For some buyers, nothing short of brand new will do. Fortunately, used circuit breakers which have been reconditioned and re-certified work just as well as off-the-shelf models. For owners who need obsolete circuit breakers, there may not be much choice but to use reconditioned breakers depending on the age of the breaker box and the required parts. If your make and model number are no longer manufactured, you may find it on the shelves as a brand new item, but when supplies are gone, reconditioned breakers are the only items that will be available. It may take some getting used to, but many learn through necessity what bargain-hunters already know; used circuit breakers may be the only thing standing in the way of a complete upgrade of your electrical panel or breaker box.