In today's modern world, electrical systems are increasingly complex and widespread, with applications ranging from industrial automation to medical devices. As the demand for more sophisticated and reliable electrical circuits grows, ensuring the safety and protection of both personnel and equipment has become paramount. One of the critical devices that play an essential role in achieving this level of safety is the Safety Isolated Relay. This device is designed to provide electrical isolation between different circuits, helping prevent electrical faults from spreading across systems and ensuring safe operation. In this article, we will explore the importance of Safety Isolated Relays, how they function, and their key applications.