That makes it so I don't have to hope I have the right size fuse, and fuses are way overpriced anyway. Buy a circuit breaker for around $5, if I remember correctly, and do this. I have a 2A, 3A, and 5A one, and if something happens, the breaker trips instead of blowing a fuse.
Also, if you have a fuse inside an open fuse holder, you can take a burnt out fuse and solder one of those circuit breakers across them and put them in their holder. I haven't yet figured out a plug and play way to replace the fuses that insert into a closed holder with a circuit breaker.