Federal Pacific Electric (FPE) Stab-Lok panels and Zinsco panels are the two most well-documented defective electrical panel brands ever sold in the United States. Millions were installed in homes from the 1950s through the 1980s — including tens of thousands across Monmouth County and Central New Jersey.
The problem is simple and serious: the circuit breakers in these panels fail to trip when they should. When a circuit overloads or a short circuit occurs, the breaker is supposed to cut the power before the wiring overheats. In Federal Pacific and Zinsco panels, the breakers frequently don’t. The result is overheating wires inside your walls — and a significantly elevated fire risk.
This isn’t speculation. It’s supported by decades of independent testing, a New Jersey court ruling finding FPE guilty of consumer fraud, and thousands of documented field failures. If your home has one of these panels, the only safe course of action is full panel replacement.
Super Power Electric has replaced hundreds of Federal Pacific and Zinsco panels across Red Bank, Middletown, Tinton Falls, Shrewsbury, Little Silver, Matawan, and communities throughout Monmouth County. NJ Electrical License #12849. Over 900 five-star reviews.
In 2002, a New Jersey court ruled in a class action lawsuit that Federal Pacific Electric had knowingly and purposefully distributed circuit breakers that were not tested to meet UL (Underwriters Laboratories) standards — despite carrying the UL label. The court found that FPE violated the New Jersey Consumer Fraud Act over many years.
Experts estimate that FPE Stab-Lok panels may be responsible for approximately 2,800 residential electrical fires per year nationwide. The fact that your panel hasn't caused a problem yet does not mean it's safe — it means the breakers haven't been called on to trip yet. The panel is a latent hazard.
Aftermarket "replacement" breakers sold to fit FPE panels are not a solution. The panel's bus bar design itself is flawed — breakers don't seat properly, connections are unreliable, and the fundamental design issues remain. Electrical safety experts universally recommend complete panel replacement, not breaker swaps.
Federal Pacific Electric was one of the largest electrical panel manufacturers in the country from the 1950s through the 1980s. Their Stab-Lok breaker design was installed in an estimated 28 million homes. The company went out of business, but the panels remain — still wired and still failing.
The core defect: FPE Stab-Lok circuit breakers fail to trip at rates far exceeding any other manufacturer. Independent testing by electrical engineer Jesse Aronstein, whose research spans over 3,000 breakers tested through 2018, found:
Open your electrical panel door and look for:
Important: Some FPE panels have had their labels removed, painted over, or replaced by previous owners. If your home was built between 1950 and 1990 and you’re not sure what panel you have, we can identify it on-site during a free evaluation. Do not attempt to remove breakers or open the internal panel yourself — FPE panels are known to have breakers that appear off but remain energized internally.
Independent testing shows Zinsco breakers fail to trip approximately 25% of the time — far higher than the fraction-of-one-percent failure rate for breakers from reputable manufacturers.
Unlike some electrical problems that give obvious warning signs, Zinsco panel failures are often invisible from the outside. The breakers may appear normal. The panel may appear to function properly. But inside, breakers may have already begun melting to the bus bar — a condition that can only be discovered by a licensed electrician who removes the panel cover and physically inspects each breaker.
Zinsco panels were manufactured from the 1940s through the mid-1970s, when production ceased. The company was later acquired by GTE Sylvania, so these panels may also be labeled “Zinsco-Sylvania” or “GTE-Sylvania-Zinsco.” They were widely installed in homes across the country, including throughout New Jersey.
The core defect: Zinsco breakers use an aluminum clip to connect to the panel’s bus bar. Over time — especially as electrical loads have increased beyond what these panels were designed for — these clips overheat, expand, and lose contact with the bus bar. When that happens:
Look for:
If you see any of these identifiers, contact a licensed electrician for evaluation. Do not attempt to remove breakers — if a breaker has melted to the bus bar, forcing it can cause arcing, electrical shock, or fire.
