There are many kinds of connectors on the market, and their performance is different. How to choose them? Xiaobian technical engineer, please tell us about the centralized method.I. Type of connectorWhen we choose a connector, the first consideration is what kind of connection type we need, what to connect, where to use it, what kind of terminals to use and how many conductive terminals to arrange. Industrial plugs are suitable for industry, 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 with industrial sockets and industrial connectors. 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. CEE connector CEE standard industrial plug socket is an explosion-proof socket, and the temperature is limited below 32 degrees.Second, the environmental requirementsIf the connector is used in corrosive, humid or high-temperature environment, it should be considered whether its air tightness, temperature and humidity can meet the requirements of the use environment. In addition, vibration and influencing factors should also be taken into account, whether they have influence on the use of the connector.III. Electrical requirementsWhen choosing a connector, it is also important to consider the electrical requirements of the connector. The two products are connected by connectors, and the connectors should meet the electrical requirements of the products. If the connectors do not meet the current and voltage requirements of the products, it may lead to circuit failure and equipment damage, which is something we don't want to see.IV. Specification requirementsConnectors of the same model have different specifications. How to choose your own specifications will teach you a simple and practical method. Report the number and size requirements of your own connectors to the manufacturers, and they will choose your specifications for you. Save you a lot of trouble.V. Mechanical performance requirementsWhen selecting connectors, we should also consider the mechanical properties such as the contact area of internal contacts, the use frequency of terminals, and the allowable dimensional tolerance. We should carefully understand the performance of the product, and we can swim and fish when choosing.