In a ground fault circuit interrupter (GFCI), a pair of flexure arms having moveable contacts disposed thereon are deflected in response to the activation of a solenoid having a moveable core. The core of the solenoid causes a pair of cam actuators which are preferably coupled together by a catcher to...http://www.google.ca/patents/US4688134?utm_source=gb-gplus-sharePatent US4688134 - Ground fault circuit interrupter and electronic detection circuit
