Fuse, composite fuse, and electrical connection box

A fuse, comprising:

• a columnar main body portion having a first end surface and a second end surface;
• a male tab provided on the first end surface;
• and
• a fixing tab provided on the second end surface,
• wherein the main body portion is configured to melt when a current of a predetermined value or more flows between the male tab and the fixing tab,
• the fixing tab includes a first connection portion extending in a first direction in which the main body portion extends, a second connection portion extending from a leading end of the first connection portion in a second direction orthogonal to the first direction, and a fixing portion that is connected to a leading end of the second connection portion and has a fixing hole passing through the fixing portion along a fixing axis extending in the first direction, and
• the fixing portion has a plurality of fixing pieces that are arranged side by side in a circumferential direction centered on the fixing axis and that are formed into arc shapes centered on the fixing axis, and the fixing portion is formed into an open annular shape that has a level difference at each predetermined angle in the circumferential direction due to the plurality of fixing pieces being arranged so as to be shifted with respect to each other in the first direction, the open annular shape having a first annular end and a second annular end that are spaced apart from each other at a predetermined interval in the circumferential direction.