Abstract: A clutch assembly connectable to an electric motor and to another rotating unit includes a housing securable at one end to the housing of the electric motor and securable at the opposite end to the housing of the other rotating unit. A driven body within the clutch housing is rotatably mounted in a bearing supported in the clutch housing and is connectable in a driving manner to the other rotating unit. A drive body is connectable to the electric motor so as to be driven thereby and has radially movable centrifugal weights which engage and drive the driven body when the rotational speed of the drive body exceeds a predetermined value and which are disengaged from the driven body when the rotational speed is below the predetermined value.