In contactor, it has dc and ac.Below small make up to tell you the difference between them.
Normally, the core of the ac contactor is superimposed with silicon steel sheets that can be insulated.
Arc extinguishing system:
Generally, the ac contactor can use a system called delete arc extinction.
Generally, the current entering the coil is their own current, so the number of turns of the coil of the ac contactor is ac.
The three points mentioned above are among them, and there are very big differences between them.Understand clear words, can use real object to compare see oh!