How to connect plug-in power switch?

The specific steps for wiring the card power switch are as follows:

1. Card switches are marked on the back, which can be roughly divided into two types, one is zero line practical. As shown in the figure.

2. There are three terminals Li, Lo and N on the back of the card power switch. Li is connected to the incoming live wire, Lo is connected to the outgoing live wire, and N is connected to the neutral wire. At the same time, another four-terminal connection method is: connect Li to the live wire first, then Ni to the zero wire, then Lo to the live wire, and finally No to the zero wire.

Extended data:

Principle of plug-in switch circuit:

1, universal plug-in switch has three parts: high and low voltage power conversion part, identification card part and output part. There are many methods of power conversion, such as switching mode, resistance-capacitance buck mode, transformer mode and so on.

2. The high and low voltage conversion part provides the identification part and output part of DC low voltage power supply by rectifying and reducing the AC voltage.

3. The identification card part checks whether the inserted card meets the preset standard.

4. The output part obtains the standard signal of the identification card part and connects the AC power supply (live wire). According to different load requirements, this part includes 30A, 40A, etc.

Baidu Encyclopedia-Plug-in power switch

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