A bus bar unit which is configured to supply power to coils of a plurality of phases and has a ring shape, comprising: a plurality of phase bus bars (47U, 47V, 47W) which are provided for each phase and which include phase terminals (49U, 49V, 49W), each coil having one end electrically connected to the corresponding phase terminal; and a neutral point bus bar which includes neutral point terminals, each coil having its other end electrically connected to the neutral point terminals; the bus bar unit is to be placed at an axial end of a stator of a motor and is to be coaxial with a center axis of the motor, the phase bus bars (47U, 47V, 47W) and the neutral point bus bar are disposed so as to be laminated along an axial direction of the bus bar unit in a state where a predetermined insulation distance is maintained from each other, characterised in that: at least one bus bar out of the phase bus bars (47U, 47V, 47W) and the neutral point bus bar is formed by bending an elongated plate-shaped member, which is punched from a metal plate, into a C-shaped bus bar such that a width direction of the elongated plate-shaped member and a radial direction of the bus bar unit coincide with each other, and the thickness direction of the elongated plate-shaped member coincides with the axial direction of the bus bar unit, and wherein the elongated plate-shaped member includes a plurality of bus bar pieces in which the terminals are formed and connection portions which connect the bus bar pieces adjacent to each other, and a width of at least a portion of the connection portion is narrower than a width of the bus bar piece. a plurality of phase bus bars (47U, 47V, 47W) which are provided for each phase and which include phase terminals (49U, 49V, 49W), each coil having one end electrically connected to the corresponding phase terminal; and a neutral point bus bar which includes neutral point terminals, each coil having its other end electrically connected to the neutral point terminals; the bus bar unit is to be placed at an axial end of a stator of a motor and is to be coaxial with a center axis of the motor, the phase bus bars (47U, 47V, 47W) and the neutral point bus bar are disposed so as to be laminated along an axial direction of the bus bar unit in a state where a predetermined insulation distance is maintained from each other, characterised in that: at least one bus bar out of the phase bus bars (47U, 47V, 47W) and the neutral point bus bar is formed by bending an elongated plate-shaped member, which is punched from a metal plate, into a C-shaped bus bar such that a width direction of the elongated plate-shaped member and a radial direction of the bus bar unit coincide with each other, and the thickness direction of the elongated plate-shaped member coincides with the axial direction of the bus bar unit, and wherein the elongated plate-shaped member includes a plurality of bus bar pieces in which the terminals are formed and connection portions which connect the bus bar pieces adjacent to each other, and a width of at least a portion of the connection portion is narrower than a width of the bus bar piece. at least one bus bar out of the phase bus bars (47U, 47V, 47W) and the neutral point bus bar is formed by bending an elongated plate-shaped member, which is punched from a metal plate, into a C-shaped bus bar such that a width direction of the elongated plate-shaped member and a radial direction of the bus bar unit coincide with each other, and the thickness direction of the elongated plate-shaped member coincides with the axial direction of the bus bar unit, and wherein the elongated plate-shaped member includes a plurality of bus bar pieces in which the terminals are formed and connection portions which connect the bus bar pieces adjacent to each other, and a width of at least a portion of the connection portion is narrower than a width of the bus bar piece.