Time Mark 20AA-M

Universal 3 Phase Monitor

3PH,190-480V, N.O.,(98091904)

A microcontroller-based universal 3-phase monitor for protecting 3-phase motors from abnormal power conditions. It can detect under voltage, over voltage, voltage unbalance, reverse phase, and single-phasing even when regenerated voltage is present. The Adjustable trip and restart delays are included to prevent nuisance tripping during power fluctuations and short cycling in compressor applications. The LED status indicators and adjustment pots for Voltage Adjustment, Percent Unbalance, Restart Delay and Trip Delay are mounted on the front of the unit for easy access. Contacts are 2 normally open (N.O.) and isolated. Automatic or manual restart versions are available. Can be used on Wye or Delta systems and does not require a neutral connection. All versions are UL Recognized (U.S. and Canada) and are available with optional gold flashed silver contacts for low current applications.