For over 125 years, ILSCO has built a solid reputation as an industry leader in the manufacturing of power and grounding connectors and accessories. ILSCO solutions are everywhere you look. We service the following markets: Construction & Industrial (C&I), Utility, OEM, Communications, Maintenance, Repair & Overhaul (MRO), and Residential, as well as Renewable Energy. Since inception, our entrepreneurial spirit has been a guiding force, empowering the company to bring product innovation and exceptional customer service to the marketplace. ILSCO is part of ECM Industries, which is headquartered in New Berlin, Wisconsin. ECM is a global manufacturer and supplier of electrical products for construction, maintenance, lighting, irrigation, landscape supply, and gas utility markets. The ECM Industries portfolio consists of leading brands Gardner Bender, Sperry Instruments, Bergen Industries and King Innovation. These brands have been supplying electricians, do-it-yourselfers, contractors, and maintenance technicians with a wide variety of innovative products for over 50 years. The ECM brands are widely stocked and distributed through leading wholesalers, retailers, catalogs and e-commerce distributors. More than a connector company, ILSCO is a connections company. Connections Matter.