Leviton® surge protective devices (SPDs) are designed to reduce the random energy surges of voltage transients and electrical noise ON the power supply line. Our comprehensive line of SPDs range from type 1 surge arrestors - the first line of defense against external surges - to type 2 surge panels and type 3 point-of-use devices, such as strips and receptacles. We also offer a variety of type 4 UL recognized surge protective components and low voltage power and data surge protective devices used for wired in protection of industrial factory automation equipment. For optimum protection, Leviton® recommends implementing a "surge protection network". For details click ON the contact form link to the right and one of our surge protection network experts can advise you ON the options that are best for your application.