Protective circuits and devices for the prevention of fires

摘要: Protective circuits for preventing fires due to arc short (as opposed dead circuits), are described. Current flow in excess of that existing during normal transient overloads is indicative an circuit. Protection provided by triacs which triggered circuit current overloads. When triggered, the triacs, series with fuse or breaker, placed directly across power source and thus actuated substantially instantaneously interrupt load By interrupting hazard a fire obviated. Means also giving visual indicium protective has been triggering triacs. Additional means response overheated main electrical service connection. Also disclosed novel breaker cartridge, adapter insertion receptacle, receptacle connecting plug, each comprising triac sensing impedance, function actuate achieve same protection against fires.