The unique vertical and horizontal separation structure of GCS-D low-voltage fixed partition cabinet separates equipment into separate small rooms, isolating the main busbar system, distribution busbar system, functional units, and cable connection space from each other, ensuring the independence and safety of low-voltage switchgear during maintenance and repair, preventing the expansion of faults and avoiding the danger of electric shock, and achieving safe power supply and distribution of equipment. Mainly used in industries such as subways, data centers, hospitals, hotels, power plants, power stations, chemical, metallurgical, light industry, and residential power distribution.