Square D Brand Home Electronics Protective Devices (HEPDs) are compact and affordable surge suppressors designed for residential load centers. HEPDs work together with surge protection plug strips to provide surge suppression for sensitive electronics. HEPDs reduce surges that might otherwise overwhelm plug strips and damage connected household equipment. HEPDs also provide surge suppression for important items such as washers, dryers, refrigerators, stoves and air conditioning that plug strips may not or cannot protect.