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Custom Composites Manufacturer Your one stop shop for full composite service

Electrical - Sheet

Protectolite™ manufactures solid and thin homogenous, one-piece molding of thick sheet laminates that offer great insulation properties, providing superior protection even at high temperatures. Protectolite™ electrical insulation sheets are approved and used by all the major electrical companies in North America. Our ability to mold thick electrical insulation sheets over 2" and up to 6" in one homogeneous laminate process, is unique in the composite sheets industry! Our fiberglass reinforced polyester laminates are manufactured in matched metal molds, using high pressure and heat. Our electrical insulation sheet series grades display excellent fire and track resistance, as well as providing superior punching and machining characteristics. We are proud to manufacture composite sheets that meet and/or exceed NEMA standards. Many of our composite sheet grades are also UL listed.


  • Electrical Power Generation
  • Electrical Power Distribution
  • Mining & Smelting
  • Railway and Mass Transit
  • Pulp and Paper

End products:

  • Spacers & Rings
  • Bushings
  • Insulators
  • Bus Supports
  • Arc Chutes
  • Cable Supports
  • Cable blocks
  • Terminal Blocks
  • Switch Gear Components
  • Transformer Components
  • Motor Mounts & Shims