A pump (1) for pumping a working fluid includes an electric motor (3) for actuating the pump and a motor (3) having a stator (31) and a rotor (32) that interact for the actuation of the pump. The rotor (32) is rotatable about an axis of rotation (320). The pump includes an electronic unit (4) for controlling the electric motor (3), a conduit (5) for the delivery of the working fluid downstream of the pump, a line (6) for cooling the electric motor (3), and the electronic unit (4). The cooling line (6) is permanently open and drawing off some of the working fluid processed by the pump. The cooling line (6) includes a first conduit (61) which is developed from a delivery area (22) of the pump.