Power RelaysPower relays are electrical devices that use a small amount of input power to control a larger amount of output power. They are commonly used in a variety of applications, such as switching circuits, controlling motors, and protecting circuits from overloads. Power relays typically consist of an electromagnet and a switch, which is controlled by the electromagnet. When a small amount of current is applied to the electromagnet, it creates a magnetic field that activates the switch, allowing a larger current to flow through the circuit. Power relays are available in many different sizes and configurations, and they can be used to control a wide range of electrical loads. Some common types of power relays include mechanical relays, solid-state relays, and reed relays.