Integration Notes
The 1SVR740831R0400: The CM-ESS.2P snaps onto a standard 35 mm DIN rail inside the panel. Its two-channel architecture means it can monitor a three-phase supply for phase sequence and loss on one channel while tracking overvoltage on the other — or handle two independent single-phase feeds. The relay output is a changeover contact rated for the usual control-circuit loads (pilot duty, contactor coils, PLC inputs). No special isolation transformer needed; the relay draws its own supply from the monitored voltage, so wiring is straight through the terminals.