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Zinsco would remain with copper in both their panels and breakers until the third major copper shortage in the early 1960s, when they would switch to an aluminum bus. 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.
Al's Auto Supply – Chain that operated in Washington, California, Idaho, Oregon, Nevada and Alaska; purchased by CSK Auto.Founded by Abe "Al" Wexler in Everett, Washington in the late 1950s; [1] [2] sold 15 store chain to Paccar in 1987; [3] Paccar sold chain (along with Grand Auto) in 1999 to CSK Auto which eventually rebranded stores as Schucks.
Interior of a Federal Pacific Electric Stab-Lok circuit breaker panel. Stab-Lok is a brand name of electrical circuit breakers that were manufactured primarily by Federal Pacific Electric from 1950 to 1980.
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.
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]
That year, the company announced the construction of a new building on 11th Street, Covington, Kentucky. The building was completed in March 1923. In 1925, George Wadsworth sold his rights to 16 patents to a Cincinnati company and resigned from Wadsworth Electrical Manufacturing. David Wadsworth, George's brother, was appointed vice president ...