Many people may feel strange when they hear the name of the air switch. Why is the air switch called an open air switch? Today, SHINELONG editor will show you what an air switch is and what it does. What is an air switch? Air switch, also known as air circuit breaker. In our daily life, we often call it an air switch. It is a switch that will automatically disconnect as long as the current in the circuit exceeds the rated current, playing a protective role. In addition to being able to complete the contact and disconnection of the circuit, it can also protect the circuit or electrical equipment from short circuits, severe overloads and undervoltages. The role of the air switch: 1. Leakage protection: In fact, in the process of life, many things cannot be done without electricity. However, in the process of using electricity, dangerous accidents are inevitable, and in order to avoid this phenomenon, contemporary people have developed air switches. It is understood that the main function of the air switch is to immediately isolate the electricity when leakage occurs, thereby ensuring safety. 2. Short circuit protection: If the electrician accidentally connects the circuit incorrectly during construction, a short circuit is likely to occur. So at this time, the air switch comes into play, and it will be immediately isolated from the circuit when a short circuit occurs in the circuit. It can be seen that the air switch can also effectively protect our safety. 3. Current limiting: We all know that when a short circuit occurs in the circuit, a very high current will be produced immediately, so that the electrical appliance will burn out quickly. But as long as you install an air switch, the air switch can disconnect the electrical appliance from the electricity in the case of high current. 4. Isolation: The current that our body can contact has a safety factor. Generally speaking, the current below 30 milliamperes is safe for us and can also play a role in the circuit operation. If the current is higher than this limit factor, it will cause safety hazards to us. The role of the air switch is to isolate the unsafe current for us and disconnect its electricity. I believe that after reading what an air switch is and its role, you should have a general understanding of the concept of an air switch. The SHINELONG editor here reminds you to pay attention to safety when installing an air switch.