SIEMENS » 3UG4815-1AA40
DIGITAL MONITORING RELAY FOR THREE-PHASE MAINS VOLTAGE WITH IO LINK AC 50 TO 60 HZ 3X 160 TO 690V LINE PHASE SEQUENCE, PHASE FAILURE, PHASE ASYMMETRY UNDER- AND OVERVOLTAGE HYSTERESIS 1-20V NETWORK STABILITY TIME TRIGGER DELAY TIME 1 CHANGEOVER, SCREW CONNECTION ,