| CPC H01H 33/7069 (2013.01) | 10 Claims |
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1. An arc extinguishing assembly, comprising:
a first side member having a first inner surface;
a second side member having a second inner surface that is spaced apart by a certain distance and disposed to face the first inner surface of the first side member;
an exhaust which is installed at an upper part of the first side member and the second side member;
a plurality of grids which are installed between the first side member and the second side member and having both ends fixed to each of the first side member and the second side member; and
first arc guide that includes:
a first extension portion that is coupled to both sides of the first inner surface of the first side member and which is installed at a lower part of the plurality of grids;
a second extension portion extending from the first extension portion at a predetermined angle relative to the first extension portion;
wherein at least one area of the first extension portion and the second extension portion of the first arc guide is coated with a first ceramic layer; and
a second arc guide that includes:
a first extension portion that is coupled to both sides of the second inner surface of the second side member and which is installed at the lower part of the plurality of grids;
a second extension portion extending from the first extension portion at the predetermined angle relative to the first extension portion, disposed to face the second extension portion of the first arc guide;
wherein at least one area of the first extension portion and the second extension portion of the second arc guide is coated with a second ceramic layer;
wherein each of the first arc guide and the second arc guide has a given heat resistance and comprises a material capable of securing insulation performance even by reaction with a generated arc.
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