A fuse unit (1) characterized by being equipped with a fusible link (2) connected to a battery terminal (110) and having a fuse element that melts when an overcurrent flows therethrough, and a holding mechanism (3) having: a base section (31) interposed between the battery terminal (110) and an upright-post-mounting surface (105) of a battery housing (101) in a state where the battery terminal (110) is fastened to a battery post (102) provided on the upright-post-mounting surface (105); and a holding part (32) for holding the fusible link (2) on the upright-post-mounting surface (105), and connected to the base section (31). As a result, it is possible to minimize the load acting on the battery post (102).
