The answer to 'lifespan of circuit breaker' is that a properly maintained circuit breaker can last 30-40 years or more. Circuit breakers are designed to be long-lasting electrical components in your home's electrical system. With regular inspection and testing, they can reliably protect your home from electrical overloads and short circuits for decades.
The actual lifespan of a circuit breaker depends on several factors, including the quality of the breaker, how often it is used, and the environmental conditions it is exposed to. Breakers located in damp or humid areas may have a shorter lifespan than those in dry, climate-controlled environments. Additionally, circuit breakers that frequently trip due to electrical issues may wear out faster than those that rarely activate.