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Siemens 3RV2031-4UA15 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV2031-4UA15 SIRIUS Motor Protection Circuit Breake

MPN3RV2031-4UA15
Active

Siemens SIRIUS 3RV2031-4UA15 motor protection circuit breaker, Class 10, 30 kA interrupting capacity at 400 V, screw and snap-on 35 mm DIN rail mount, phase failure detection.

$109.22Ref. price · indicative, final on quote
Siemens 3RV2031-4UA15 datasheet (PDF)
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

3RV2031-4UA15 — Identification
ParameterValue
SeriesSIRIUS
Product designationCircuit breaker
Frame sizeS2
3RV2031-4UA15 — Electrical
ParameterValue
Rated operational current (Ie)40 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)20 W
Power loss, per pole (AC, hot)6.7 W
3RV2031-4UA15 — Protection & Tripping
ParameterValue
Overload release setting range32 ... 40 A
Instantaneous short-circuit trip current585 A
Trip classCLASS 10
Breaking capacity at 240 V (AC)100 kA
Breaking capacity at 400 V (AC)65 kA
Breaking capacity at 500 V (AC)10 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
3RV2031-4UA15 — Endurance & Switching
ParameterValue
Endurance, main contacts (typ.)50 000
Endurance, auxiliary contacts (typ.)50 000
Switching frequency, AC-3 (max.)15 1/h
3RV2031-4UA15 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals
Main-circuit connector arrangementTop and bottom
Conductor cross-section, solid / stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section, finely stranded with ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor range, AWG (main contacts)2x (18 ... 3), 1x (18 ... 2)
3RV2031-4UA15 — 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
3RV2031-4UA15 — 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
3RV2031-4UA15 — Specifications
ParameterValue
Design Of The ProductFor motor protection

Product details

Motor protection circuit breaker — SIRIUS 3RV2031-4UA15

Rated operational voltage spans 20 to 690 V. Short-circuit breaking capacity at 400 V is 30 kA — sufficient for most industrial distribution panels with typical transformer sizes. At 690 V it still interrupts 2 kA, covering drive input protection in 690 V line applications.

Any mounting position allowed. Dimensions: 55 mm wide, 140 mm tall, 149 mm deep — fits standard 55 mm modular device slot on the rail. Side clearance of 10 mm and vertical clearance of 50 mm (upwards and downwards) for heat dissipation and arc venting. Main contact terminals accept M6 bolts; solid or stranded conductors up to 2x 2.5 mm² per clamp.

Current production lifecycle stage per Siemens.

MPN
3RV2031-4UA15