A General-purpose relay is a fundamental component in electrical and automation systems. It serves as an electromechanical switch, enabling low-power electrical signals to control larger loads or higher power circuits. This article explores the general-purpose relay, its components, working principle, advantages, and various applications.

What is a General-purpose Relay? A general-purpose relay is a type of electromagnetic switch that allows a low-power control signal to control the opening or closing of an electrical circuit. These relays are designed to handle a wide range of applications and are often used in industrial automation, home appliances, automotive systems, and many other areas requiring reliable switching and control. The relay operates based on the principle of electromagnetic induction. When an electric current passes through a coil (electromagnetic field), it creates a magnetic field that pulls a movable contact, causing the switch to either open or close, depending on the configuration. This allows for the control of higher power circuits using low-power inputs.