A circuit interrupter handle mechanism is disposed on the face of a molded case circuit breaker. The handle mechanism has a rotary handle, which may be rotated through approximately 90.degree. of rotation from a disposition of circuit interrupter conduction to a disposition of circuit interrupter non-conduction....http://www.google.ca/patents/US6194983?utm_source=gb-gplus-sharePatent US6194983 - Molded case circuit breaker with current flow indicating handle mechanism
