Industrial plugs are common in industry. Generally speaking, industrial plugs can be divided into 3, 4 and 5 cores. IP54, that is, dust prevention is level 5: dust intrusion cannot be completely prevented, but the amount of dust intrusion will not affect the normal operation of the product; Waterproof grade 4: prevent splashing water from invading, and prevent splashing water from all directions from invading. NEMA wiring device must be as small as possible in order to realize frequent commutation, but also to realize braking during commutation and acceleration after commutation. Therefore, it is necessary to adopt commutation device quickly and braking device effectively. Embedded socket is embedded in the integrated communication cabinet, which is a power supply device that provides basic DC power for communication and data equipment in the same cabinet. It also has certain versatility. According to the number of cores, wires are divided into sixteen amperes, 32 amperes, 63 amperes, 125 amperes, 250 amperes, 420 amperes and so on. The protection level of industrial plugs can be divided into ip44 and ip67. These are the basic characteristics of industrial plugs, which are basically used together with connectors.Waterproof industrial plug: This kind of socket is a common socket above the base of industrial plug, with a waterproof cover, which can make full use of the characteristics of the waterproof cover to cut off short circuit, electric leakage and other faults caused by conductive water vapor and liquid substances entering the inside of industrial plug.Drainage plug: This kind of industrial plug is designed to protect the whole industrial plug from contact with conductive materials by sealing method and special structure. There is a drainage hole above this kind of industrial plug, so that when water vapor enters the socket, it can be discharged through the drainage hole in time. At the same time, a layer of rubber is arranged on the contact layer between the industrial plug and the wall. This is to prevent liquid from entering the industrial container on the wall. Industrial drainage socket can prevent all kinds of conductive liquids from entering the socket!After reading the above, everyone has a clear understanding of the advantages of industrial plugs. I hope that by studying this paper, we can solve some social problems. /；