Model: MD6PU-X 2P 

>    Function: Two-phase undervoltage monitoring

>    Line voltage: 150-600V AC

>    Relay output: 2 c/o

>    Switching capacity: 8A, 250V AC

Panel caption:  

PW: power supply indication, AL: alarm indication, R: relay status indication, Line voltage benchmark: 200, 208, 220, 230, 240, 380, 400, 415, 440, 480V AC,<U: undervoltage threshold setting (2%-20%)

MD6PU-X 2P specification