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Replacement FPE Stab-Lok® circuit breakers are unlikely to reduce the failure risk of this equipment. We recommend that residential FPE Stab-Lok® electrical panels be replaced entirely or the entire panel bus assembly be replaced, regardless of FPE model number or FPE year of manufacture. We do not sell circuit breakers nor any other products.
This web page explains the issues and recommends solutions for people looking for a replacement FPE Stab-Lok® circuit breaker. We do not sell circuit breakers nor any other products.
Reliance Electric Company Press Release Letter on FPE FPE Defects
From Reliance Electric Company
Date-Stamped July 7, 1980 Division of Product
Def....Compliance and Enforcement, CPSC [United States Consumer Product Safety Commission]
For more information contact:
Ricard B. Ainsworth, Jr.
For release: Saturday, July 5, after 4 p.m.
Cleveland, Ohio -- Reliance Electric Company has notified the
Consumer Product Safety Commission (CPSC) that it is investigating
a possible defect in the past production of the Stab-Lok® line of
two-pole, 220 volt circuit breakers made by its recently acquired
subsidiary, Federal Pacific Electric Company, headquartered in
Newark, New Jersey.
It appears that Underwriters Laboratories labels for most of
FPE's circuit breakers were obtained through improper practices,
a Reliance spokesperson said. Reliance emphasized that current
production of these breakers meets the requirements of Underwriters
An in-house test by Reliance indicated the possible defect.
Reliance has retained Southwest Research Institute, an independent
testing laboratory, to conduct further tests.
Reliance has also identified similar problems with some three-
pole Stab-Lok® and molded case circuit breakers. Further testing on
these breakers is being conducted. These type circuit breakers are
used predominantly in commercial and industrial applications.
Reliance and Federal Pacific Electric will work with the CPSC
in determining whether further action is required.
Although Reliance has not determined whether a significant
hazard exists with regard to these devices, the company has
stopped its shipments of the product in question and has requested
that distributors stop further sales until tests are completed
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Aluminum Wiring Information WebsiteAluminum Electrical Wiring Hazards and Repairs: in-depth authoritative info, photos, documents including selection of proper vs. ineffective repair methods. E.g.: Ideal 65 "Twister" purple connector fails in field and lab testing with aluminum wire.
2007 FPE Stab-Lok® TECHNICAL REPORT - an updated test report of independent testing (a large 1.2MB PDF file) using a larger pool of FPE Stab-Lok® circuit breakers than the older CPSC and Wright Malta tests found significantly higher failure rates of FPE Stab-Lok® circuit breakers, including a look at critical safety failures (breaker failed to trip at 200% of rated current or jammed) which found up to 80% failure rate for FPE Stab-Lok® GFCI circuit breakers (n=4), 12% failure rate for double pole FPE Stab-Lok® circuit breakers (n=120), and a 1% failure rate for FPE Stab-Lok® single pole circuit breakers (n=345).
1982 Reliance Electric Co. SEC Quarterly Report: Note C. reports litigation between Reliance and UV Liquidating Trust and contends that "... improper and deceptive practices were employed for many years to secure UL listings for Federal Pacific's circuit protective products..."
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