Molded case circuit breaker actuator-accessory unit reset mechanism

A molded case circuit breaker having a combined trip actuator and accessory unit comprising:

• a molded case circuit breaker case and cover;
• a circuit breaker operating mechanism within said case arranged for separating a pair of contacts to interrupt circuit current through said contacts;
• a crossbar assembly connected with said operating mechanism, and one of said contacts, said crossbar assembly interfacing with an operating handle yoke for manual opening and closing of said contacts;
• a trip actuator-accessory unit within a recess in said circuit breaker cover proximate said operating mechanism and including a trip actuator latch pivotally attached to a support housing for articulating said operating mechanism to separate said contacts automatically upon overcurrent conditions through said contacts;
• an operating lever in said case proximate said operating mechanism and interfacing with said actuator-accessory unit through a latch support arm, said latch support arm including a latch pin being retained by said trip actuator latch in the absence of said overcurrent conditions through said contacts, said latch pin being released by said trip actuator latch upon occurrence of said overcurrent conditions;
• an electromagnetic coil and a spring-biased plunger within said actuator-accessory unit, said plunger being restrained from moving said trip actuator latch away from said latch pin;
• and
• a drive lever attached to said operating handle yoke by means of a pivot pin and interacting with said operating lever to rotate said operating lever and said latch support arm to engage said latch pin with said trip actuator latch.