RS PRO Phase, Voltage Monitoring Relay, 3 Phase, SPDT, DIN Rail, Реле контроля

RS PRO Phase, Voltage Monitoring Relay With SPDT Contacts, 3 Phase, Overvoltage, Undervoltage

Need to protect equipment from failures caused by overvoltage and undervoltage? Try this three-phase monitoring relay from RS PRO. This component comes with microprocessor technology that's able to take measurements of phase-to-phase voltages and break the connection in the circuit if the voltage gets too high or low.


It's quick and easy to adjust the relay to suit your needs. The minimum voltage requirement can be changed to 380 V for undervoltage and 500 V for instances of overvoltage. There's also a time delay that will stop tripping when there are temporary dips in voltage.

Features and Benefits

• Single Pole Double Throw (SPDT) contact configuration


• Dimensions of 17.5 (width) x 66.5 (length) x 89 mm (height)


• Three phases


• Frequency sensing range of 48 to 63 Hz


• Operating temperature range of -20°C to +60°C


• Voltage sensing range of 300 to 380 V (undervoltage), 420 to 500 V (overvoltage)


• Phase and voltage monitoring application


• DIN rail mounting type


• One pole


• Phase failure and phase sequence sensitivity


• Special features include two LEDs for the indication of operational states, detection of incorrect phase sequence and phase loss, fixed time delay, fixed undervoltage trip level, measurement of phase-to-phase voltages, microprocessor-based relay, monitoring of own supply to detect an undervoltage condition on one or more phases, true RMS (Rotronic Monitoring System) monitoring


• Meets CE, EMC (electromagnetic compatibility) EN 61000-6, IEC standards


• Supply voltage of 400 V AC


• Screw terminal type


• Time delay of 0.2 to 10 s


• Overvoltage and undervoltage sensitivity

UL Certification

RS PRO Datasheet