Relays are integral components in many electrical systems, playing a crucial role in controlling circuits without the need for a manual switch. One of the most important aspects to consider when selecting a relay for a specific application is the relay voltage rating. The voltage rating determines the maximum voltage a relay can handle safely, which ensures its reliability and longevity in various electrical setups.

    A relay essentially functions as an electromechanical switch, where an electrical signal is used to activate or deactivate a circuit. The voltage rating of a relay is the maximum voltage that can be applied to either the coil (control side) or the contacts (switching side) without causing damage or malfunction. It is essential to ensure that the relay's voltage rating matches the application requirements to avoid potential hazards, such as overheating, arcing, or even complete failure of the device.