HRM6-12/24 SF6 common box type gas insulated switchgear (hereinafter referred to as gas insulated switchgear) adopts modular design, with its perfect integration of fixed type and flexible expansion, to meet the requirements of end users or network nodes, and at the same time meet the needs of various distribution switchgear, box-type substations, cable branch boxes, with the characteristics of compact structure, safety and reliability, long life and maintenance-free.