The preferred successor type is 3UG5618-1CR20 phase sequence phase failure 3x160-690 V screw digital monitoring relay for 3-phase supply voltage automatic phase sequence correction phase failure 3 x 160 to 690 V 50 to 60 Hz AC undervoltage and overvoltage 160-690 V hysteresis 1-20 V OFF delay 0-20 s asymmetry 0-20% 1 CO for phase correction 1 CO for power system faults screw terminal
The preferred successor type is 3UG5512-1BR20 phase failure and sequence 3x160-690 V analog monitoring relay phase failure and sequence 3 x 160...690 V 50...60 Hz AC 2 changeover contacts screw terminal