The Siemens 3RV2902-4DP0 is a SIRIUS shunt release designed to trip a 3RV2 motor circuit breaker remotely when its control coil is energized. It accepts a 210-240 V AC control supply at 50/60 Hz, with a 100% ON period at that voltage and a 5 s ON period capability up to 330 V AC.
The 210-240 V AC control voltage (50/60 Hz) allows continuous energization at that range and a 5 s ON period up to 330 V AC. The 20 ms break time ensures fast fault clearing. The ring terminal lug connection is a specific termination — not screw-clamp or spring-cage. Verify your panel wiring matches ring terminals sized for the control circuit current (closing power at DC minimum is 13 W, so the AC draw is modest).
The shunt release mounts directly onto the 3RV2 motor circuit breaker frame (sizes S00, S0, S2, S3 —). Snap it onto the DIN rail alongside the breaker, connect the ring lugs to the control voltage source, and the release trips the breaker when the coil is energized. The 68 mm depth and 90 mm height keep it within the standard breaker envelope, so no extra panel depth is needed.