Caution: fuses, breakers, resistors, and quite frankly, all electric or electronic components, have a voltage rating. A 12vdc automotive fuse is not built with sufficient clearance or creepage to guarantee that 120vac or 230vac won’t accidentally conduct to the wrong places.
A quick look at high-voltage fuses up on a utility pole reveals that they are indeed built larger for higher voltage. OP is correct to be concerned, but because of voltage, not necessarily because of AC or DC.
Caution: fuses, breakers, resistors, and quite frankly, all electric or electronic components, have a voltage rating. A 12vdc automotive fuse is not built with sufficient clearance or creepage to guarantee that 120vac or 230vac won’t accidentally conduct to the wrong places.
A quick look at high-voltage fuses up on a utility pole reveals that they are indeed built larger for higher voltage. OP is correct to be concerned, but because of voltage, not necessarily because of AC or DC.