CIRCUIT AND JUNCTION BOX WITH HOUSED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To reduce the number of fuses to be mounted, by adding a fuse function to a circuit inside a junction box. SOLUTION: The width of a part of a conductive part 21, exposed on the surface of a board 20 composed of an insulating resin at the circuit 13 which is housed inside the junction box 10, is made thin, and a fuse circuit 25 is formed. The circuit 25 is imparted with fuse functions, in such a way that the width of a thin width 25a is blown, when a current larger than 1 ampere flows. A fuse, with an allowable current of 1 A to be mounted on the junction box 10, is dispersed with.