How to draw and distinguish 1p circuit breaker with leakage protection, 1p circuit breaker without leakage protection, 2p circuit breaker with leakage protection and 2p circuit breaker without leakage

How to draw and distinguish 1p circuit breaker with leakage protection, 1p circuit breaker without leakage protection, 2p circuit breaker with leakage protection and 2p circuit breaker without leakage protection in electrical principle? The last picture is easier to explain.

The above picture shows that 2P 1P has no leakage.

In the red circle is the circuit breaker sign. It shows that the circuit breaker has instantaneous and delay protection tripping (breaking) function.

The circuit breaker has a high tripping (breaking) ability of 4000A, and is suitable for lines below 400 and 50HZ.

Let's talk about the leakage circuit breaker first.

The above picture shows 1P+N leakage circuit breaker.

It can be seen that only one pole of this leakage circuit breaker has instantaneous and delayed tripping (breaking) function, and the other pole only has on-off function.

The red circle is a sign with leakage protection function.

This leakage circuit breaker protection has a high tripping (breaking) ability of 4500A, and is suitable for lines below 230 and 50HZ.

The rated leakage current is less than 0.03A, and the action (breaking) time is less than 0. 1 sec.

The difference between 2P earth leakage circuit breaker and 1P+N is that the N pole also has the functions of high opening and quick opening, and delay protection tripping (breaking).

Because there is no 2P leakage circuit breaker at hand.