SLA-12VDC 30A 4 Pin Power Relay

A power relay, also known as an electromechanical relay or simply a relay, is an electrical switch that is controlled by an electrical signal, such as a low-voltage control signal. It is commonly used in electrical and electronic systems to control high-power circuits using a lower-power control signal. Applications of power relays can be found in a wide range of industries and systems, including industrial automation, power distribution, motor control, HVAC systems, automotive electronics, and more. They are often used to switch high currents or voltages that may be unsafe or impractical to control directly with low-power electronic components.