Door interlock assembly and draw-out circuit breaker assembly employing the same

A door interlock assembly for an enclosure housing electrical switching apparatus, said enclosure including a frame having first and second sides for supporting said electrical switching apparatus and a door for controlling access to said electrical switching apparatus housed therein, said electrical switching apparatus including a pair of separable contacts and an operating mechanism for opening and closing said separable contacts, said operating mechanism including a poleshaft operable between first and second positions corresponding to said separable contacts being closed and opened, respectively, and a trip lever adapted to open said separable contacts when actuated, said door interlock assembly comprising:

• a pivot member structured to be coupled to said poleshaft in order to move therewith, said pivot member including a first end and a second end;
• a mounting bracket structured to be coupled to one of said first and second sides of said frame, said mounting bracket having an opening receiving a portion of said pivot member therethrough;
• a door latch structured to be pivotally coupled to said one of said first and second sides of said frame, said door latch including first and second ends, the first end of said door latch being adapted to engage and lock the door of said enclosure;
• a linkage interconnecting said pivot member and said door latch;
• and
• means for tripping open said separable contacts when said door is open.

A draw-out circuit breaker assembly comprising:

• a draw-out circuit breaker including a pair of separable contacts and an operating mechanism for opening and closing said separable contacts, said operating mechanism including a poleshaft, operable between first and second positions corresponding to said separable contacts being open and closed, respectively;
• an enclosure housing said draw-out circuit breaker, said enclosure including a door for controlling access to said draw-out circuit breaker housed therein, a frame having first and second sides for supporting said circuit breaker and a draw-out mechanism coupled to said frame in order to permit said circuit breaker to be drawn into and out of said enclosure;
• and
• a door interlock assembly comprising:
• a pivot member coupled to said poleshaft in order to move therewith, said pivot member including a first end and a second end,
• a mounting bracket coupled to one of said first and second sides of said frame, said mounting bracket having an opening receiving a portion of said pivot member therethrough,
• a door latch pivotally coupled to said one of said first and second sides of said frame, said door latch including first and second ends, the first end of said door latch being adapted to engage and lock the door of said enclosure, and
• a linkage interconnecting said pivot member and said door latch.