The ornamental design for a fuse, as shown and described.
FIG. 1 is a front, top and left side perspective view of a fuse showing our new design;
FIG. 2 is a front view thereof, the rear view being identical to the front view;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof; and,
FIG. 5 is a right side view thereof, the left side view being identical to the right side view.
The oblique shade lines shown in the drawings represent that the cover is transparent. The broken line portion of the figure drawings is included to show portions of the article that form no part of the claimed design.