True RMS measurement
Select 3phase 3wire or 3phase 4wire mode by a knob.
N phase failure protection for 3phase 4 wire
LED indication for supply and output state
1 module Din-rail mounting
Three phase voltagemonitoring relay is used to protect the three-phase electric motors supplied from three-phase mains, against phase failure, incorrect phase sequence, voltage asymmetry, over and under voltage. User can select three phase three wire or three phase four wire mode as required
Morning Sun Electric Co.,Ltd
Add:No.358,Liujiang rd,,liushi town,yueqing city,zhejiang province,China