| 摘要 |
FIELD: electricity.SUBSTANCE: invention is referred to a switch (1) for direct-current devices comprising two fixed conductive contacts (2) with the first contact areas (21, 22), a movable conductive bridge (3) with two second contact areas (31, 32) for connection with two first contact areas (21, 22) in a switched on state and for the disconnection of the two first contact areas (21, 22) in a switched off state and two arc-blowout units (41, 42) and at least one second conductive and arc-guiding element (62) passes through the arc-blowout units (41, 42) formed so that arcs (51, 52) are guided from each of the second contact areas (31, 32) of the movable bridge (3) to the arc-blowout units (41, 42), two permanent magnets (71, 72) are placed adjacent to the first and second contact areas (21, 22, 31, 32), parts (621, 622) of the second arc-guiding element (62) are made of a material with magnetic permeability and coupled to the permanent magnets (71, 72) as the rear iron plate for the permanent magnets (71, 72).EFFECT: reliable arc blowing out.15 cl, 3 dwg |
