SF100 units, can form a whole modular switchgear that allows the manoeuver, control and switching of medium voltage networks up to 24KV, as well as feeding, connection and protection of numerous transformers as well as other equipments or devices connected to them, whereas providing the installation with electricity supply is critical, which can also be done in extreme cases bypassing the copper busbars, unlike full sf6 insulated sets where the whole module require intervention at factory, or replacing the entire unit.