Personally, PGL improved cabinet with GGD framework is an ideal choice for places with low power supply reliability requirements. GCS and MNS are both draw-out switchgear, which is characterized by independent isolation and replacement of each outlet circuit, convenient maintenance and high reliability. There are many outlet circuits, which occupy less space. It is suitable for places with frequent operation of outlet switches and frequent maintenance of switches and accessories, such as motor control, and frequent maintenance of contactors. The drawer structure of GCK is too simple, with no position indication and poor reliability. MNS is a patented product of ABB. The real MNS is only produced by ABB Low-voltage Factory in Xiamen, and the price is extremely high, with an average of more than 1, yuan per set. However, the manufacturing process is excellent, and the accessories used are of first-class quality, which is recommended by rich owners. For places that have high requirements on the construction area of the distribution room, but the outlet switches are not frequently operated and the switches and accessories do not need to be maintained, such as high-rise buildings such as office buildings or exhibition halls, conference centers, hotels and other places that have high requirements on power supply reliability, it is recommended to use fixed split switchgear and plug-in molded case circuit breakers, such as SIKUS of Siemens, Prisma of Schneider Electric Company and ArTu of ABB Company. These cabinets are all authorized by domestic manufacturers. The price is about 3% higher than that of GCS plus foreign brand circuit breakers, but it avoids the failure caused by the quality of drawer plug-ins (the main problem of domestic drawout type is the quality of drawers) and has the same advantages as drawout type cabinets.