Founded in Cincinnati in 1912 as the first independent transformer repair facility in the United States, ELSCO Transformers now designs, hand-builds and stocks medium-voltage power transformers. The privately owned company remains operated by five generations of electrical engineers and electricians, with its copper-wound dry-type units built and tested under one roof. ELSCO is particularly known for quick-ship emergency replacements and retrofit transformers configured to fit existing electrical connections.
DOE Efficiency Standards
Compliance program
NEMA Standards
Compliance program
ANSI Standards
Compliance program
IEEE Standards
Compliance program
ELSCO TransformersFounded in Cincinnati in 1912 as a transformer repair company, ELSCO Transformers now designs, hand-builds and stocks medium-voltage power transformers for industrial and commercial customers. Since building its own dry-type units in 1988, the five-generation, privately owned company has paired in-house engineering and testing with a 95% in-stock availability target, often shipping replacements within 24 to 48 hours. That repair heritage also shapes ELSCO’s retrofit, custom bus-work and emergency replacement support when a failed transformer threatens operations.CINCINNATI, OH
R.E. Uptegraff Manufacturing CompanySince 1925, Scottdale’s privately owned R.E. Uptegraff Manufacturing Company has built conventional and specially engineered transformers for industrial and utility customers, from 10 to 15,000 kVA. The company remains a custom engineered-to-order shop, pairing its 42-employee operation and 70,000-square-foot Pennsylvania facility with repair and refurbishment work on transformers of any make. Its history includes pioneering aluminum-wound transformers in 1966 and three generations of Uptegraff family ownership before the business became privately owned under different structure in 2014.SCOTTDALE, PA
Norlake Manufacturing CompanyFor more than 50 years, Norlake Manufacturing Company has designed and built custom transformers and magnetics in Northern Ohio, growing from four employees to more than 100 across four Lorain County facilities. Its engineering team brings over a century of combined transformer-design experience to prototypes, production runs, and specialized medium-voltage work, including the patented Eagle 18-pulse autotransformer. Norlake has been privately owned under its current ownership for over 40 years and is ISO 9001:2015 certified.NORTH RIDGEVILLE, OH
Foster Transformer CompanyBorn from Arnot Foster’s spare-bedroom enterprise, Foster Transformer Company has been a Cincinnati manufacturer since 1937. Its Northside operation is known for custom transformer work, with in-house tooling that helps the company move quickly on new programs and lower-volume production for equipment makers. Foster also supports larger production runs through its facility in Dongguan, China.CINCINNATI, OH