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Siemens 3RV2142-4MA10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2142-4MA10 SIRIUS Motor Protection Circuit Breake

MPN3RV2142-4MA10
Active

Siemens SIRIUS, circuit breaker for motor protection with overload relay function, 3RV2142-4MA10, 50 kA at 400 V, Trip Class 10, screw terminals, 90 mm width.

Siemens 3RV2142-4MA10 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RV2142-4MA10 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS3
3RV2142-4MA10 — Electrical
ParameterValue
Rated operational current (Ie)100 A
Rated voltage20 ... 690 V
Rated voltage, AC-3 (max.)690 V
Rated frequency50 ... 60 Hz
Rated insulation voltage (Ui), pollution degree 31 000 V
Rated impulse withstand voltage (Uimp)8 kV
Number of poles3
Power loss (AC, hot)44 W
Power loss, per pole (AC, hot)14.7 W
3RV2142-4MA10 — Protection & Tripping
ParameterValue
Overload release setting range80 ... 100 A
Instantaneous short-circuit trip current1 300 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)10 kA
Breaking capacity at 690 V (AC)6 kA
Breaking capacity at 240 V100 kA
Breaking capacity at 690 V3 kA
Short-circuit trip typemagnetic
Overload release typethermal
Short-circuit protectionYes
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2142-4MA10 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)25 000
Endurance, auxiliary contacts (typ.)25 000
Switching frequency, AC-3 (max.)15 1/h
3RV2142-4MA10 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementTop and bottom
Conductor cross-section, solid / stranded2x (2,5 ... 50 mm²), 1x (10 ... 70 mm²)
Conductor cross-section, finely stranded with ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
3RV2142-4MA10 — Mechanical
ParameterValue
Height165 mm
Width90 mm
Depth176 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Mounting positionany
3RV2142-4MA10 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Relative humidity (operation)10 ... 95 %
Max. installation altitude2 000 m
3RV2142-4MA10 — Specifications
ParameterValue
Design Of The ProductFor motor protection with overload relay function

Product details

Screw-type terminals on the main circuit accept solid or stranded conductors up to 2× (2.5…50 mm²) or 1× (10…70 mm²) — sized for motor feeders up to 100 A at 600 V. Minimum clearances: 150 mm upwards and downwards, 30 mm at the sides, 0 mm forwards and backwards.

Current-production status confirmed — this is an active SIRIUS catalog line, not a phase-out or obsolete part. For a BOM freeze or line-down replacement, this part is a direct drop-in for existing SIRIUS 3RV2 panel designs.

Key protection features

No ground-fault detection on this variant. Rated operational voltage range 20…690 V. Switching frequency at AC-3 duty: 15 operations per hour maximum.

Frequently asked questions

Where can I buy the 3RV2142-4MA10 and get a price?

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

What is the breaking capacity of the 3RV2142-4MA10 at 400 V?

50 kA at 400 V AC — sufficient for most industrial panel fault-current levels without upstream fuses.

Does the 3RV2142-4MA10 include overload protection?

Yes, it combines motor protection circuit breaker and overload relay function in one device, with Trip Class 10 characteristic.

What terminal capacity does the 3RV2142-4MA10 have?

Screw terminals accept 2× (2.5…50 mm²) or 1× (10…70 mm²) solid or stranded conductors on the main circuit.

MPN
3RV2142-4MA10