A contact device has a pair of flanges which extend inward in the radial direction from both ends of an annular shield, and a plurality of contact pieces which are arrayed in the circumferential direction in a space formed by the shield and the pair of flanges, the axial direction thereof being matched to the parallel direction with the axial center of the shield. Contact sections are provided on the outer peripheral surfaces at both ends of each contact piece. The contact device also has a plurality of rod-shaped elastic members disposed in the circumferential direction on the flanges, each of the elastic members being cantilever-fixed to the flange in such a manner that one end thereof is secured to an inner edge surface of the flange and the other end thereof is allowed to extend along the axial center of the shield into a space formed by the shield and the pair of flanges. The rod-shaped elastic members elastically support the contact pieces to restrict the contact pressure of the contact sections. The contact device is capable of carrying large current while controlling an increase of the outside diameter thereof.