Phase Over Voltage Phase Over Current

70POCR - Three Phase  AC Current Monitoring Relay
45POVR - Three Phase Voltage Monitoring Relay
45POVR-4W- Three Phase Voltage Monitoring Relay - 4 Wire

The output relay remains de-energised when all phases are present and the monitored input from each phase is below the trip levle set on the unit. The realy will energise if the monitored input on one or more phases exceeds the trip level.