| 摘要 |
<p>The invention relates to a switch having a fast quenching behavior for electric arcs irrespective of the respective polarity and being suitable for multi-pole operation. The switch comprises at least two switching chambers (11a, 11b) having two-way switches with two separate immobile contacts (2) each, said contacts having respective first contact regions (21, 22), a mobile electrically conducting contact piece (30) having two second contact regions (31, 32) for establishing respective electrically conductive connections between the first and second contact regions (21, 22, 31, 32) in the ON state of the switch (1) and for interrupting the first and second contact regions (21, 22, 31, 32) in the OFF state of the switch (1) and at least two quenching devices (41, 42, 43) for quenching electric arcs (5) that may occur between the first and second contact regions (21, 22, 31, 32) when the OFF state is established. The switch further comprises at least two magnets (71, 72) for producing a magnetic field (M) at least in the region of the first and second contact regions (21, 22, 31, 32) of the switching chambers (11a, 11b) to exert a magnetic force (F) onto the electric arcs (5) such that at least one of the electric arcs (5) is driven towards one of the quenching devices (41, 42, 43) irrespective of the current direction (I) in the electric arc (5), the contact pieces (30) of the switching chambers (11a, 11b) being arranged such that the second contact regions (32, 32) are located in a line substantially at a right angle to the direction of movement (T) of the electric arcs (5).</p> |
