Electrical insulator, ca. 1930

Contributed by Maine Historical Society

Electrical insulator, ca. 1930

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This insulator is coated with a composite material containing particles of mica, a mineral also used to insulate early toaster elements, fuses, and switches.

Electrical insulators keep electrical current from "leaking" out of wires.

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About This Item

  • Title: Electrical insulator, ca. 1930
  • Creation Date: circa 1930
  • Subject Date: circa 1930
  • Media: Ceramic, composite materials
  • Local Code: 2004.090.4430
  • Collection: Central Maine Power Company collection
  • Object Type: Physical Object

For more information about this item, contact:

Maine Historical Society
485 Congress Street, Portland, ME 04101
(207) 774-1822 x219

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