The Eaton NSB FAZ-B63 3N Miniature Circuit Breaker (MCB) is a protective device from the NSB FAZ-B63 family designed to interrupt electrical current during overloads or short circuits. As a miniature circuit breaker, it provides overcurrent protection for circuits and helps prevent damage in electrical distribution systems. This model—identified by the FAZ-B63 designation within Eaton's NSB line—is used wherever compact, automatic interruption of fault current is required.
