1SDA066606R1

ABB 1SDA066606R1 is a KLC Ronis key-locking accessory designed for ABB SACE Tmax XT3 molded-case circuit breakers (MCCBs). The device provides a controlled mechanical locking function that keeps the circuit breaker in the open (OFF) position, helping prevent unintended closing during maintenance, servicing, or electrical isolation procedures. The accessory uses Ronis Type A keys with the same key configuration, meaning compatible locks can be operated using the same Type A key.