As an example a fuse labeled ABC-10 250VAC, the ABC is a fuse style, the 10 is the amperage rating of the fuse and 250VAC is the voltage rating. All fuses also have a designated fail type like "slo-blo".
The real message here is to always replace the blown fuse with the same type and rating. If the fuse blows quickly again, it's time to see the doctor.
Wayner