Recalled Fire-Hazard Panels: Federal Pacific (FPE) Stab-Lok and Zinsco

Not every old electrical panel is unsafe, but a few specific brands earned a reputation for failing in ways that put homes at risk. Two names come up again and again among electricians: Federal Pacific Electric (FPE) with its Stab-Lok breakers, and Zinsco. Millions of these panels were installed across American homes from the 1950s through the 1980s, and a great many are still in service today, often in houses that have changed hands several times without anyone flagging the problem.

Federal Pacific (FPE) Stab-Lok Panels

FPE Stab-Lok panels were widely installed for decades before independent testing raised serious concerns. The core issue is chilling in its simplicity: the breakers can fail to trip when a circuit overloads or shorts out. A breaker that does not trip lets current keep flowing through a wire that is already too hot, and that heat has nowhere to go but into the surrounding structure.

Investigations and testing found unusually high failure rates in these breakers. Some would not shut off under fault conditions at all, and others were found to have been improperly labeled for the amperage they claimed to handle. Because the failure is invisible from the outside, a Stab-Lok panel can look completely ordinary while offering far less protection than a homeowner assumes.

Zinsco Panels

Zinsco panels carry a different but equally troubling flaw. Their breakers can melt or fuse to the main bus bar, the metal strip that distributes power inside the panel. When that happens, the breaker may appear to be switched off while still delivering electricity, and it can lose the ability to trip during a surge or overload. Corrosion and aluminum components in these panels tend to make the problem worse over time.

Why Replacement Is the Right Call

With most electrical problems, repair is a reasonable option. With these panels, the danger is built into the product itself, so swapping individual breakers does not fix the underlying defect. The widely accepted recommendation among electricians is full replacement with a modern panel that trips reliably every time it should. Many home inspectors specifically call these panels out during a sale, and some insurers hesitate to cover homes that still have them.

How to Tell What You Have

Open the panel door and look for a brand name. Federal Pacific often shows an FPE or Stab-Lok label, sometimes with red breaker strips. Zinsco panels may read Zinsco, GTE-Sylvania, or Sylvania-Zinsco. If you are not sure, do not start pulling the panel apart yourself.

Have Yours Checked

Abraham is a licensed, insured, and bonded Master Electrician who can identify your panel, confirm whether it is one of these known hazards, and replace it cleanly and safely if it is. It is honest work with upfront pricing and no scare tactics. If you suspect an FPE or Zinsco panel in your home, call (703) 371-4856 to schedule an inspection.