3UG4618-2CR20 SiemensDigital monitoring relay for 3 phase voltage with N conductor Autom. phase sequence correction Phase failure 3 x 90 to 400 V 50 to 60 Hz AC Undervoltage and overvoltage 90 400 V Hysteresis 1 20 V OFF delay 0 20 s Asymmetry 0 20% 1 CO for phase correction 1 CO for line supply faults Spring type connection system
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