The contactor is an electrical device used for switching an electrical circuit. Contactors are generally applicable to heavy electrical load for motors, pumps, lighting, and heating equipment. They are controlled by circuits with low power level than the switched circuit. There are different types of contractors depending on varying features and capacities. The components of contactors include contact, springs, and electromagnets. Contactors are different from relays as they are used for high load electrical devices whereas relays are used for low load electrical devices. It is used in a wide range of industries which includes automotive, power, oil & gas, construction, and mining among other industries.