Xiria is a well-designed environmental protection gas insulated distribution ring network cabinet. This product can adopt the cooperation of low energy consumption tripping mechanism and self supply type protection relay to perfectly realize the application of replacing the traditional fuse combination electric appliance. It can realize maintenance free and meet the upgrading application of distribution network automation. All primary electrical components and mechanical devices are installed in the fully enclosed enclosure, effectively preventing the dust, moisture and other adverse environmental factors from affecting the operation of the ring main unit. The mechanical switch device is not only designed to be composed of the least components, but also is particularly suitable for switching action after a long period of standstill to match the actual operation of the switch. In addition, the mechanical device does not use any lubricant, maintenance free.