Circuit interrupter

Claim 1

A MULTI-POLE INTERRUPTING DEVICE COMPRISING, IN COMPRISING, IN COMBINATION, A CIRCUIT BREAKER COMPRISING A FIRST HOUSING, A MULTI-POLE CIRCUIT BREAKER MECHANISM DISPOSED GENERALLY WITHIN SAID FIRST HOUSING AND COMPRISING SEPARABLE CONTACT MEANS FOR EACH POLE, A COMMON TRIP BAR STRUCTURE COMMON TO ALL OF SAID POLE AND OPERATIVELY MOVABLE TO A TRIPPED POSITION TO EFFECT OPENING OF ALL OF SAID CONTACT MEANS, A MULTI-POLE FUSE UNIT COMPRISING A SECOND HOUSING, FUSE UNIT MEANS SUPPORTED ON SAID SECOND HOUSING AND COMPRISING A REMOVABLE FUSE FOR EACH POLE OF SAID CIRCUIT BREAKER AND A COMMON TRIPPING BAR STRUCTURE, EACH OF SAID FUSES COMPRSING MEANS OPERABLE UPON THE OCCURRENCE OF CERTAIN CURRENT CONDITIONS TO OPERATIVELY MORE SAID COMMON TRIPPING BAR STRUCTURE TO A TRIPPING POSITION, SAID COMMON TRIP BAR STRUCTURE COMPRISING A TRIP ARM, SAID COMMON TRIP BAR STRUCTURE WHEN OPERATIVELY MOVED TO THE TRIPPING POSITION ENGAGING SAID TRIP ARM TO OPERATIVELY MOVE SAID COMMON TRIP BAR STRUCTURE TO A TRIPPED POSITION TO EFFECT OPENING OF ALL OF SAID CONTACT MEANS, SAID FUSE UNIT BEING MOVABLY MOUNTED ON SAID CIRCUIT BREAKER, SAID FUSE UNIT COMPRISING SAFETY TRIP MEANS AT EACH POLE UNIT THEREOF MOUNTED ON SAID SECOND HOUSING EACH OF WHICH SAFETY TRIP MEANS MOVES AUTOMATICALLY TO MOVE SAID COMMON TRIPPING BAR STRUCTURE TO THE TRIPPING POSITION WHEN THE ASSOCIATED FUSE IS REMOVED FROM SAID FUSE UNIT.