Magnetic contactors (MCs) are mainly located in the end
of the power distribution system, meaning the nearest
position of the electrical load. MCs are composed of a
magnetic component, a contact point, and some frames to
hold them as shown in Fig. 1. The magnetic contactor
switches the load by opening and closing the contact point
by exciting and degaussing the magnetic coil. The voltage
and current capacity of the magnetic switches for
alternating current range from 220V-11A to 690V-5A and
also from 220V-800A to 690V-630A, respectively. In the
field operation, the magnetic switches are generally used
below 690 V-800 A.