An AC contactor is an electrical switching device that can switch an electrical circuit on and off.
Economizer circuits are employed to reduce the amount of power used by the contactor coil during operation.
AC Contactors are used mostly in applications where high current carrying capacity is required.
AC contactors have shading coils that delay demagnetization of the magnetic core to avoid chattering.
They are available in multiple contact configurations, current/voltage ratings, auxiliary contact configurations, and mounting styles.