Stab-Lok

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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. 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 Laboratories, Inc. (UL) requirements. Commission testing confirmed that these breakers fail certain UL calibration test requirements." In 2018 it was reported that Stab-Lok breakers and panels, made by FPE and other companies, were still in use, and it was recommended that they be removed as a potential fire hazard.

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