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Basic knowledge of AC contactor that you should understand

Promulgator : TAIXIDate : 2017-04-06Views : 106

What is normally open normally closed contact?

Normally open NO - in the absence of contact, the contact is open;

Normally closed NC - in the absence of contact, the contact is closed;

When working, the normally closed contact is disconnected first, and the normally open contact is closed again. When the contactor coil is cut off, the normally open contact is disconnected, and the normally closed contact is closed.

Normally open contact is in the absence of power in the case of two contacts between the open circuit (that is, not through), usually closed on the contrary.

 

What is the coil voltage?

Coil voltage is defined as the control voltage of CJX1 AC contactor, which is the voltage of the control coil. It is usually marked on the two connection points of A1 and A2. The common voltage: 24V 36V 48V 110V 220V 380V.

 

What is the auxiliary contact?

The auxiliary contact is contactor above all have, the auxiliary contact is also composed of static contacts, auxiliary contacts are generally used to control the current through two times, or for other aspects of the auxiliary contact main contact with the main difference is that the auxiliary contacts should be small, auxiliary contacts are generally used for cross linkage control circuit of AC contactor it is current, the current two times. Auxiliary contacts are normally open and normally closed.


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