Use this monitoring relay from RS PRO to trip a circuit breaker in the event of undervoltage or overvoltage. You can adjust the minimum and maximum levels within a range of 50 to 500 V, making it easy to protect a range of equipment from damage.
To prevent momentary dips in voltage from tripping the circuit breaker, you can add a time delay of between 0.1 and 30 seconds. For ease of use, the relay has a green LED light that clearly indicates the supply status.

• SPDT (Single Pole Double Throw) contact configuration
• Dimensions of 66.5 (length) x 17.5 (width) x 89 mm (height)
• One phase
• Frequency sensing range of 48 to 63 Hz
• Operating temperature range of -20°C to +60°C
• Voltage sensing range of 50 to 500 V
• Voltage monitoring application
• DIN rail mounting type
• One pole
• Meets CE, EMC (electromagnetic compatibility), EN 61000-6 standards
• Supply voltage of 24 to 230 V AC/DC
• Screw terminal type
• Time delay of 0.1 to 30 s
• Overvoltage and undervoltage sensitivity