Founded in 1972, Polycast is a leader in the manufacture, research, and development of epoxy cast electrical insulating, transformer and switchgear components. Our strength lies within our people, innovation, commitment to quality and customer service. With our knowledge and experience as a foundation, we have evolved into the leading source of technically demanding quality castings that are in service around the world.

Switch & Bus Insulators

Standard and custom indoor and outdoor insulator styles in various voltage classes

Transformer & Switchgear Bushings

Transformer & Switchgear Bushings

Indoor and outdoor bushings in various styles and voltage classes with current ratings up to 5000 A

Current Transformers


A wide array of indoor and outdoor low and medium voltage current transformers for control, metering and relaying applications

Custom & Retrofit

Custom &

Hundreds of custom and standard insulating and bushing product designs tailored to your specifications