A fuse unit is provided having a fuse element (2) in which a first terminal connecting part (4) and second terminal connecting parts (5) are formed and an insulative resin part (20) is formed on the outer surface of the fuse element (2) with insertion molding. Threaded bolt holes (10) are formed in the first terminal connecting part (4) and the second terminal connecting parts (5) of the fuse element (2). Bolts (30) are temporarily fixed to the fuse element (2) by being screwed into the threaded bolt holes (10), and the insulating resin part (20) is formed with insertion molding by using the fuse element (2) to which the bolts (30) are temporarily fixed as an inserted component.