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Question:

What is the scope of use of AC contactors?

What is the scope of use of AC contactors?

Answer:

And note whether the contact point is normally closed or normally open
generally in the lower part of the contactor, and each side. The other few input and output in the upper part of the general, a look to know
Know the principle, you should figure out the connection of the external power supply, that is, the coil of the two contacts
If there is self-locking control, according to the principle of the line on it. (Circuit diagram) connected to the three-phase motor This is the AC contactor control a three-phase motor typical circuit diagram, in addition, a boot button, a stop button
Also note that the voltage applied to the power supply is much (220V or 380V), are generally marked

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