Founded in 1940, Normandy Machine Co. Inc. is ISO 9001:2008 certified and is a supplier to the electric power transmission and distribution industry. The company serves most transformer manufacturers, nearly all electric utilities and scores of industrial plants in the United States. Based in Troy, Missouri, it repairs and custom-manufactures component parts for power transformers, as well as circuit breakers, including low/high voltage bushings, contacts, tap changers and switch gear. The company makes and models Load Tap Changers (LTC's) and Oil Circuit Breakers (OCBs) along with various other parts.