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Stab-Lok is a brand name of electrical circuit breakers that were manufactured primarily by Federal Pacific Electric from 1950 to 1980. [ 1 ] [ 2 ] In June 1980, Reliance Electric, which had purchased FPE, reported to the United States Consumer Product Safety Commission that "many FPE circuit breakers did not fully comply with Underwriters ...
The company, in its earliest form as Federal Electric, a lighted sign company, was founded in 1901. It later made home and kitchen appliances, neon signs, police sirens, and circuit-breakers. Everything but circuit-breakers had been spun off or sold off to other companies by the 1940s, and the name was changed to Federal Pacific Electric.
Its "electrical" distinction permitted the property to be used for commercial electrical service. There are no other permits associated with the property, according to the Building Department.
In 1963, Zinsco introduced the R-38 twin breaker, which was the only twin circuit breaker that also made contact on both bus-bars for 240 volts in a single breaker space. This made the Zinsco brand hugely popular with contractors and millions of Zinsco service panels and load centers were installed through the 60s and 70s.
By 1929, Square D merged with a Milwaukee-based industrial controller company and began producing Westinghouse-licensed circuit breakers. In 1935 Square D began producing its own range of circuit breakers for both commercial and residential uses. [3] In 1991, the company was acquired and became a subsidiary of Schneider Electric. [4]
The Wadsworth Electric Manufacturing Company was formed by George B. and Harry Wadsworth in 1904. George received his first patent for an electrical service entrance safety switch in 1907. This device reduced the likelihood of accident or fire and enabled homeowners to replace their own fuses. He received an additional 15 patents in the field ...