空气开关和漏电保护器区别（The difference between the air switch and the leakage protector）.doc

空气开关和漏电保护器区别（The difference between the air switch and the leakage protector） Difference between air switch and leakage protector The air switch acts as a zero line and a live wire. When the current between the two wires is too large, it will trip automatically, acting like a fuse. The leakage protector is fire action, if people contact through the human body and the earth wire, then form a loop, with additional current through the zero line, an electromagnetic device which will automatically trigger, will immediately tripping, power-off protection body. These two devices are all electromagnetic principle, which also includes amplification circuit. These can be found in high school physics textbooks. Baidu can find this principle circuit diagram, a look at it. The air switch is used to prevent short circuit or overload. As long as the line is short or overloaded, it will trip and leak and will not trip. The electric leakage protector will trip when it is leaking. It does not trip when overloaded or shorted. The two are just the opposite. Air switch: The air switch is a split switch for controlling the electrical circuit. If the air is the arc extinguishing medium, it is called an air switch. Generally to the rated current (load) choice, as the electrical circuit of the main switch used. Leakage protector: When an air switch has an electric leakage protection function, it is called an earth leakage protective switch. If it is an electrical device solely for leakage protection, it is called a leakage protector. The principle of determining whether or not to leak is based on the fact that the current flowing into and out of the switch must be equal, otherwise it will be judged as leakage. When the leakage current reaches and exceeds a certain degree, a protective action is generated ---- tripping. The threshold of the decision is set, because the circuit is what we design. Just apply different protectors according to different occasions. If it is intended for personal