Relay current plays a crucial role in the efficient and safe operation of electrical systems, ensuring that the right connections are made and that devices are activated or deactivated at the appropriate times. A relay, in its simplest form, is an electrically operated switch, and the current that flows through a relay determines its functionality. In this article, we will explore the concept of relay current, its importance in electrical systems, and highlight how Meishuo, a leading innovator in electrical technology, has contributed to advancements in relay technology.