The Siemens 3RV1902-1DV0 is a SIRIUS shunt release designed to trip a motor circuit breaker remotely. It operates on 350-415 V AC at 50/60 Hz and snap-mounts onto a DIN rail, fitting breaker frames S00, S0, S2, and S3. This is the part you add when you need an undervoltage or remote-trip function on the line side of a motor protection breaker — common in conveyor, pump, and fan panels where a safety PLC or E-stop circuit needs to kill power without a manual reset.
This shunt release carries a current lifecycle stage, but the manufacturer has flagged it as a phased-out product. The official successor is the SIRIUS 3RV2902-1DV0.
The 350-415 V AC control voltage covers standard 400 V three-phase panels without a step-down transformer — the coil pulls straight from the line side. The 50/60 Hz rating means it works on either supply frequency. At 18.5 mm wide and 68 mm deep, it tucks into the same DIN footprint as the breaker it serves, so it does not eat extra rail space in a crowded enclosure. The 100% ON period means the coil can be energized continuously without overheating, which matters if the release is held in for long intervals between trips.
Panel integration
The 18.5 mm width matches the S00 frame breaker profile, so it aligns cleanly in a multi-row layout.