Abstract: A branch box, having an interlayer connection structure of the invention, includes insulative bus bar boards, each having a plurality of juxtaposed bus bars mounted thereon, and also having a plurality of rows of terminal holding openings each row of which are formed in the bus bar board, and are spaced at predetermined intervals along a longitudinal side edge of a respective one of the bus bars, press-connecting terminal members mounted respectively in the corresponding terminal holding openings to be electrically connected respectively to the corresponding bus bars, a plurality of wires press-connected to press-connecting end blades of the corresponding press-connecting terminal members extending through the terminal holding openings, wire-holding insulative boards on which the wires are mounted in a fixed manner, and upper and lower casings covering these component parts.

Abstract: A branch box, having an interlayer connection structure of the invention, includes insulative bus bar boards, each having a plurality of juxtaposed bus bars mounted thereon, and also having a plurality of rows of terminal holding openings each row of which are formed in the bus bar board, and are spaced at predetermined intervals along a longitudinal side edge of a respective one of the bus bars, press-connecting terminal members mounted respectively in the corresponding terminal holding openings to be electrically connected respectively to the corresponding bus bars, a plurality of wires press-connected to press-connecting end blades of the corresponding press-connecting terminal members extending through the terminal holding openings, wire-holding insulative boards on which the wires are mounted in a fixed manner, and upper and lower casings covering these component parts.