A bus bar module for connecting coil wires, which are attached to a stator core of a rotating electric machine, to each other and for connecting the coil wires to power lines of the rotating electric machine, the bus bar module comprising: at least one coil bus bar for connecting with the coil wires; at least one power line bus bar for connecting with the coil wires and the power lines, the power line bus bar being a flat plate member bent into a U-shape, and the at least one coil bus bar and the power line bus bar are integrated by an insulating member, which is a resin molded product and covers and insulates the at least one coil bus bar; a bus bar module main body which has a cylindrical shape and which contains the at least one coil bus bar; wherein the U-shape of the power line bus bar has a bottom portion and two straight portions (48, 50) extending from the bottom portion in the axial direction of the cylindrical shape; and at least one power line bus bar support portion which extends in the circumferential direction of the cylindrical shape outward from the bus bar module main body and supports the power line bus bar, the power line bus bar support portion including a beam through which the bottom portion of the power line bus bar penetrates and which contains a part of the power line bus bar to thereby be coupled with the part of the power line bus bar, wherein: the bottom portion of the power line bus bar has a protrusion and/ or an elongate hole or a notch in a portion contained in the beam, the protrusion, the elongate hole and the notch extending in the circumferential direction of the cylindrical shape, which intersects with a direction in which the power line bus bar penetrates through the beam; and the power line bus bar support portion has two arms extending radially outward from the bus bar module main body, wherein the beam connects between the two arms. at least one coil bus bar for connecting with the coil wires; at least one power line bus bar for connecting with the coil wires and the power lines, the power line bus bar being a flat plate member bent into a U-shape, and the at least one coil bus bar and the power line bus bar are integrated by an insulating member, which is a resin molded product and covers and insulates the at least one coil bus bar; a bus bar module main body which has a cylindrical shape and which contains the at least one coil bus bar; wherein the U-shape of the power line bus bar has a bottom portion and two straight portions (48, 50) extending from the bottom portion in the axial direction of the cylindrical shape; and at least one power line bus bar support portion which extends in the circumferential direction of the cylindrical shape outward from the bus bar module main body and supports the power line bus bar, the power line bus bar support portion including a beam through which the bottom portion of the power line bus bar penetrates and which contains a part of the power line bus bar to thereby be coupled with the part of the power line bus bar, wherein: the bottom portion of the power line bus bar has a protrusion and/ or an elongate hole or a notch in a portion contained in the beam, the protrusion, the elongate hole and the notch extending in the circumferential direction of the cylindrical shape, which intersects with a direction in which the power line bus bar penetrates through the beam; and the power line bus bar support portion has two arms extending radially outward from the bus bar module main body, wherein the beam connects between the two arms. the bottom portion of the power line bus bar has a protrusion and/ or an elongate hole or a notch in a portion contained in the beam, the protrusion, the elongate hole and the notch extending in the circumferential direction of the cylindrical shape, which intersects with a direction in which the power line bus bar penetrates through the beam; and the power line bus bar support portion has two arms extending radially outward from the bus bar module main body, wherein the beam connects between the two arms.