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Siemens 3RV1421-4AA10-ZX95 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1421-4AA10-ZX95 SIRIUS Circuit Breaker, 16 A, Cla

MPN3RV1421-4AA10-ZX95

Siemens SIRIUS 3RV1421-4AA10-ZX95, circuit breaker for transformer protection, 16 A rated continuous current, Trip Class 10, 3-pole, screw terminals, 45 x 97 x 96 mm.

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

Specifications

3RV1421-4AA10-ZX95 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1421-4AA10-ZX95 — 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-ZX95 — 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-ZX95 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1421-4AA10-ZX95 — 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-ZX95 — 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-ZX95 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1421-4AA10-ZX95 — Specifications
ParameterValue
Design Of The Productfor transformer protection

Product details

Transformer-protection circuit breaker, 16 A, Class 10

The 45 mm width occupies a single modular unit on the rail. Terminal capacity accepts 2x (1…2.5 mm²) solid or stranded, and 2x (2.5…6 mm²) for larger feeds. Zero clearance required at the back or sides — the breaker can be stacked directly against adjacent devices without derating.

Breaking capacity varies by system 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. At 690 V the 4 kA figure limits application to lower-fault installations or requires upstream current-limiting fuses for full coordination.

Listed as current production. RoHS compliance effective 01.05.2012. The IP20 finger-safe front protection meets touch-protection requirements for enclosed panel mounting. Shock resistance 25g / 11 ms suitable for machinery-mounted applications.

Frequently asked questions

What is the depth of 3RV1421-4AA10-ZX95?

The depth is 96 mm, with zero clearance required at the back or sides.

What compliance documentation does Siemens provide for 3RV1421-4AA10-ZX95?

RoHS compliance effective 01.05.2012. The part carries IP20 finger-safe front protection and is designed for DIN rail mounting per EN 50022. Standard Siemens documentation includes the declaration of conformity and CE marking.

MPN
3RV1421-4AA10-ZX95