AA10-0BA0 — 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)9.25 W
Power loss, per pole (AC, hot)3.1 W
3RV1421-4AA10-0BA0 — Protection & Tripping
ParameterValue
Overload release setting range11 ... 16 A
Trip classCLASS 10
Breaking capacity at 240 V (AC)100 kA
Breaking capacity at 400 V (AC)50 kA
Breaking capacity at 500 V (AC)10 kA
Breaking capacity at 690 V (AC)4 kA
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1421-4AA10-0BA0 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1421-4AA10-0BA0 — 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)
3RV1421-4AA10-0BA0 — 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
3RV1421-4AA10-0BA0 — Environmental
ParameterValue
Operating temperature-50 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1421-4AA10-0BA0 — Specifications
ParameterValue
Design Of The Productfor transformer protection

Product details

The 45 mm wide body snaps onto a 35 mm DIN rail per EN 50022 and accepts screw-type terminals sized for 1 to 6 mm² solid or stranded conductors (2x per pole).

The interrupting capacity varies sharply with line voltage: 100 kA at 240 V AC, 50 kA at 400 V AC, 10 kA at 500 V AC, and 4 kA at 690 V AC.

Mounting, environment, and wiring notes

The breaker can be installed in any orientation — no derating required for horizontal or inverted positions. The front face carries IP20 finger-safe touch protection, so it's suitable for open-panel installations where operators may reach near live parts. Shock resistance is 25 g for 11 ms, which covers most industrial vibration environments including conveyor drives and compressor skids.

MPN
3RV1421-4AA10-0BA0