Miniature circuit breaker air switch wiring diagram

When the new house is renovated, the general decorator will suggest that the owner install a small circuit breaker (that is, an air switch), in order to protect the electrical safety of the home. This is because when the home circuit breaks down, the circuit breaker can automatically trip and cut off the power, thereby reducing accident losses. But do you know how the circuit breaker is wired? Could it be that the left is zero and the right is fire? Let's talk about the wiring diagram in detail below.

In order to thoroughly understand the wiring of the circuit breaker, it is necessary to understand some knowledge about the circuit breaker. In real life, we often hear 1P, 2P, 3P, 4P, and 1P+N circuit breakers. What do these mean? Among them, "P" refers to the number of poles of the circuit breaker, and the number in front of P indicates the number of lines that this circuit breaker can control.

That is to say, the 1P circuit breaker can only control the on and off of one wire. Once the circuit fails, the circuit breaker can only disconnect one live wire. The 2P can disconnect the neutral and live wires at the same time. The 3P refers to the ability to control the disconnection of 3 wires at the same time. This is usually used in 380V three-phase motors. So, what does 1P+N mean? This is also easy to understand, N represents the neutral line, so when the circuit is short-circuited, 1P can only control the on and off of one line, 2P can disconnect the live and neutral lines at the same time, while 1P+N cannot be disconnected .

So how to wire the circuit breaker? Here is an explanation with 1P and 2P circuit breakers. When the circuit breaker faces itself, the top two binding posts generally indicate the incoming terminal, while the bottom two binding posts indicate the outgoing terminal. But because this is a 2P circuit breaker, it can control the on and off of the two lines. The one marked with "N" on one side of the terminal means that this terminal is connected to the neutral wire, and the other is connected to the live wire.

For the 1P circuit breaker, only one live wire from the 2P circuit breaker needs to be connected, but for the 2P circuit breaker, one live wire and one neutral wire must be connected. If there is a mark on the miniature circuit breaker, it is usually connected according to the left fire and the right zero, which is just the opposite of the socket. The standard connection method of the socket is basically the left zero and the right fire.