HXGN15-12(F) and HXGN15-12(FR) compact fixed AC metal-enclosed switchgear (hereinafter referred to as “switchgear”) are designed for ring-main or radial power supply systems with a rated voltage of 12 kV and a rated current up to 630 A. They are especially suitable for installation in prefabricated substations to provide control and protection for power systems. This product incorporates the FLN36-120 SF₆ load break switch or the FLRN36-12D load break switch–fuse combination unit, both housed in insulated enclosures. It features compact size, light weight, simple operation, low operating force, reliable interlocking, and maintenance-free performance—making it a new-generation high-voltage switchgear meeting the requirements of urban power grid renovation and construction.