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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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Other Information

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

For more information about this item, contact:

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

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LC Subject Headings

Central Maine Power Company
Electrical apparatus

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