Protect your equipment and save money - with SSI Surge Protective Devices. Our products often provide a payback of less than 6 months. Whether protecting amusement parks, casinos, US Military Bases, manufacturing facilities, mining operations, retail stores, office buildings or homes, SSI offers the best value in surge protection. Call us today for a site survey of your facility to determine just how much SSI can save you, and with our 25 Year Warranty, our products keep on saving you year after year.