Arc extinguishing device for electric switch mounting device, has plate sections produced by insulation materials arranged between inlet supporting feet to cover inlet supporting feet and longitudinal side edges

摘要

The device has arc extinguishing plates with inlet areas (27). Inlet incisions (28) extending along an electric arc movement direction are formed between two inlet supporting feet (30, 31) from narrow side edges (26), and opened toward electric arc entering parts. A stack is arranged between two electric arc guide buses. Plate sections (40, 41) produced by insulation materials are arranged between the inlet supporting feet to cover the inlet supporting feet and longitudinal side edges (32, 33). The plate sections are produced by gassing plastics.