Plugs are very common in our life, such as USB plugs and charger plugs, cell phone plugs that we have been using all the time, and so on. But what do you know about industrial plugs? Industrial plugs are used in industrial production, and are usually used in conjunction with large-scale mechanical equipment to ensure the normal operation of the equipment. However, industrial plugs are special electronic products and have their own classification. A switch is arrange between that resistance of the weatherproof socket and the electromagnetic switch; the fuse and the electromagnetic switch are connected with a pow line; the power line is provided with an electromagnetic switch normally open switch which is connected with a jack. The power socket has one or more seats into which circuit wiring can be inserted, through which various wiring can be inserted, so as to facilitate connection with other circuits. Industrial plugs are suitable for industrial use, and are generally divided into 3-core, 4-core, 5-core, etc. The current is generally divided into 16A, 32A, 63A, 125A, 250A, 420A, etc., and the protection level can be divided into IP44 and IP67, which are relatively conventional. Generally, it is used together with industrial sockets and connectors. One is the specifications: um cel, vce, cdd, psd, saus, pse, oni, up, etc. Second, it is classified according to structure. Industrial plugs include 2-core, 3-core and multi-core and 2-core plugs, which make the plugs with 2-core structure have a round pin plate shape. More than 2-core plugs, 3-core plugs are generally used for pin grounding. If pins are added, it will produce a series of structural problems which are much more complicated than 2-core plugs. For example, multi-core plugs are more complex. If multi-core plugs can be customized according to manufacturers, it is more difficult to consider whether the plugs can meet the use of equipment. Third, it is divided according to its functions. Industrial plugs are generally divided into three types: assembly, injection molding and conversion. Let's talk about injection molding plugs, which are formed by combining plugs and wires through high temperature and high pressure in an injection mold. If they cannot be separated during molding, they cannot be removed. This kind of plugs are durable and safe. Most of them are in the market, and the assembled plugs can be removed. This kind of plugs can ensure their flexibility. It is very convenient only by unscrewing the plugs and replacing them with plugs of different types. The converted plugs refer to plugs in this area.