In the home circuit, where is the air switch, where is the leakage protector, and where is the fuse?

In the home circuit, where is the air switch, where is the leakage protector, and where is the fuse?

In the home circuit, the air switch is usually fixed on the wall near the back of the door. In fact, it is not very important where it is installed. As long as it is beautiful and easy to operate, the leakage protector is integrated with the air switch, It's not like the separate installation before. Now the fuse has been withdrawn. Generally, it's not installed. That's because if there is a problem with the circuit, the air switch with leakage can be competent

What is the role of air switch and leakage protector in the circuit

Air switch in the circuit, 1, plays the role of connecting and cutting off the circuit, (that is, the role of load switch and disconnector), 2, plays the role of overload protection, when the load exceeds the set capacity, it can automatically trip, avoid the overload current burning lines or electrical appliances