Switch having a quenching chamber

摘要

A switch for polarity-independent multi-pole direct current operation includes at least two switching chambers. Each switching chamber includes a single circuit breaker with a stationary contact having a first contact region and a movable electrically conductive contact part having a second contact region. The stationary contact and movable contact part are configured to create a connection between the first and the second contact regions in the ON state and to disconnect the first and the second contact regions in the OFF state. Each chamber also includes two arc chutes for quenching an arc forming between the first and the second contact regions when switching to the OFF state. At least two magnets are configured to generate a magnetic field so as to exert a magnetic force on the arcs to divert each arc in a direction of an arc chute independent of the direction of current.

主权项

1. A switch for polarity-independent multi-pole direct current operation, the switch comprising:
at least two switching chambers, each switching chamber including:
a single circuit breaker with a stationary contact having a first contact region and a movable electrically conductive contact part having a second contact region, the stationary contact and movable electrically conductive contact part being configured to create an electrically conductive connection between the first and the second contact regions in the ON state of the switch and to disconnect the first and the second contact regions in the OFF state of the switch,a first arc chute configured to quench an arc forming between the first and the second contact regions when switching to the OFF state from the ON state with current flow in a first direction, anda second arc chute configured to quench an arc forming between the first and the second contact regions when switching to the OFF state from the ON state with current flow in a second direction opposite the first direction; and at least two magnets configured to generate a magnetic field at least in the area of the first and the second contact region of the switching chambers so as to exert a magnetic three to divert an arc having current flow in the first direction into the first arc chute and so as to exert a magnetic force to divert an arc having current flow in the second direction into the second arc chute, wherein the movable contact parts of the switching chambers provide, upon creation of the electrically conductive connection between the first and the second contact regions in the ON state of the switch, a current path that is substantially aligned in parallel with the magnetic field generated in the switching chambers by the at least two magnets.