Contactors are essential devices used in electrical systems to control the flow of electricity. They are commonly found in industrial and commercial settings where heavy machinery and equipment require reliable and efficient power management. Contactors are designed to handle high voltage and current levels, making them ideal for controlling electric motors, lighting systems, and heating/cooling systems. These devices are typically operated by an electromagnet, which allows for remote control and automation. The main function of contactors is to establish and interrupt electrical circuits, ensuring the smooth operation and protection of electrical systems.