A 12V DC relay is an essential component in electrical circuits that control a high-power load with a low-power signal. It works as a switch operated by an electric current. Relays are fundamental in various applications ranging from industrial machinery to consumer electronics, ensuring efficient operation and protecting sensitive parts from damage. This article will explore the function, working mechanism, applications, and advantages of 12V DC relays.

What is a 12V DC Relay? A 12V DC relay is an electromagnetic switch that operates on a 12-volt direct current (DC) input. It consists of an electromagnet, a set of contacts, and a spring. When a current flows through the coil of the electromagnet, it creates a magnetic field, pulling the armature and causing the switch to change states, either opening or closing the contacts. The actuation of the relay allows a small control current to switch a larger load current without the need for manual intervention. How Does a 12V DC Relay Work? The working principle of a 12V DC relay involves a few key components: