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Johnson Electric Coil Company provides complete design, engineering, and manufacturing services to supply our customers with the finest, most efficient and cost-effective single phase and three phase autotransformers. Our autotransformer design and manufacturing capabilities are some of the broadest in the industry. We can fully support our customer’s safety agency requirements with expertise in both domestic and foreign agency requirements. In addition to our specialty engineering and manufacturing services, we work with our customers to customize scheduling, packaging, shipping, billing, and communication practices to meet their unique inventory management, product handling, delivery, and customer service needs. Our goal is to provide a level of quality and service that enables our customers to be leaders in their markets. While we mainly sell in the US, our single phase and three phase autotransformers are found all over the world as components in OEM equipment. We pride ourselves on being the only transformer company our customers need.

Single and Three Phase Autotransformers

Single Phase AutotransformerWe supply single and 3 phase transformers to a number of different industries, delivering the high-quality, durable components they need, for a wide range of applications. Our engineers are adept at working to different specifications. In addition to the “off-the-shelf” selection of single and three phase autotransformer options other companies offer, we can customize transformers to meet your specific requirements. Our team is experienced at working on specialist projects, providing innovative, cost-effective transformers that exactly meet your needs.

Single Phase Transformers and 3 Phase Transformers for Sale

Three Phase AutotransformerBeing a specialty autotransformer manufacturer, we can move your design requirements forward by creating a prototype, testing that it works, and then producing electrical single phase transformers or three phase transformers that are exactly what you need—to your schedule, on time, in shipments that work for you. To find out more about our single phase autotransformers, three phase autotransformers, or other products, call us at (800) 826-9741.


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Outstanding Customer Service”