In business since 1952, Ronk Electrical Industries is a market leader in manufacturing phase converter units, both static and rotary, as well as power factor correction capacitors and stray voltage isolators. Ronk also specializes in double-throw switches, manual transfer switches, automatic transfer switches, meter socket circuit breakers, and generator docking stations. Ronks products and parts are designed to increase efficiency, stabilize power usage, and let you walk away at night knowing that all of your systems are operating smoothly, for years to come. Ronk can ship to every part of the contiguous United States, as well as parts of Canada and Puerto Rico. All design and manufacturing of Ronk's products happen in Nokomis, Illinois, U.S.A.