SIEMENS » 3UG4614-1BR28-0AA3
DIGITAL MONITORING RELAY UNBALANCE 0-20%, DEFAULT OFF PHASE SEQUENCE, DEFAULT OFF PHASE FAILURE 3X 160 TO 690V AC 50 TO 60 HZ UNDERVOLTAGE, DEFAULT 320V HYSTERESIS, DEFAULT 5% ON AND OFF DELAY , DEF. 0.1S 2 CHANGEOVER CONTACTS SCREW TERMINAL ,