A general-purpose relay is an essential component in the realm of electrical and electronic systems. It is designed to switch electrical circuits on and off, providing a versatile solution for a wide array of applications. Whether in industrial machinery, home appliances, automotive systems, or automation technology, these relays offer crucial functionality by controlling high-voltage circuits with low-voltage signals. In this article, we will explore the working principles, applications, and significance of general-purpose relays in modern systems.

What is a General-purpose Relay? A general-purpose relay is an electromechanical switch that uses an electromagnet to mechanically operate a set of contacts. When an electrical current passes through the coil of the relay, it generates a magnetic field that pulls the contacts together or separates them, depending on the relay’s design. This action allows the relay to control high-power circuits with a small control signal, making it a key component in controlling and switching electrical systems efficiently. Relays are designed to handle different voltages and currents, and they come in various forms, including electromagnetic and solid-state types. The general-purpose relay is typically an electromagnetic type, and it is characterized by its flexibility and wide application in many fields.