FIELD: electricity.
SUBSTANCE: invention relates to electric switching device with the first interrupting unit for interruption and connection of electric line, in particular, to grounding switch with air insulation. Besides, invention relates to method for switching of grounding switch with air insulation, besides, on grounding switch with air insulation no electric arc is generated as a result of breakthrough in case of overvoltage. According to invention, it is provided that the second interrupting unit connected in parallel to the first interrupting unit is switched so that electric arc ignition generated in process of switching only happens in the second interrupting unit.
EFFECT: provides for arcless switching of grounding switch.
23 cl, 4 dwg
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