Why use this 25 amp circuit breaker instead of a fuse? Circuit breakers can minimize down time in the event of an electrical failure. Once the short circuit our fault condition is corrected, Once the short circuit or fault is corrected, the breaker allows the circuit to come back online almost immediately. No need to hunt for and replace fuses or fusible links. Also, a shortstop circuit breaker can help diagnose weather an electrical fault is a short circuit or an overcurrent problem. Short circuits will cause the circuit breaker to trip almost immediately, while Andover current condition may take the circuit breaker up to a minute before it trips. This particular shortstop automotive circuit breaker is rated for 25 amps at 12 volts DC. Do not use to protect circuits with higher voltages than 12 volts. It has no mounting bracket, so it is suitable for use in a gang mounting bracket available separately. Uses standard number 10 ring terminals 4 wire connections on both the battery and auxiliary posts.