Technically you should use a 32V automotive fuses, but any voltage should be acceptable. The metal used and internal resistance is different but they will work.
Essentially 32V fuses are designed for a lower voltage drop, with a 12V system you want minimal drop. Higher voltage fuses must blow in a way that does not create arcing, with 12V the possibility of arcing is next to nonexistent. A 32V 15A fuse usually has a fairly larger "I" shaped link probably made of low melting point metal, a 15A 120/240V fuse has a thin wire that gets red hot before it blows. 20,000V fuses are as long as your arm and packed with arc suppressing stuff. Still, they will all blow when overloaded.