To make a distribution block compact by electrically connecting one terminal blade of a bus member to the terminal of each removable circuit element by means of each connector element.

A conductive bus member 45 is provided with a plurality of terminal blades 60 respectively extended from the leg sections of its U-shaped base part 55. A plurality of attaching structure sections of, preferably, an undercut 65 are respectively provided at the positions of the terminal blades 60 of the leg sections of the base part 55. When the terminal blades 60 are used, a plurality of circuit elements can be attached to the bus member 45. In addition, electric power can be supplied to the circuit elements by electrically connecting a power line to one spot of the base part 55 even when jumpers or individual circuit wires are not used. Since the bus member 45 can make a large current to flow without generating excessively high heat even when the circuit elements are closely arranged, the reliability of the member 45 is improved and the size of the member 45 can be reduced.