Generally speaking, a well-installed switchboard in decent conditions should last between 20 to 40 years. But that's just a ballpark figure. What is the life expectancy of switchgear? Resolution: There are no set limits per standards of the life of an equipment. The components, like a circuit breaker have a limited performance (10,000 mechanical operations, 10,000 load current and 50 maximum short circuit operations). After that the. I know that Elec Distribution Equipment (Panelboards, Switches etc. Most residential switches and outlets function reliably for 15 to 25. Wiring is a vital component in your home's electrical infrastructure, and like switches and outlets, life expectancy can vary by type and care.