Motor monitoring relays with user-adustable settings

摘要

AutomationDirect proSense PMRU phase monitoring relays have microprocessor-based design to protect against phase loss, reversal, unbalance, undervoltage and overvoltage conditions. With a variety of user-adjustable settings, PMRU relays also feature a multi-color LED to indicate normal and fault conditions. The PMRR series provides protection against phase reversal, while the PMRRL series, with an adjustable undervoltage setting knob, protects against phase loss, reversal and undervoltage. AR series alternating relays feature a three-position selector switch to alternate two loads as normal, or lock the relay to one load or the other.