Can a DC fuse be used in an AC cricuit?

AdamK47

Lifer
Oct 9, 1999
15,652
3,517
136
I know it's unwise to use an AC fuse in a DC circuit. Is it bad to use a DC fuse in an AC circuit?
 

Mark R

Diamond Member
Oct 9, 1999
8,513
16
81
Yes. Provided that the DC voltage rating of the fuse is higher than the peak voltage of the AC waveform (RMS voltage * 1.4), and that the burst current rating of the fuse is greater than the prospective short circuit current of the supply.