3 phase AC induction motors are a type of electric motor commonly used in industrial and commercial applications. They operate using a rotating magnetic field that is generated by the interaction of three alternating currents, or phases, which are supplied to the motor from an external power source.These motors are highly reliable and efficient, with a simple design that requires minimal maintenance. They are available in a wide range of sizes and power ratings, and can be used in a variety of applications, from powering large industrial machinery to driving pumps and fans.