A circuit interrupting device comprising: a housing; a line terminal disposed on the housing, said line terminal adapted to be connected to a power source circuit to provide electrical power; a load terminal disposed on the housing, said load terminal adapted to be connected to a load circuit; an interrupter disposed within the housing and electrically coupled between said line terminal and said load terminal, said interrupter having an open and a closed condition, wherein said interrupter electrically connects said line terminal to said load terminal in the closed condition and electrically disconnects said line terminal from said load terminal in the open condition; a controller comprising: a fault detector configured to detect a fault in an electrical signal in said load circuit, wherein when a fault is detected on the load circuit, said fault detector causes actuation of said interrupter to the open condition; and characterised in that said controller is adapted to receive a remote off command via a network with which the circuit interrupting device communicates, and in response to said remote off command, to generate a simulated fault in the load circuit, such that said fault detector causes actuation of said interrupter to the open condition, whereby one and the same interrupter is employed for both fault tripping and remote off command; a test device electrically connected to said fault detector and said interrupter, wherein when said test device is activated, said test device generating a test signal that is adapted to simulate a fault thereby causing the interrupter to be placed in the open condition. a housing; a line terminal disposed on the housing, said line terminal adapted to be connected to a power source circuit to provide electrical power; a load terminal disposed on the housing, said load terminal adapted to be connected to a load circuit; an interrupter disposed within the housing and electrically coupled between said line terminal and said load terminal, said interrupter having an open and a closed condition, wherein said interrupter electrically connects said line terminal to said load terminal in the closed condition and electrically disconnects said line terminal from said load terminal in the open condition; a controller comprising: a fault detector configured to detect a fault in an electrical signal in said load circuit, wherein when a fault is detected on the load circuit, said fault detector causes actuation of said interrupter to the open condition; and characterised in that said controller is adapted to receive a remote off command via a network with which the circuit interrupting device communicates, and in response to said remote off command, to generate a simulated fault in the load circuit, such that said fault detector causes actuation of said interrupter to the open condition, whereby one and the same interrupter is employed for both fault tripping and remote off command; a test device electrically connected to said fault detector and said interrupter, wherein when said test device is activated, said test device generating a test signal that is adapted to simulate a fault thereby causing the interrupter to be placed in the open condition. a fault detector configured to detect a fault in an electrical signal in said load circuit, wherein when a fault is detected on the load circuit, said fault detector causes actuation of said interrupter to the open condition; and characterised in that said controller is adapted to receive a remote off command via a network with which the circuit interrupting device communicates, and in response to said remote off command, to generate a simulated fault in the load circuit, such that said fault detector causes actuation of said interrupter to the open condition, whereby one and the same interrupter is employed for both fault tripping and remote off command; a test device electrically connected to said fault detector and said interrupter, wherein when said test device is activated, said test device generating a test signal that is adapted to simulate a fault thereby causing the interrupter to be placed in the open condition.