Porcelain Insulators from the United States of America

Most of the insulators made in the United States were for domestic use and are cataloged in the U numbers below 1000. A few were made strictly for export and they are included here.   The porcelain insulators are identified by U-numbers, but in the range of 1000-3999.  The link below is for the reference book that covers these insulators.

Worldwide Porcelain Insulators (Unipart Pin Types)

Insulators from the USA

U-1654 U-1692 U-2016 U-2019 U-2053A

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