Patent ID: 7202437

Claim:
A circuit breaker comprising: a housing including a first insulating portion; a line end; a load end; a pair of separable contacts electrically disposed between said line end and said load end, said separable contacts including an open position and a closed position; an operating mechanism including a second insulating portion and a movable arm carrying one of said separable contacts, said operating mechanism structured to move said separable contacts between the open position and the closed position; and a conductor electrically interconnected between said movable arm and one of said line and load ends, wherein said first insulating portion is disposed between said separable contacts and a portion of said conductor, wherein said first insulating portion and said second insulating portion cooperate at or about the closed position of said separable contacts to prevent an arc from passing from said separable contacts to said conductor; and wherein said first insulating portion includes a first contour; wherein said second insulating portion includes a second contour; and wherein said first contour substantially mates with said second contour in the closed position of said separable contacts.