CPC H01H 9/346 (2013.01) [H01H 9/341 (2013.01); H01H 9/36 (2013.01); H01H 2009/367 (2013.01)] | 17 Claims |
1. A DC circuit breaker comprising:
an arc chamber,
wherein the arc chamber comprises:
an entry side adapted to receive an electric arc which was generated outside of the arc chamber and which propagates in a forward direction;
a plurality of stacked splitter plates; and
at least two inhibitor barriers arranged on the entry side to inhibit a reverse propagation of the electric arc out of the arc chamber in a reverse direction;
wherein the at least two inhibitor barriers are arranged, in a top view of the arc chamber, in opposite corner parts on the entry side of the arc chamber, and
wherein the at least two inhibitor barriers at the corner parts on the entry side of the arc chamber are configured such that a flow of gas cannot pass in the reverse direction beyond an entry area of the arc chamber in a region where the at least two inhibitor barriers are provided,
an inlet of an exhaust channel in a region of each of the at least two inhibitor barriers,
wherein the exhaust channel extends to a gas outlet formed on a side of the arc chamber different from the entry side.
|