1SDA105091R1

ABB 1SDA105091R1 is an RHL Ronis key-locking device for the rotary-handle operating mechanism of ABB SACE Tmax XT7 MCCBs. It is designed to lock the rotary handle in the open (OFF) position using several/different Ronis 1228 keys, helping prevent accidental or unauthorized operation of the circuit breaker. ABB specifies it as “KEY LOCK RONIS SEVERAL 1228 IN OPEN FOR ROTARY HANDLE OPERATING MECH. XT7.”