In the realm of electrical engineering and automation, the general-purpose relay stands as a fundamental component utilized in various applications. This electrical device acts as a switch that can control a high-power circuit with a low-power signal, providing a safe and efficient means of managing electrical devices. Its functionality and versatility have made it an indispensable tool in both industrial and consumer markets.
What is a General-Purpose Relay? A general-purpose relay is essentially an electromagnetic switch. It consists of several key components including an electromagnet (the coil), an armature, springs, and contact points. When a small voltage is applied to the coil, it creates a magnetic field that attracts the armature, causing the contacts to either open or close the circuit. This simple yet effective mechanism allows operators to control a wide variety of electrical circuits from a single control point. Types of General-Purpose Relays General-purpose relays come in different types, each designed to cater to specific applications. The most common types include：