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Siemens 3RV1421-1JA10-ZX95 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1421-1JA10-ZX95 SIRIUS Circuit Breaker, 10 A, Cla

MPN3RV1421-1JA10-ZX95

Siemens SIRIUS, circuit breaker for transformer protection, 3RV1421-1JA10-ZX95, 10 A continuous, Class 10 trip, 100 kA breaking at 400 V AC, screw terminals, IP20 front.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RV1421-1JA10-ZX95 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1421-1JA10-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
3RV1421-1JA10-ZX95 — Protection & Tripping
ParameterValue
Overload release setting range7 ... 10 A
Trip classCLASS 10
Breaking capacity at 240 V (AC)100 kA
Breaking capacity at 400 V (AC)100 kA
Breaking capacity at 500 V (AC)42 kA
Breaking capacity at 690 V (AC)6 kA
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV1421-1JA10-ZX95 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1421-1JA10-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)
3RV1421-1JA10-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
3RV1421-1JA10-ZX95 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1421-1JA10-ZX95 — Specifications
ParameterValue
Design Of The Productfor transformer protection

Product details

Rated insulation voltage is 690 V, and the breaking capacity reaches 100 kA at 400 V AC, 100 kA at 240 V AC, 42 kA at 500 V AC, and 6 kA at 690 V AC — figures that determine the maximum fault current it can safely interrupt at each voltage level.

Dimensions are 45 mm width, 97 mm height, and 96 mm depth, with zero clearance required at the back or sides — useful when packing multiple units on a DIN rail in a crowded enclosure. Front protection class is IP20; the housing is finger-safe for touch protection against electrical shock, which matters for panel access without full de-energization during troubleshooting.

Lifecycle stage is current production — this part is still in active manufacture per the manufacturer's status. Shock resistance is 25 g for 11 ms. RoHS compliance date is 01.05.2012; the part is free of substances prohibited under that directive as of that date.

Main circuit terminals accept solid or stranded conductors: 2x (1 to 2.5 mm²) and 2x (2.5 to 6 mm²), with AWG equivalents of 2x (14 to 10). Finely stranded with core end processing uses the same ranges. Power dissipation at AC in hot operating state is 9.25 W total, or 3.1 W per pole — a figure to check against enclosure thermal budgets when grouping multiple breakers.

Frequently asked questions

What compliance documentation is available for this part?

RoHS compliance is confirmed with a substance prohibition date of 01.05.2012. The front is IP20 rated and finger-safe for touch protection.

MPN
3RV1421-1JA10-ZX95