MULTIFUNCTION PROTECTIVE RELAY SYNCHRONIZATION (OPTIONAL) AND RESISTANCE TEMPERATURE DETECTOR INTERFACE, GRAPHIC DISPLAY, CASE 1/2 19", 15BI, 13BO, 1 WATCHDOG CONTACT PHASE CURRENT TRANSFORMER 5A SUPPLY VOLTAGE:DC 110V TO 250V, AC 115V TO 230V, TRIGG.LEVEL BINARY INPUT DC 88V FLUSH MOUNTING CASE, SCREW TERMINALS LANGUAGE ENGLISH, 50/60HZ, IEC/ANSI, REGION WORLD, (LANGUAGE CHANGEABLE) SYSTEM PORT (ON REAR OF DEVICE) PORT B IEC 61850,100 MBIT ETHERNET WITH INTEGRATED SWITCH OPTICAL, DOUBLE, LC-CONNECTOR DIGSI 4/MODEM PORT (ON REAR OF DEVICE) PORT C DIGSI 4, RS485 METERING: FAULT RECORDING FUNCTIONALITY: TOC+V/F PHASE OVERCURRENT (50/51), IP,REVERSE INTERLOCKING, INDEPENDENT OF PHASE ROTATION, GROUND OVERCURRENT (50N/51N), IEP, OVERLOAD PROTECT. WITH 2 TIME CONSTANTS (49), TRIP CIRCUIT SUPERVISION (74TC) BREAKER FAILURE PROTEC. (50BF), COLD LOAD PICKUP, INRUSH BLOCKING, NEGATIVE SEQUENCE (46), LOCK OUT (86), OVER7UNDER FREQUENCY (81U/O), UNDER VOLTAGE (27-1,27-2), OVER VOLTAGE (59-1) SYNCHRONIZATION