What is the use of ac starter switch?

 Electric motors that are started and stopped by a button or switch are known as AC starters switch. The low-voltage circuit that regulates the power to the AC motor starter can also use safety switches. On large motors when the electrical power needs are so high that it would be dangerous to run a single switch to turn the motor on, AC motor starters are also employed. The electric motor can be operated remotely or automatically even if the motor starter is situated far from the motor. The pull-in coil, electrical contacts, and overcurrent protection are the three primary parts of an AC motor starter. 

How Do AC Motor Starters Work? 
 

Every power switch has an electrically coiled coil that is made up of several insulated wire strands. A thin varnish coating serves as an insulator between these wires. The varnish prevents the individual wires that make up the pull-in coil from being damaged by electrical shorts. In order to allow a metal plunger to be dragged "in" or "out" as electrical power is provided to the coil, the coil is twisted around a plastic shape.  

The plastic shape can only just accommodate the metal plunger within. The plunger is electrically engaged when power is applied to the coil. The plunger disengages when the coil's power is turned off. The electrical connections meet one another during the engagement of the coil and plunger. 

AC Starters switch provides overload protection 

An overcurrent protection mechanism is typically present in all power switches. This device keeps track of how much power the motor is using overall while it is running. The overcurrent protection, which is often a bi-metallic strip that will bend when overheated, will cut off power to the coil and turn off the AC motor starter. Without the overcurrent protection, a damaged motor might cause the AC starter switch to run nonstop and wreck the machinery it is running.