The Siemens 3RV2902-1DP0 is a SIRIUS shunt release designed for remote tripping of 3RV2 motor circuit breakers. The part snaps onto the breaker's side, so no extra DIN-rail space is needed — it integrates directly into the existing panel layout.
The description notes a 100% ON period at that range, and a 5 s ON period for 190-330 V AC — meaning the coil can be held continuously at nominal voltage, but if you apply the extended range (190-330 V) it's rated for short-duration pulses only, not continuous energization. That matters if you're wiring it into a safety circuit that holds the shunt energized until a fault clears. The 20 ms break time is fast enough for most emergency-stop and overcurrent schemes — the breaker opens before the fault current can damage downstream contacts. Mechanically, the shunt release snaps onto 3RV2 breakers in frame sizes S00, S0, S2, and S3. Dimensions are 68 mm deep, 19 mm wide, 90 mm tall — the 19 mm width means it adds one modular unit to the breaker's footprint, something to account for in a dense panel layout.