Patent ID: 8233251

Claim:
A circuit interrupting device having a pair of power input terminals, a pair of power output terminals, and a pair of user accessible output terminals, which are electrically separated from each other in a tripped state and electrically connected in a reset state; said circuit interrupting device further comprising: a reset button; a test button; a flexible metal piece located underneath said test button; and a test resistor located below said flexible metal piece; wherein when said circuit interrupting device is properly wired and at said tripped state, depressing said reset button drives said test button to move downwards with said reset button so that said flexible metal piece beneath said test button comes into contact with said test resistor to generate a simulated leakage current to test whether components of said circuit interrupting device are working properly; wherein when said components of said circuit interrupting device are working properly, said circuit interrupting device is capable of being reset; and wherein when at least one of said components of said circuit interrupting device is not working properly, said circuit interrupting device cannot be reset.