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Siemens 3RV1031-4FB15-ZW97 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1031-4FB15-ZW97 SIRIUS Motor Protection Circuit B

MPN3RV1031-4FB15-ZW97

Siemens SIRIUS, motor protection circuit breaker, 3RV1031-4FB15-ZW97, 40 A continuous, CLASS 20, 50 kA at 400 V AC, phase failure detection, screw terminals, DIN rail snap-on.

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

3RV1031-4FB15-ZW97 — Identification
ParameterValue
SeriesSIRIUS
Product designationcircuit breaker
3RV1031-4FB15-ZW97 — 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
3RV1031-4FB15-ZW97 — Protection & Tripping
ParameterValue
Overload release setting range28 ... 40 A
Trip classCLASS 20
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
3RV1031-4FB15-ZW97 — Endurance & Switching
ParameterValue
Auxiliary CO (changeover) contacts0
3RV1031-4FB15-ZW97 — Connections
ParameterValue
Main-circuit terminal typescrew-type terminals with box terminals
Main-circuit connector arrangementfront side
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 ... 2), 1x (18 ... 2)
3RV1031-4FB15-ZW97 — Mechanical
ParameterValue
Height140 mm
Width55 mm
Depth149 mm
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Mounting positionany
3RV1031-4FB15-ZW97 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C
Transport temperature-50 ... +80 °C
Max. installation altitude2 000 m
3RV1031-4FB15-ZW97 — Specifications
ParameterValue
Design Of The Productfor motor protection

Product details

Rated 18.5 kW at 400 V AC with a breaking capacity of 50 kA at 400 V and 100 kA at 240 V, this breaker handles fault currents up to those levels without cascading upstream — critical for panel SCCR compliance under IEC 60947-2.

Snaps onto 35 mm DIN rail per DIN EN 50022; screw and snap-on fastening method means no tools needed for the rail, but the main circuit terminals are screw-type with box terminals accepting 2x (0.75... 25 mm²) stranded or 1x (0.75 … 35 mm²) — expect a screwdriver for the power side. Auxiliary and control circuit terminals are also screw-type, accepting 2x (0.5... 1.5 mm²) solid or 2x (0.75... 2.5 mm²) solid — keep the strip length clean to avoid stray strands under the clamp. Dimensions are 55 mm wide by 140 mm tall by 149 mm deep — the 149 mm depth means it projects nearly 15 cm from the DIN rail, so check gland plate clearance if the enclosure is shallow.

RoHS compliance date is July 1, 2006 — the part meets the original RoHS directive, and the substance prohibition date is on record for compliance documentation.

Ratings and Environment

Shock resistance rated at 25 g for 11 ms — survives most panel vibration and transport bumps without nuisance tripping. Auxiliary switch is transverse design and the product extension supports an auxiliary switch — the transverse orientation means the switch block mounts alongside the breaker body, not stacked on top. Maximum operating frequency in AC-3 duty is 15 operations per hour — fine for manual or infrequent motor starts, not for high-cycle jogging applications.

Frequently asked questions

Does 3RV1031-4FB15-ZW97 detect phase failure?

Yes, phase failure detection is built in — it trips on a lost phase to prevent single-phasing motor damage.

What is the trip class of this circuit breaker?

CLASS 20, allowing up to 20 seconds of overload before tripping, matched to standard motor starting profiles.

MPN
3RV1031-4FB15-ZW97