You can use fuses with 36 volt rating on a 12 volt system.
The voltage rating on the fuse is the max voltage you can subject the fuse to and have it reliably cause an uneventful open circuit when it blows.
If you put a 36 volt fuse on a 250 volt system, when the fuse blows it could create a sustained arc, which would cause a fire or it could explode injuring people or damaging other near by equipment with hot flying fuse bits.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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