KA2803B onsemi, Comparator, 8-Pin PDIP

Ground-Fault Circuit Interrupter is a low-power controller for AC-receptacle, that detect hazardous current paths to ground and ground to neutral faults. The circuit interrupter then disconnects the load from the mains power line before a harmful or lethal shock occurs.

Ground Fault Interrupter
Earth Leakage Detector
Require less adjusting and calibrating

Ground Fault Interrupt (GFI) Controllers, Fairchild Semiconductor