Waukesha Electric Systems is one of the largest manufacturers of power transformers in the United States. It is a valued supplier of high-power transformers. The company offers a variety of circuit breaker services, reverse-engineered components and replacement parts. It has manufacturing operations in the states of North Carolina. Additionally, the company has a wholly owned subsidiary, PSD, which provides high-voltage substations and transmission line projects ranging from engineering to procurement and construction management. The company serves various markets, including public power, investor-owned utilities, independent power producers, wind farms, and industrial and commercial firms. Waukesha Electric Systems is a unit of SPX Corporation, which is a global provider of technical products and systems and flow and cooling technologies.