The Siemens SIRIUS 3RV2902-2DP0 is a shunt release designed specifically for the 3RV2 series of motor circuit breakers. It provides remote tripping capability on demand, pulling the breaker open when its control coil is energized. The control supply voltage is 210-240 V AC at 50/60 Hz, with a dual ON-period rating: 100% duty at 210-240 V AC, and a short 5-second pulse rating at 190-330 V AC for applications needing a higher pick-up voltage. The release connects via spring-loaded terminals, saving panel wiring time versus screw clamps.
This shunt release snaps onto the side of a 3RV2 motor circuit breaker frame (sizes S00, S0, S2, S3). It occupies no additional DIN-rail width — the 19 mm width and 68 mm depth keep it within the breaker's own footprint. Snap-on mounting means no tools for installation; the release clips into the designated slot on the breaker side face. The operating temperature range is -20 to +60 °C, storage -50 to +80 °C, and the device is rated for pollution degree 3 (conductive pollution typical in control panels).