Relay Switches / Ice Cube Relay
In industrial automation and electrical control systems, relay switches are fundamental components used to control high-power circuits with low-power signals. By enabling remote control, automated operations, and electrical isolation, relays play a vital role in ensuring the safety, reliability, and functionality of modern control systems.
The basic working principle of a relay is straightforward: when the control coil is energized, it generates a magnetic field that activates an internal mechanism, causing the contacts to open or close. This allows the control circuit to switch the state of the power circuit without direct contact with high voltage or current, improving both operational safety and system stability.
Relays come in various types to meet different application needs, including electromagnetic relays, solid-state relays (SSR), timer relays, and intermediate relays. Common applications include motor control, lighting systems, automated process control, and overload protection.
Additionally, relays can be configured with different contact types—such as normally open (NO), normally closed (NC), or changeover (SPDT)—and can support multiple output contacts, providing flexible integration in complex control setups.
The video below explains the working principles, application scenarios, and selection tips for relay switches. Feel free to watch and gain a deeper understanding of this indispensable component in industrial control.