The GSR-12 environmentally friendly intelligent gas-insulated ring main switchgear is a green and intelligent ring main unit introduced by our company, incorporating advanced environmentally friendly and intelligent design concepts from Germany. This series utilizes dry gas as the insulating medium, with the primary main circuit of the switchgear sealed in a gas tank welded using advanced robotic welding technology and rigorously tested with helium mass spectrometry for leak detection. It employs mature and reliable vacuum arc-extinguishing chambers as the main breaking components for vacuum circuit breakers and load switches, and features a uniquely designed three-position isolating switch to ensure safe and reliable operation and maintenance of the distribution network.