Born 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.
UL Listed
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UL Recognized
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C-UL Certified
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CSA Certified
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CSA Component Certified
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EN 61558-1
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EN 61558-2-6
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EN 60335-1
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ISO 9001:2000
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HUBZone
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UL Class 180 (H) Insulation System
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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
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
Mitchell Electronics CorporationSince George Horwitz founded it in 1956, Mitchell Electronics Corporation has remained a family-owned, family-operated manufacturer of custom transformers, building prototypes and production runs to customer specifications. Now in its third generation, the Mount Vernon company works with a 35-person design and production staff and makes its products in the USA. Mitchell has held ISO 9001:2015 certification since 1998 and is known for handling both one-off designs and large-volume orders without minimum quantities.ATHENS, OH
ELSCO TransformersFounded 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.CINCINNATI, OH