7SA6121-4MB21-1PR4 SIEMENS ⍾ 7SA61214MB211PR4

DISTANCE PROTECTION RELAY 7SA61 OPERATOR PANEL WITH: 4-LINE BACK-LIT DISPLAY, FUNCTION KEYS,NUMERICAL KEYS, PC-INTERFACE, EARTH-FAULT PROT. DIRECTIONAL, EARTHED NETWORKS MEASURING INPUT (4 X V, 4 X I) IPH = 1A, IE = 1A (MIN = 0.05A) AUXILIARY VOLTAGE: 60 TO 125V DC, BINARY INPUT THRESHOLD 19V HOUSING WIDTH 1/1 19", 14 LEDS 21 BINARY/INDICATION INPUTS, 12 SIGNAL/COMMAND OUTPUTS, 8 FAST RELAYS, 5 HIGH-SPEED TRIP OUTPUTS, FLUSH MOUNTING HOUSING/ SCREW TERMINALS REGION WORLD, LANGUAGE ENGLISH (SELECTABLE) PORT B: SYSTEM PORT, IEC PROTOCOL, ELECTRIC RS485 PORT C: DIGSI/MODEM, ELELCTRIC RS232, TRIPPING 3-POLE, BCD OUTPUT FAULT LOCATION, DISTANCE PROTECTION STARTING: Z/PHI, POWER SWING DETECTION, PARALLEL LINE COMPENSATION, AUTO-RECLOSURE, SYNCHRO-CHECK, BREAKER-FAILURE PROTECTION, VOLTAGE PROTECTION V>/V