Fluorine-free environment-friendly gas inflation ring main unit

The utility model belongs to the technical field of power switch equipment, and particularly relates to a fluoride-free environment-friendly gas inflation ring main unit. The fluorine-free environment-friendly gas inflation ring main unit comprises a shell and is characterized in that CO2 gas is sealed in the shell, a static contact seat is fixed above the shell, an isolation contact knife is arranged below the static contact seat, a conductor is connected below the isolation contact knife, an arc extinguish chamber is connected below the conductor, and the lower end of the arc extinguish chamber is connected with a wire outlet sleeve through a branch bus. The SF6 gas cabinet has the advantages that the SF6 gas cabinet has the same size as the SF6 gas cabinet and is provided with a real isolation port, part of components can be commonly used with the SF6 gas cabinet, and matching performance is good. The whole structure is good in reliability, flexible in arrangement, small in occupied area, highly modularize