Patent ID: 8241074

Claim:
A circuit breaker, comprising: a circuit breaker housing including a base portion and a cover portion, wherein the base portion and the cover portion form a compartment; a lug assembly retained in the compartment of the circuit breaker housing, the lug assembly including a lug body forming a wire receiver, the lug body having a threaded screw hole in communication with the wire receiver, and a lug screw having a driving end and a threaded shaft inserted in the threaded screw hole; a back-out stop formed by the base portion and the cover portion of the circuit breaker housing, the back-out stop positioned to contact the driving end so as to limit an extent of retraction of the lug screw out of the threaded screw hole; and an advancement stop of the circuit breaker housing adapted to limit advancement of an engagement end of the lug screw in the wire receiver.