Historical information

White Porcelain “Made in Occupied Japan” electrical insulators. Insulators can be dated from September 1945 to April 1952 during the allied occupation of post WWII Japan. Pin insulators were manufactured specifically for Australian export. Pin insulators are made of non-conductive porcelain and were used to create a barrier between outer wrapped suspended wiring and threaded wood or metal dowel. Pin insulators such these have been found on utility poles around Australia.


Porcelain insulators stamped with “Made in Occupied Japan” are often viewed with much interest by collectors given their connection to WWII and short seven year manufacturing time span. Pin insulators such as these are an example of Australia’s continued electronic development which began in the late 19th century.

Physical description

Collection of seven white porcelain insulators made in Occupied Japan. Insulators are cylindrical in shape, with indentation at top. The indentation creates a flat mushroom top head. Insulators display a manufacturer stamp at the bottom of the cylinder. Insulators are single walled and hollow inside with threading at the enclosed top end.