A circuit interrupting assembly for an electrical power distribution system, comprising: a first insulator adapted for connection to the power distribution system, said insulator has a first conductive bracket; and a circuit interrupting device coupled to said first conductive bracket of said insulator, said circuit interrupting device characterized in that said circuit interrupting device includes, a circuit interrupter including a dielectric housing with a primary contact and a movable contact enclosed therein, said movable contact being movable relative to said primary contact between a closed position allowing current to pass through said circuit interrupter and an open position separating said contacts (32, 34) and preventing current from passing through said circuit interrupter, an actuator coupled to and disposed adjacent to said circuit interrupter, said actuator being received in a housing and including a shaft coupled to said movable contact of said circuit interrupter for substantially simultaneous movement, a continuous electrically conductive path being provided between the shaft and the movable contact without insulation being disposed between them, said shaft moves said circuit interrupter between said closed and open positions upon occurrence of a fault current, first and second terminals (41, 118) electrically connected to said circuit interrupter contacts (32, 34), and at least one of said first and second terminals (41, 118) being connected to said first conductive bracket, and a current path is defined between said first terminal, said circuit interrupter and said second terminal, allowing current of the power distribution system to pass through said current path so that the potential of said circuit interrupter is the same as the potential of the power distribution system, said circuit interrupter and said actuator are maintained at the same potential as the power distribution system and said first terminal, said circuit interrupter, said actuator, and said second terminal are electrically isolated from earth ground. a first insulator adapted for connection to the power distribution system, said insulator has a first conductive bracket; and a circuit interrupting device coupled to said first conductive bracket of said insulator, said circuit interrupting device characterized in that said circuit interrupting device includes, a circuit interrupter including a dielectric housing with a primary contact and a movable contact enclosed therein, said movable contact being movable relative to said primary contact between a closed position allowing current to pass through said circuit interrupter and an open position separating said contacts (32, 34) and preventing current from passing through said circuit interrupter, an actuator coupled to and disposed adjacent to said circuit interrupter, said actuator being received in a housing and including a shaft coupled to said movable contact of said circuit interrupter for substantially simultaneous movement, a continuous electrically conductive path being provided between the shaft and the movable contact without insulation being disposed between them, said shaft moves said circuit interrupter between said closed and open positions upon occurrence of a fault current, first and second terminals (41, 118) electrically connected to said circuit interrupter contacts (32, 34), and at least one of said first and second terminals (41, 118) being connected to said first conductive bracket, and a current path is defined between said first terminal, said circuit interrupter and said second terminal, allowing current of the power distribution system to pass through said current path so that the potential of said circuit interrupter is the same as the potential of the power distribution system, said circuit interrupter and said actuator are maintained at the same potential as the power distribution system and said first terminal, said circuit interrupter, said actuator, and said second terminal are electrically isolated from earth ground.