The Siemens SIRIUS 3RV1986-0BA0 is a lever-type rotary operating mechanism with an integrated lock and door interlock, designed specifically for 3RV1 circuit breaker sizes. It mounts directly to the breaker or the panel door, giving you a single-point rotary handle that engages the breaker's switching mechanism while the interlock prevents opening the door with the breaker in the ON position — a standard safety practice for panel access.
This mechanism is sized for the 3RV1 family of motor-protective circuit breakers. The lever-type rotary handle with lock accepts a standard padlock for lockout/tagout (LOTO) compliance, and the door interlock ensures the panel door stays shut when the breaker is closed. Mounting is straightforward: the mechanism clips onto the breaker's front face or the door cutout, and the rotary shaft couples to the breaker's operating spindle. No wiring — it's purely mechanical.