COMPACT CIRCUIT BREAKER

摘要

2104007 9313537 PCTABS00024 A compact circuit breaker (10) in an enclosure (24) surrounding at least one stationary contact (38) and movable contact (40). A rotary operator (104) including rotary members (106) and a contact lever train (82) selectively causes the stationary contact (38) and the movable contact (40) to assume either a closed or an open state. A single solenoid (44) for sensing breaker current in each phase causes the rotary operator (104) to move the contacts (40) from a closed state to an open state. Additionally, the solenoid (44) for a faulted phase directly acts on a solenoid bell crank (84) to cause the contact (40) to begin to assume an open state in a trip operation, if breaker current reaches a preselected trip value in the faulted phase. The rotary operator (104) causes all contacts to move from a closed to an open position by initiating a trip operation in the contact lever trains (82).