Permanent-magnet contactor arc extinguishing device

The invention provides a permanent-magnet contactor arc extinguishing device comprising vertical columns, rollers, a guide rail, an alumina ceramic piece, a ceramic piece fixing device, an electromagnetic operating mechanism, second permanent magnets, a moving contact, a static contact, and insulators. The ceramic piece fixing device connects the alumina ceramic piece to the electromagnetic operating mechanism which is used to control movement of the alumina ceramic piece. The alumina ceramic piece moves along the guide rails, and the alumina ceramic piece is arranged between the moving contact and the static contact. One vertical column is fixed at each of the two sides of the alumina ceramic piece. The upper surface of the alumina ceramic piece is equipped with the two fixed rollers. When the rollers move to below the moving contact, the height by which the moving contact is lifted is greater than the thickness of the alumina ceramic piece, so that friction between the alumina ceramic piece and the moving contact is prevented. The insulators are fixed on the static contact, and the second permanent magnets are fixed on the insulators. The second permanent magnets are disposed below the moving contact and spaced from the moving contact.