Bussmann 25 amp 12-volt DC Automotive circuit breaker with right angle mounting bracket. When you need 25 amps of circuit protection, this short stop circuit breaker is an excellent product to fill that need. Reliable and dependable, the bussmann shortstop line of circuit breakers have been protecting automotive, marine, and other 12 volt electrical systems from short circuits and excessive current draw for decades. All electrical circuits, if not properly protected, can have catastrophic consequences such as fire in the event of a short circuit. Therefore, it is wise to always protect your wiring with either a circuit breaker or a fuse. Unlike a 25 amp fuse, this circuit breaker automatically resets itself after an electrical failure, eliminating the need to keep a supply of fuses on hand in order to get your equipment back up and running. Connections to the 25 amp shortstop circuit breaker are done using the two 10 - 32 studs. the copper stud is for battery power, and the other stud is for the power going to your device.