How do we choose the right contactor? 

#Contactor# suitable for the engine#
How do we choose the right contactor?
There are many types of contactors, and they are as follows:
1- The voltage difference that the control circuit operates on
2- The number of open and closed auxiliary contacts
3- The intensity of the current in relation to the load.
As for the first point, then
There are some contactors (24-48-110-220-380) volts, and the preference is made between them according to use and according to the voltage that the control circuit operates on in the countries.
It is known that the three-phase motors can run on more than one voltage, for example 220/380 volts or 380/660 volts. Connecting it to a 3-horsepower engine, this engine must be run on 220 volts, but if the engine is 5.5 hp, for example, this motor must be run on 415 volts and so on to remain the same current that the contactor points can bear,
And this is the third point. Any contactor makes its contact points to withstand a certain current. If these points are contacted by a motor whose current is higher than these points can bear, this will lead to an increase in the spark generated as a result of connecting and cutting the current, and thus quickly destroying the points.
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#choose#contactor#suitable#