ATO/ATC regular blade fuses from Littelfuse, five of the same rating in each pack. Choose 3, 5, 10, 15 or 20 amps.

ATO and ATC fuses are the same size and fit the same slots: an ATO has an open bottom and an ATC is fully sealed. This is the classic 19 mm blade fuse found in older vehicles, trucks, RVs, inline fuse holders and most add-on fuse blocks.

Pick the right one

Always replace a fuse with the same type and rating. The colour shows the rating: violet 3 A, tan 5 A, red 10 A, blue 15 A and yellow 20 A. Never fit a bigger fuse to stop one blowing. It lets the wire overheat instead.

Not sure your fuse is an ATO/ATC? Compare it at true size with our Fuse Identifier. Adding a circuit? You'll want an ATO/ATC fuse tap.