How to Tell If a Breaker Is Bad

If you're experiencing power issues in your home, a bad circuit breaker could be the root cause. Below are the most common signs of a failing breaker, along with what they typically indicate and how to respond.

If a breaker trips often, even under normal electrical loads, the issue may not be with the devices on the circuit — the breaker itself could be worn out. Over time, breakers can lose their ability to correctly gauge current, causing them to trip unnecessarily.

Unplug everything on the circuit and try resetting the breaker. If it still trips, have a licensed electrician inspect it. Repeated tripping can be a warning sign of internal failure or hidden circuit issues.

When a breaker immediately trips again after being reset — or won’t reset at all — it could indicate a short circuit or internal damage to the breaker mechanism. Some older or degraded breakers can't hold their reset position due to internal wear.

If unplugging devices doesn't resolve the issue, stop using the circuit and schedule an inspection. Continuing to reset a damaged breaker can increase the risk of overheating or fire.

A burning smell near your electrical panel, or blackened marks around a breaker, is a serious warning sign. This usually means that the breaker is overheating or arcing — potentially due to loose connections, corrosion, or a deteriorated component.

Cut power to the affected circuit and avoid touching the panel. Contact a licensed electrician immediately. Burn damage around the breaker could also mean that the breaker box itself needs repair or replacement.

Circuit breakers should remain at or just above room temperature. If a breaker feels hot to the touch, that indicates it may be overloaded, undersized, or failing. Persistent heat can damage nearby breakers or wiring insulation.

Stop using the affected circuit and have the breaker evaluated. Replacing it with the correct type and rating is critical for system safety.

If outlets or lights on a circuit don’t work, even though the breaker appears to be on, the breaker could be malfunctioning internally. The switch might look fine, but the contacts inside may have failed or become stuck open. The indvidual outlets or switches could have failed as well.

Check for GFCI and try to reset the breaker. If the problem persists, it needs to be assessed by a professional electrician. This issue is common in aging electrical panels or outdated brands like Federal Pacific and Zinsco.

If your breaker is acting up and you're unsure what to do next, don’t guess — a faulty breaker can create serious safety risks. Site Electric Services provides expert electrical troubleshooting and circuit breaker replacement throughout Napa, Benicia, Concord, Walnut Creek, and Vallejo. Call (707) 653-0376 o get fast, licensed support from a local professional.