New in package Whole house surge protector. The Square D HEPD Whole Home Electronics Protective Device is a reliable AC surge protection system with a rating of 80kA. Made by the trusted brand Square D in the United States, this device is designed to safeguard your home electronics from power surges, ensuring peace of mind for you and your belongings. With dimensions of 6.40 inches in length, 3.90 inches in width, and 3.20 inches in depth, this protective device is a crucial component to enhance the safety of your electrical systems.