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. Socket A socket into which one or more circuit wires can be inserted, through which various wires can be inserted to facilitate connection with other circuits.Industrial plugs are very suitable for the power supply of large-scale equipment, concerts (film, television, lighting, sound equipment and engineering), power generation and other electrified equipment that need a lot of energy.The live voltage in China is 220v and the frequency is 50hz. This is the voltage and frequency of most household appliances, but the industrial voltage is far from enough. In order to improve work efficiency and quality, most companies will choose to use machinery or large equipment for production. However, because the resistance of the equipment itself is very large, especially for large equipment, there is not enough voltage to work. But the voltage is too high, the plug can't be loaded, and it is easy to burn out. That's why industrial plugs are used.It replaces the traditional single and expensive industrial plugs, and gradually innovates to produce a new generation of powerful industrial plugs. Learn to read the plug model when buying.EP: two-pin flat plug2: Two-pin round plug (4mm)BP2: Two-pin round plug (5mm)BP3: Tripod round plugAP3: three-pin flat plugBP: Three-pin flat blunt plugThe industrial plug models represented by each letter above are common, but some are illustrative, and these data are not often used. Even if you don't use the above data, sometimes there will be new data, for example, the "ip" series of industrial plugs produced by our company. This is the protection level of industrial plugs, which consists of two numbers. The first number indicates its solid protection level, namely, the level of dustproof and other foreign invasions, and the second number indicates its liquid protection level, moisture-proof and waterproof invasion level. The larger the number, the higher the protection level. Ip44 stands for preventing solid objects larger than 1.0mm, tools, wires or similar details larger than 1.0mm in diameter or thickness, contact with components inside the lamps and lanterns, and water splashing, while the latter 4 stands for preventing water from splashing into the lamps and lanterns from all directions and causing damage.