Introduction

An Electromechanical Relay (EMR) is a fundamental electrical device used to control circuits by opening or closing their contacts in response to an electrical signal. This relay operates on the principle of electromagnetism and is widely used in various electrical and electronic applications due to its reliability and versatility. Electromechanical relays have been crucial in both industrial automation and consumer electronics, providing a simple yet effective means of controlling electrical circuits. This article delves into the working principles, types, applications, advantages, and limitations of electromechanical relays.