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How to connect the normally open and normally closed AC contactor?

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For electricians, AC contactor is the most common electrical components, is the most common AC contactor, can be said to be ubiquitous. How to properly and skillfully apply the normally closed point of AC contactor is a difficult problem that every beginner must think about. It is very important for us to understand the circuit diagram, analyze the circuit diagram and use the circuit diagram.

If we describe learning power circuit as learning to drive, then self-locking and self-locking interlock are just like learning to shift gears and shift gears. The most important thing is basic.

There are six main contacts in AC contactor, 1, 3 and 5 are input terminals (input holes), 2, 4 and 6 are output terminals (Group outlet holes). The rated voltage of main contact of this AC contactor is 12 A, A1 and A2 are two wiring points of electromagnetic coil of AC contactor, which are slightly below the main contact of AC contactor. A2 has two contacts, we can connect any one at will in the case of application, it is China Unicom inside.! The connection of electromagnetic coil can't distinguish zero fire.

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