... suppliers, welcome to check ring main unit price with us.11.HXGN-12(SF6) Unit type AC metal-enclosed ring main unitHXGN-12 ... -misuse features.Main features1, the load switch is a separate unit. Interior filled with sulfur hexafluoride gas as insulating medium. Long ... : 4, RMU can easily form a ring network power supply unit and other wiring, and can be infinitely extended:5, the ...