The choice of industrial plugs is not just a simple random choice of a good one. There is a lot of knowledge that you don't know. If you still don't know that the selection method of industrial plugs is very thorough, here's a brief introduction for you. IP54, that is, dustproof level 5: it cannot completely prevent dust intrusion, 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. A switch is arranged between the weatherproof socket resistor and the electromagnetic switch; the fuse and the electromagnetic switch are connected with a power line; the normally open switch of the electromagnetic switch is arranged on the power line; and the normally open switch of the electromagnetic switch is connected with the jack. The power socket has a seat into which one or more circuit wires can be inserted, through which various wires can be inserted to facilitate connection with other circuits.1. The key of choice is that you must know that what you want is an industrial plug. This product, which is constantly innovated and researched, adds many types to this product. In order to meet the needs of different customers, different types of industrial plugs are produced, so you must thoroughly understand the shape of the product you want, whether it is waterproof or not, and where it will be installed.2. Next, let's learn about the general classification of industrial plugs, so that customers can know the general classification of different types of industrial plugs before they meet them:(1) waterproof typeWaterproof industrial plugs are classified according to the protection level. The protection level 44 is splash-proof industrial plugs. Generally, you can see that the other protection level 67 is immersion-proof (waterproof) industrial plugs.(2) Installation methodAccording to the installation method of industrial plugs, there are concealed type, also known as embedded type. Industrial plugs can be installed on the panel, which can save some space and can't be seen after normal wiring. The other, also known as Ming style, can be directly fixed on the wall or equipment and can be used normally.