Electric current switching apparatus with arc spinning...

Details Electric current switching apparatus with arc spinning... Electric current switching apparatus with arc spinning...

H - Electricity

01

H

H01H 33/14 (2006.01) H01H 9/36 (2006.01) H01H 9/44 (2006.01) H01H 9/34 (2006.01) H01H 33/59 (2006.01)

Patent

CA 2240078

An electric arc extinguishing mechanism is provided for an electric current switching apparatus of the type having a pair of contacts which selectively engage to complete an electric circuit. The mechanism includes a plurality of splitter plates located adjacent to the contacts and formed of electrically conductive material. Each splitter plate has a body of electrically conductive material, and a casing with a pair of planar portions on opposite sides of the body and connected by the curved edge portion. The edge portion is adjacent the contacts with the planar portions extending from the edge portion in an open loop having a gap. Any arc introduced between adjacent splitter plates moves around the open loop before being extinguished thereby not residing in one spot long enough to cause gross melting and associated erosion of the splitter plate.

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