A torque converter comprising: a front cover to which a power is inputted; an impeller coupled to the front cover, the impeller forming a hydraulic oil chamber together with the front cover, the impeller including an impeller core; a turbine from which the power is outputted, the turbine provided in opposition to the impeller, the turbine including a turbine core; a stator disposed between an inner peripheral part of the impeller and an inner peripheral part of the turbine, the stator regulating a flow of a hydraulic oil flowing from the turbine to the impeller; and a centrifugal clutch characterized in that the centrifugal clutch is disposed in a space between the impeller core and the turbine core and is configured to directly transmit the power from the impeller to the turbine when a rotational speed of the turbine is greater than or equal to a predetermined value, wherein the impeller core includes a friction surface having an annular shape, and the centrifugal clutch includes a centrifugal element, the centrifugal element supported by the turbine core while being radially movable and non-rotatable relative thereto, the centrifugal element pressed onto the friction surface by a centrifugal force acting thereon in rotation of the turbine, wherein the centrifugal element includes a magnet, wherein the torque converter further comprises: a holding member disposed radially inside the centrifugal element, the holding member capable of attracting the magnet of the centrifugal element, wherein the centrifugal element is separated from the friction surface of the impeller core while held by the holding member when the rotational speed of the turbine is less than the predetermined value. a front cover to which a power is inputted; an impeller coupled to the front cover, the impeller forming a hydraulic oil chamber together with the front cover, the impeller including an impeller core; a turbine from which the power is outputted, the turbine provided in opposition to the impeller, the turbine including a turbine core; a stator disposed between an inner peripheral part of the impeller and an inner peripheral part of the turbine, the stator regulating a flow of a hydraulic oil flowing from the turbine to the impeller; and a centrifugal clutch characterized in that the centrifugal clutch is disposed in a space between the impeller core and the turbine core and is configured to directly transmit the power from the impeller to the turbine when a rotational speed of the turbine is greater than or equal to a predetermined value, wherein the impeller core includes a friction surface having an annular shape, and the centrifugal clutch includes a centrifugal element, the centrifugal element supported by the turbine core while being radially movable and non-rotatable relative thereto, the centrifugal element pressed onto the friction surface by a centrifugal force acting thereon in rotation of the turbine, wherein the centrifugal element includes a magnet, wherein the torque converter further comprises: a holding member disposed radially inside the centrifugal element, the holding member capable of attracting the magnet of the centrifugal element, wherein the centrifugal element is separated from the friction surface of the impeller core while held by the holding member when the rotational speed of the turbine is less than the predetermined value. a holding member disposed radially inside the centrifugal element, the holding member capable of attracting the magnet of the centrifugal element, wherein the centrifugal element is separated from the friction surface of the impeller core while held by the holding member when the rotational speed of the turbine is less than the predetermined value.