FIELD: electricity.
SUBSTANCE: device to connect and disconnect the load to or from an AC voltage supply line comprises two mechanical switches (60, 61), connected in series in a current circuit between the above load and above supply line, at the same time each switch has a bypass branch with at least one element (64, 65), capable of blocking current passing through it, at least in direction of blocking, and of passing current through it at least in one direction, and a unit made as capable to control the procedure of disconnection and connection synchronously with the current in the supply line and voltage in the supply line, accordingly.
EFFECT: reduced current rush during connection and disconnection.
45 cl, 32 dwg
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