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Siemens 3RV2031-4JB10 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2031-4JB10 SIRIUS Motor Protection Circuit Breake

MPN3RV2031-4JB10
Active

Siemens SIRIUS motor protection circuit breaker, 3RV2031-4JB10, 18.5 kW at 230 V, 30 kA breaking capacity at 400 V, Trip Class 20, phase failure detection, screw and snap-on mounting onto 35 mm DIN rail.

$135.89Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RV2031-4JB10 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS2
3RV2031-4JB10 — Electrical
ParameterValue
Rated operational current (Ie)65 A
Rated voltage20 ... 690 V
Rated voltage, AC-3 (max.)690 V
Rated frequency50 ... 60 Hz
Rated insulation voltage (Ui), pollution degree 3690 V
Rated impulse withstand voltage (Uimp)6 kV
Number of poles3
Power loss (AC, hot)26 W
Power loss, per pole (AC, hot)8.7 W
3RV2031-4JB10 — Protection & Tripping
ParameterValue
Overload release setting range54 ... 65 A
Instantaneous short-circuit trip current845 A
Trip classCLASS 20
Breaking capacity at 240 V (AC)65 kA
Breaking capacity at 400 V (AC)65 kA
Breaking capacity at 500 V (AC)8 kA
Breaking capacity at 690 V (AC)4 kA
Breaking capacity at 240 V100 kA
Breaking capacity at 690 V2 kA
Short-circuit trip typemagnetic
Overload release typethermal
Short-circuit protectionYes
Phase-failure detectionYes
Ground-fault detectionNo
Auxiliary switch extendableYes
3RV2031-4JB10 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)20 000
Endurance, auxiliary contacts (typ.)20 000
Switching frequency, AC-3 (max.)15 1/h
3RV2031-4JB10 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementTop and bottom
Conductor cross-section, solid / stranded2x (1 ... 35 mm²), 1x (1 ... 50 mm²)
Conductor cross-section, finely stranded with ferrule2x (1 ... 25 mm²), 1x (1 ... 35 mm²)
Conductor range, AWG (main contacts)2x (18 ... 2), 1x (18 ... 1)
3RV2031-4JB10 — Mechanical
ParameterValue
Height140 mm
Width55 mm
Depth149 mm
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Mounting positionany
3RV2031-4JB10 — 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
3RV2031-4JB10 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

The motor power rating at 230 V is 18.5 kW, and at 460/480 V it's 50 hp. Trip Class 20 means it allows a 20-second overload before tripping — sized for standard induction motor starts without nuisance trips on inrush. No ground fault detection on this variant.

Screw-type terminals on the main current circuit accept 2x 1–35 mm² or 1x 1–50 mm² solid or stranded wire. The M6 main contact screws are standard for this class. At 400 V, no clearance is required upwards; at 500 V it's 125 mm, at 690 V it's 100 mm.

Frequently asked questions

How do I get current pricing and availability for 3RV2031-4JB10?

Submit an RFQ against this order code. We source through independent distribution and confirm pricing and lead time at quote time.

Will 3RV2031-4JB10 drop into a panel that was specified around 3RV2031-4RA15 without rewiring?

Both are SIRIUS motor protection circuit breakers with the same DIN-rail mounting and terminal style, but the 4RA15 variant may have different trip ratings or breaking capacities. Check the specific ratings on your panel drawing — the mechanical footprint is the same, but the electrical settings may differ.

What compliance documentation does this brand provide for 3RV2031-4JB10?

Siemens typically provides RoHS, REACH, and UL/IEC compliance documentation for SIRIUS circuit breakers. Specific certificates are available on request with an RFQ.

MPN
3RV2031-4JB10