Abstract: A connector includes an apparatus-side connector housing attached to a casing of an inverter. The apparatus side-connector housing has a plurality of busbars. Each of the busbars has on one end portion a terminal fitting portion where a mating connector of the apparatus-side connector housing is connected and on the other portion an inverter-side terminal portion where an output terminal of the inverter main circuit board is connected. The busbars are divided and arranged into groups respectively corresponding to the U, V and W phases with respect to the inverter-side terminal portion. The busbars are arranged into groups respectively including the U, V and W three-phases for connection to each of the three-phase loads, with respect to the terminal fitting portion. A wire connecting inverter with a plurality of there phase loads can be arranged with respect to each of three phase loads with small space.