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Siemens 3RV1431-4FA10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1431-4FA10 SIRUS Circuit Breaker, 40 A, CLASS 10

MPN3RV1431-4FA10

Siemens SIRIUS, circuit breaker for transformer protection, 3RV1431-4FA10, 40 A continuous, CLASS 10 trip class, 100 kA SCCR at 240 V AC, screw terminals, DIN rail mount.

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

Specifications

3RV1431-4FA10 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1431-4FA10 — 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)29 W
Power loss, per pole (AC, hot)9.7 W
3RV1431-4FA10 — Protection & Tripping
ParameterValue
Overload release setting range28 ... 40 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
3RV1431-4FA10 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1431-4FA10 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals with box terminals
Main-circuit connector arrangementfront side
Conductor cross-section, finely stranded with ferrule2x (0.75 ... 16 mm²), 0.75 ... 25 mm²
3RV1431-4FA10 — Mechanical
ParameterValue
Height140 mm
Width55 mm
Depth149 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022
Mounting positionany
3RV1431-4FA10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1431-4FA10 — Specifications
ParameterValue
Design Of The Productfor transformer protection

Product details

SIRIUS 3RV1431-4FA10 — Transformer-Protection Circuit Breaker

Rated 690 V max, with breaking capacities of 100 kA at 240 V AC, 50 kA at 400 V, 10 kA at 500 V, and 4 kA at 690 V.

Dimensions are 55 mm wide × 140 mm high × 149 mm deep — a standard SIRIUS footprint that leaves zero clearance needed at the sides or rear for heat dissipation. Wiring terminals on the main circuit are screw-type box terminals accepting 2× (0.75…16 mm²) solid or 2× (0.75…25 mm²) stranded, with a single 35 mm² stranded conductor also allowed. The auxiliary/control circuit uses separate screw terminals. This breaker is designed to be ganged directly alongside other SIRIUS components on the same DIN rail, with no spacing required.

The 6,000 V surge voltage resistance (impulse withstand) means it coordinates with standard downstream contactors and overloads in a Type 1 or Type 2 coordination scheme. Operating frequency is limited to 15 operations per hour at AC-3 duty — fine for transformer primary switching, not for frequent motor starting. Shock resistance is 25g for 11 ms.

Frequently asked questions

What is 3RV1431-4FA10 used for?

It is a circuit breaker designed for transformer protection — the CLASS 10 trip characteristic and phase failure detection make it suited for isolating and protecting the primary side of control transformers and similar inductive loads.

What is the SCCR of 3RV1431-4FA10 at different voltages?

100 kA at 240 V AC, 50 kA at 400 V, 10 kA at 500 V, and 4 kA at 690 V. These are the interrupting ratings at the respective voltages.

Where can I buy 3RV1431-4FA10?

Sourced to order through independent distribution channels. Submit an RFQ for current availability and pricing — stock positions and lead times are confirmed at quote time.

What compliance documentation does 3RV1431-4FA10 carry?

RoHS compliance with a substance prohibitance date of July 1, 2006. The SIRIUS series is typically UL/CSA/CE certified, though specific agency marks should be verified on the nameplate for your jurisdiction.

MPN
3RV1431-4FA10