These are the cells that require switching even under secondary protection and short circuit, of which rated current is up to 1250 A and of which short circuit strength is up to 25 kA, and which are connected to distribution busbars via cables from below or sides.

3 polar and 3 position (open-closed-grounding rod) SF6 gas insulated separators are used in these cells as a standard and optionally air insulated revolving separators might be used.

Input cells with switch are used;