FIELD: electricity.
SUBSTANCE: switch device comprises: a switching module, containing the first detachment contact for every electric pole, the second detachment contact and one or more solid-state switches. The device also comprises a supporting frame, containing the third detachment contact and the fourth detachment contact for every electric pole. These contacts are connected with/detached from the first and the second detachment contacts respectively when the switching module is in Add/Drop condition towards the supporting frame. In the switch device, there is a drive vehicle for the switching module displacement between the Add condition and the mentioned Drop condition and vice versa. And there is an actuating unit, composed of the controlling mean, which is configured to coordinate the drive vehicle and solid-state switches work, at a time when the switching module Add/Drop function must be executed in such a way that the drive vehicle displaces the switching module only if the solid-state switches are closed.
EFFECT: point heavy wear prevention attended by the notable electrical endurance decrease.
12 cl, 20 dwg
