A Power Relay is a crucial electrical component that plays a vital role in controlling electrical circuits. It operates on the principle of using a low-power signal to control the switching of high-power devices, making it an essential component in various industrial, commercial, and residential applications. In this article, we will explore what a Power Relay is, its working principle, types, and applications, highlighting its significance in modern electrical systems.

What is a Power Relay? A Power Relay is an electrically operated switch designed to control the flow of electrical current. It consists of an electromagnet, an armature, a set of contacts, and a spring. The relay is designed to switch electrical circuits on or off by using a small control signal, which activates the electromagnet, moving the contacts to establish or interrupt the current flow. Power relays are typically used to control devices that operate on high voltage and current but are controlled by low-voltage signals, making them essential for automation and safety in electrical systems.