MULTIFUNCTION PROTECTIVE RELAY WITH BACKLIT TEXT DISPLAY, 4 X 20 CHARACTERS, 7 PROGRAMMABLE LED, CASE 1/3 19", 11BI, 6BO, 1 WATCHDOG CONTACT PHASE CURRENT TRANSFORMER 1A SUPPLY VOLTAGE: DC 24V TO 48V, TRIGG.LEVEL BINARY INPUT DC 19V FLUSH MOUNTING CASE, SCREW TERMINALS (DIRECT WIRING/RING LUGS) LANGUAGE ENGLISH, 50/60HZ, IEC/ANSI, REGION WORLD, (LANGUAGE CHANGEABLE) SYSTEM PORT (ON REAR OF DEVICE) PORT B IEC PROTOCOL, 820NM FIBER, ST-PLUG DIGSI 4/MODEM PORT (ON REAR OF DEVICE) PORT C DIGSI 4, 820NM FIBER, ST-PLUG METERING: FAULT RECORDING FUNCTIONALITY: TOC+V/F PHASE OVERCURRENT (50/51): I>,I>>,IP,REVERSE INTERLOCKING, INDEPENDENT OF PHASE ROTATION, GROUND OVERCURRENT (50N/51N): IE>,IE>>,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), OVER/UNDER FREQUENCY (81U/O), UNDER VOLTAGE (27-1,27-2), OVER VOLTAGE (59-1) WITHOUT AUTO-RECLOSURE