SF6 circuit breaker assembly for 40.5 kV

The utility model relates to the field of electrical equipment, in particular to an SF6 circuit breaker assembly for 40.5 kV, which comprises two vertically arranged mounting substrates, a plurality of arc extinguish chambers are fixed between the mounting substrates, the bottom of each arc extinguish chamber is provided with a contact component capable of moving up and down, the outer side of each contact component is fixedly connected with a movable component, and the movable component is fixedly connected with the mounting substrates. A grading ring is designed on the periphery of the support, the movable part drives the contact part to move up and down, the support is fixed on the outer side of the installation substrate on one side, and the support is movably connected with the other end of the movable part. According to the utility model, an integrated design scheme is adopted, so that the high-voltage switch cabinet has better insulating performance and more excellent performance. 本实用新型涉及电气设备领域，尤其是涉及一种