Supply of Rated 12kV, Extensible, SF6 Insulated, Motorized, very compact-sized, Ring Main Unit, with two rated 630 A main feeders (LBS) and rated 630 A Tee-Off vacuum type interrupter Circuit Breaker, with integrated RTU & Rated 12kV, Extensible, SF6 Insulated, Motorized, very compact-sized, Feeder switch, with one rated 630A main feeder and one rated 630 A Tee-Off vacuum type interrupter, Circuit Breaker with integrated RTU.