The MGX series gas insulated switchgear (C-GIS) is a new generation of switch products with independent intellectual property rights developed by the company, the three-position switch is the main primary component, which is sealed inside the inflatable compartment. The air chamber is welded and formed with 3mm thick high-quality stainless steel plate, which is not affected by the environment. It has reliable operation, guaranteed safety, compact structure design, small footprint, maintenance-free, long life and so on. MGX series switchgear is a complete set of power distribution equipment of 40.5kV three-phase AC 50Hz single bus and single bus Section system, which can be applied to 5500 meters high altitude working environment. It is mainly used for power generation companies, small and medium-sized generators, power distribution of industrial and mining enterprises, power reception and transmission of power system substations, and large high-voltage motor starting, etc., to implement control, protection and monitoring.