To downsize an electric connection box loading fuses.

A tab 12 having a slot 13 for pressure welding is formed integrally with a busbar 15 housed in a housing 10 which has a fuse box 11 on the surface, and is projected upright from the bottom. A fuse 1 is composed of an insulating resin case 2 and a conductor having an input terminal 3 as well as an output terminal 4 punched out of one metal sheet and a fuse blowout part 5. The input terminal 3 and the output terminal 4 are exposed for contacting with the tab 12 projected from a bottom face 11a of the fuse box 11, and a tip of the exposed part is positioned, not projected over and above the bottom face 2a of the above resin case 2, and is made to contact at a position higher than the bottom (2a) of the case (2) by inserting into the pressure welding slot 13 of the tab 12. The bottom face 2a of the case 2 is made in contact with the bottom face 11a of the fuse box 11.