Ark-Gard ENR-GFCI kits from Eaton's Crouse-Hinds Division are used to interrupt a circuit when ground fault is detected on equipment which may be handled by personnel in hazardous locations. Also used with portable electrical equipment, such as tools, lighting systems, compressors and similar devices for personnel protection. Used in branch circuits of 15 to 20 amperes at 125 volts AC.