What is a contactor coil used for?

A contactor coil is essential in electrical systems as it serves to control the flow of electricity to heavy loads, such as heating elements. When voltage is applied to the coil, it energizes a magnetic field that causes the contactor to close its contacts, effectively allowing current to flow to the heating elements. This process enables the heating elements to operate, providing the necessary heat for applications like ovens.

This functionality is critical in applications where high currents are required, allowing the control circuitry to safely energize high power devices without directly handling that high voltage or current. The coil itself only requires a small amount of current to operate, making it very efficient for controlling larger loads.