The distribution board is usually composed of cabinet, switch, protection device, electric energy meter, etc., and other anime devices. The main purpose is to facilitate power outage and transmission, play a role in metering and protection, and facilitate maintenance in case of circuit failure. The distribution board can be used alone or as a supporting device for mechanical equipment. With the increasing requirements for various mechanical equipment, the processing and manufacturing of distribution boards are also constantly improving and improving. At present, the distribution board industry is already a mature industry; Due to the upgrading of electrical components and the improvement of mechanical processing level, the quality of distribution boards has been greatly improved