What is the role of an AC contactor? Why do you need an AC contactor?

1. In electrical engineering, because it can quickly cut off the AC and DC main circuits and can frequently connect to large current control (up to 800A) circuits, it is often used in electric motors as control objects, and can also be used as control plants For electrical loads such as equipment, electric heaters, working mothers, and various power units, Contactors can not only connect and cut off the circuit, but also have a low-voltage release protection function.

2. Connect and disconnect electrical circuits.

3. The contactor has a large control capacity and is suitable for frequent operation and remote control. It is one of the important components in the automatic control system.

4. In industrial electrics, there are many types of contactors, with working current ranging from 5A to 1000A, and their usefulness is quite extensive.

Reasons for the need of AC contactor:

1. The AC contactor is widely used as a breaking and control circuit for electric power. It uses the main contact to open and close the circuit, and the auxiliary contact to execute the control command.

The main contact generally has only a normally open contact, and the auxiliary contact often has two pairs of contacts with normally open and normally closed functions. Small contactors are often used as intermediate relays to cooperate with the main circuit.

The contacts of the AC contactor are made of silver-tungsten alloy, which has good electrical conductivity and high temperature ablation resistance.

2. Because the contactor is an automatic switcher used to connect or disconnect the AC/DC main circuit with load or the large-capacity control circuit, the main control object is the motor, and it is also used for other electrical loads, such as electric heaters. Electric welding machines, lighting equipment, and contactors can not only switch on and off the circuit, but also have a low voltage release protection function.

3. The contactor has a large control capacity and is suitable for frequent operation and remote control. It is one of the important components in the automatic control system.