Skip to main content
Log in
Siemens 3RV2042-4HA10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2042-4HA10 SIRIUS Motor Protection Circuit Breake

MPN3RV2042-4HA10
Active

Siemens SIRIUS 3RV2042-4HA10 motor protection circuit breaker, CLASS 10, 50 kA interrupting at 400 V AC, screw-type terminals, 70 x 165 x 176 mm.

Siemens 3RV2042-4HA10 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RV2042-4HA10 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS3
3RV2042-4HA10 — Electrical
ParameterValue
Rated operational current (Ie)50 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)27 W
Power loss, per pole (AC, hot)9 W
3RV2042-4HA10 — Protection & Tripping
ParameterValue
Overload release setting range36 ... 50 A
Instantaneous short-circuit trip current650 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)15 kA
Breaking capacity at 690 V (AC)10 kA
Breaking capacity at 240 V100 kA
Breaking capacity at 690 V5 kA
Short-circuit trip typemagnetic
Overload release typethermal
Short-circuit protectionYes
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2042-4HA10 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)25 000
Endurance, auxiliary contacts (typ.)25 000
Switching frequency, AC-3 (max.)15 1/h
3RV2042-4HA10 — 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 (2.5 ... 35 mm²), 1x (2.5 ... 50 mm²)
3RV2042-4HA10 — Mechanical
ParameterValue
Height165 mm
Width70 mm
Depth176 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Mounting positionany
3RV2042-4HA10 — 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
3RV2042-4HA10 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

The breaker detects phase failure and operates over a rated voltage range of 20 to 690 V. It mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 60715, fitting into standard panel layouts with a 70 x 165 x 176 mm footprint.

Interrupting Ratings & Motor Protection

The interrupting capacity varies by voltage: 100 kA at 240 V AC, 100 kA at 400 V AC, 15 kA at 500 V AC, and 10 kA at 690 V AC. For motor loads, the breaker is rated for 10 hp at 230 V, 20 hp at 220/230 V, 40 hp at 460/480 V, and 50 hp at 575/600 V. The maximum switching frequency is 15 operations per hour at AC-3 duty, which covers most conveyor and pump applications without derating.

Termination & Clearances

The auxiliary circuit accepts 2x (2.5 to 50 mm²) solid or 1x (10 to 70 mm²) stranded.

Frequently asked questions

What is the interrupting capacity of 3RV2042-4HA10 at 400 V?

At 400 V AC, the interrupting capacity is 100 kA.

What is the closest functional second-source to 3RV2042-4HA10?

The peer 3RV2142-4MA10 is a close functional second-source, but verify terminal ratings and interrupting capacity for your specific voltage — the 3RV2042-4HA10 offers 100 kA at 400 V AC, which may differ from the peer.

Where can I buy 3RV2042-4HA10 and how is it quoted?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3RV2042-4HA10