What type of components do electromagnetic controls primarily use?

Electromagnetic controls primarily use physical mechanical components. These devices operate through electromagnetic fields generated by coils to create movement or control mechanisms in machinery and equipment. When an electric current flows through the coil, it creates a magnetic field that can exert force on a nearby metallic component, typically a solenoid or relay, resulting in physical movement or actuation.

This principle is foundational in applications such as relays, contactors, and solenoids, where the physical response to the electromagnetic force enables control of larger electrical loads or mechanical systems. The reliance on tangible components that interact through magnetic forces is what distinguishes electromagnetic controls from other technologies that may utilize more abstract or digital means.