We’ve performed thousands of Federal Pacific / Zinsco panel upgrades since 1996 in Red Bank, Rumson, Oceanport, Tinton Falls and all of Monmouth County / Central Jersey. We have over 900 five-star reviews and counting but don’t just take it from us — hear it from our customers.
We understand that replacing an electrical panel is an expense no one plans for. But for Federal Pacific and Zinsco panels, there is no safe middle ground:
For FPE panels, the bus bar design itself is defective — new breakers in the same panel face the same connection and seating problems. For Zinsco panels, the aluminum-to-bus-bar connection degrades regardless of how new the breaker is. Electrical safety experts explicitly warn against installing replacement breakers in either panel type.
Both FPE and Zinsco panels are latent hazards. They function normally until the moment an overcurrent occurs and the breaker is called on to trip. If that moment hasn't come yet, you've been fortunate — but the hazard remains.
Insurers in New Jersey are increasingly requesting electrical panel inspections for older homes. Federal Pacific and Zinsco panels are specifically flagged — some carriers are declining to renew policies or are increasing premiums until the panel is replaced. Replacing your panel can protect your coverage and may reduce your premium.
When we replace a defective panel, we don’t just swap the box — we bring your home’s electrical service up to current code:
Most replacements are completed in a single day. Your power is typically off for 4–6 hours during the panel swap.
The cost depends on whether you’re doing a straight panel swap or a full service upgrade.
Every replacement includes our FREE whole-house surge protection ($1,200 value) and our 100% money-back guarantee.
We provide a firm, written quote after inspecting your panel. No hourly billing. No surprise charges. Financing options available.
$1,800–$3,000
If your existing service entrance is in good condition and adequate for your needs, we can replace the panel without upgrading the service. This is the most economical option.
$2,500–$4,500
The most common scope. Includes new 200-amp panel, new service entrance cable, new meter base, weatherhead, grounding, and all new breakers. This is what most homes with FPE or Zinsco panels need.
$4,000–$6,000+
For homes that also need subpanels, significant rewiring, or service entrance relocation.
If your home has a Federal Pacific or Zinsco panel, every day it remains in service is a day your home’s primary electrical safety system can’t be trusted. We’ve replaced hundreds of these panels across Monmouth County. We know what to look for, we know what it takes, and we handle the entire process — from evaluation to final inspection.
Open your panel door and look for the manufacturer's name on the label, door, or breakers. FPE panels typically have "Federal Pacific Electric" and "Stab-Lok" printed inside, with red-tipped breaker handles. Zinsco panels have color-coded breaker handles (red, blue, green) and may say "Zinsco," "Sylvania," or "GTE-Sylvania." If your home was built between 1950 and 1990 and you're unsure, call us for a free identification.
Yes. These panels are latent hazards — they function normally until a breaker needs to trip. The fact that nothing has gone wrong yet means you haven't had an overcurrent event that tested the breakers. It does not mean the breakers will work when called upon. Independent testing shows they frequently won't.
No. For FPE panels, the bus bar design is part of the problem — new breakers face the same seating and connection failures. For Zinsco panels, the aluminum clip-to-bus-bar connection degrades regardless of breaker age. Electrical safety experts specifically recommend against replacement breakers in either panel type. Full panel replacement is the only effective solution.
Homeowner's insurance typically does not cover the cost of upgrading a panel preventatively. However, some insurers offer premium reductions after a panel upgrade, and replacing a flagged panel may be required to maintain your coverage. Check with your carrier.
Most residential panel replacements are completed in one day. Power is typically off for 4–6 hours during the swap. For full service upgrades requiring JCP&L coordination, the total timeline may extend to 1–2 weeks from evaluation to final inspection.
Yes. All electrical panel work in New Jersey requires a permit from your local building department. We handle the entire permit process — application, inspection scheduling, and final sign-off.
Call (732) 851-8487 to schedule your free panel evaluation. Same-day appointments available. 24/7 emergency service for active panel failures.
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