Our Most Common Electrical Callout: Safety Switch Problems Aug 20, 2015Click your safety switch all the way off (for newer safety switches). Turn your safety switch back on and see if it stays on. If it clicks off and there is no appliance plugged in, call an electrical contractor. If you hear a pop or see a flash when you try to reset your safety switch – STOP and urgently call a licenced electrical contractor. Fuse and Safety Switches | Schneider Electric Single & double breaking fuse-switches equipped with intelligent electronic monitoring. Fu Pact is a complete range of double & single breaking fuse devices from 32 to 1250 A with advanced electronic monitors for automatic short-circuit and overload fault detection.