Voltage sensing relays are devices that are designed to detect a change in voltage and activate a relay switch in response. They are commonly used to protect equipment from voltage fluctuations or power outages.

Voltage sensing relays typically consist of a voltage sensor, a microcontroller, and a relay. The voltage sensor measures the voltage level of the power supply or equipment being monitored and sends the data to the microcontroller. The microcontroller then compares the voltage level to a predetermined set point and activates the relay if the voltage falls below or rises above the set point.

The relay can be used to trigger an alarm, shutdown equipment, or switch to a backup power source, among other things. For example, a voltage sensing relay can be used to protect sensitive electronic equipment, such as computers or servers, from power surges or outages by switching to a backup power source or shutting down the equipment when the voltage levels are outside of the acceptable range.

Voltage sensing relays are commonly used in a variety of applications, such as in industrial and manufacturing settings, power distribution systems, and telecommunications equipment. They can help prevent equipment damage or failure due to voltage fluctuations and provide an early warning of potential problems before they become critical.

RS offer a range of voltage sensing relays from leading brands such as ABB, Broyce Control, Carlo Gavazzi, Crouzet, Eaton and Finder. We are sure you will find exactly what you require.