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Siemens 3RV1902-1AV0 — Motor Protection Circuit Breakers (MPCB)

Siemens 3RV1902-1AV0 SIRIUS undervoltage release, 400 V AC/5

MPN3RV1902-1AV0

Siemens SIRIUS 3RV1902-1AV0 undervoltage release, 400 V AC/50 Hz, 440 V AC/60 Hz, for circuit breaker sizes S00, S0, S2, S3, snap-on mounting, IP20 finger-safe front.

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

3RV1902-1AV0 — Identification
ParameterValue
SeriesSIRIUS
Product designationundervoltage release
Frame sizeS00, S0, S2, S3
3RV1902-1AV0 — Electrical
ParameterValue
Rated insulation voltage (Ui), pollution degree 3690 V
3RV1902-1AV0 — Mechanical
ParameterValue
Height90 mm
Width18.5 mm
Depth68 mm
Mounting methodsnap-on mounting
3RV1902-1AV0 — Environmental
ParameterValue
Operating temperature-20 ... +60 °C
Storage temperature-50 ... +80 °C

Product details

The Siemens SIRIUS 3RV1902-1AV0 is an undervoltage release designed for use with motor circuit breakers in sizes S00, S0, S2, and S3. It operates at 400 V AC at 50 Hz and 440 V AC at 60 Hz, with an insulation voltage rated at 690 V and pollution degree 3.

This part is a phased-out product. The manufacturer lists the preferred successor as the SIRIUS 3RV2902-1AV0.

Integration notes

At 18.5 mm wide, it occupies a single modular slot in the panel. The front is IP20 finger-safe, so no additional cover is needed for vertical contact. The control supply voltage is AC only.

Frequently asked questions

Where can I buy 3RV1902-1AV0 and how do I get a price?

The 3RV1902-1AV0 is sourced to order against an RFQ through independent distribution. Submit a request for quote to confirm current availability and pricing.

Will 3RV1902-1AV0 drop into a panel specified around 3RT5034-1AR60 without rewiring?

No. The 3RT5034-1AR60 is a power contactor in size S2 with a 55 mm width and screw-type terminals. The 3RV1902-1AV0 is an 18.5 mm wide undervoltage release for motor circuit breakers. They serve different functions and have different footprints.

MPN
3RV1902-1AV0