When the power of the electrical appliance is greater than 660w of the time switch, the electrical appliance can not be directly controlled by the time switch. It needs to be used with the AC connector. The simple understanding is to use the time switch to control the AC contactor and the AC contactor to control the high-power electrical appliance.

How to connect timing switch and AC contactor?

1. Connect the air switch and timing switch with 220 V mains power.

2. Connect air switch and AC contactor, and connect fire zero line of air switch to L1 and L2 of AC contactor.

3. Connect the timing switch and AC contactor, and connect the timing switch outlet to A1 and A2 of AC contactor.

4. Connect high-power electrical appliances with AC contactor, and connect T1 and T2 of AC contactor with high-power electrical appliances.

The above is the wiring steps of 220 V timing switch and 220 V AC contactor. In the selection of AC contactor, attention should be paid to 220 v. in the whole wiring process, the air switch is in the off state to ensure the safety of electricity.