Profile: MAC has designed and built a wide variety of high quality products for the electric utility, construction, electrified transit, and OEM industries. We are ISO 9000-2000 certified. Our product line includes pressurizing and circulating plants, third rail power switches, control products, switchgear, bus assemblies, gas & oil filled cable splicing kits, prefabricated cable assemblies, high voltage cable splice kits and splice components.