How long do AFCI circuit breakers last?

The average operational lifespan of an Arc-Fault Circuit Interrupter (AFCI) breaker typically ranges between twenty and thirty years under normal indoor environmental conditions, though their internal electronic components make them slightly more susceptible to premature failure than traditional mechanical breakers. Environmental factors such as high ambient panel temperatures, humidity, power surges, and frequent exposure to heavy fault currents can degrade internal microprocessors and sensors over time. You can troubleshoot breaker health easily by pressing the built-in monthly test button. You can verify that your corrective action is successful when the breaker instantly trips and cuts power when the test button is pressed confirms that the internal electronic sensing circuitry is functional and healthy.