1. The good price and quality AC contactor plays the role of turning on and off the power supply in the circuit, and also has the effect of under-voltage release. When the circuit pressure is 0, the control capacity is large, which is used to control the circuit, and the service life is relatively long, reducing the influence of the circuit on the entire power grid.

2. The good price and quality AC contactor is used in electric power. When the current is relatively large, it can also pass through, so it actually has an overcurrent or protection function.

3. When there is thunder, if there is lightning in the wire, the good price and quality AC contactor can automatically cut off the power supply, so as to protect the electrical appliances in the home from damage. The most direct manifestation is that there will be a tripping problem.