MINI circuit breakers are designed to replace MINI fuses in most applications. MINI circuit breakers are available as Type 1 and Type 2 - Type 1 auto reset circuit breakers will trip in an overload happens, then attempt to automatically reset the circuit breaker until the overload condition is removed. Type 2 modified reset circuit breakers will keep the circuit breaker open after tripping until power is removed from the circuit breaker. MINI breakers are compatible with MINI fuse blocks and fuse holders. The height of the circuit breaker is about twice the height of a fuse, so be sure to check that there is enough room for the circuit breakers to fit. These MINI circuit breakers have a 14 volt DC rating and are for use with 12 volt electrical systems only.