Abstract: A locking assembly is for the trip bar of a circuit breaker. A pivotal trip lever is coupled to the trip bar, in order to move therewith. The locking assembly includes: a locking mechanism, such as a commercially available key lock, with a pivotal element; a mounting plate, which receives the key lock and secures it to the circuit breaker; an extension member coupled to the pivotal element; and a flexible linkage interconnecting the pivotal trip lever and the extension member. The key lock has locked and unlocked positions corresponding to the trip bar of the circuit breaker being locked and unlocked, respectively. The flexible linkage is interchangeable or universally employable with a variety of commercially available locks, in order to lock the trip component of a wide variety of electrical switching apparatus.