A fuse is an item used in the Dorgesh-Kaan agility course to repair the power station and complete a lap. The fuse is a light and delicate item, and can only be returned via the grapple route. The fuse is retrieved from the old generator room at the end of the agility course.
Attempting to take a fuse through a narrow gap will crush it, rendering it useless. When crushed, it does not display a warning when destroyed. When bringing the broken part to Turgall, he says "Oh, look at that broken part. Let me take it off you."