Siemens – 7SR1811-1NC12-0CA0

Solkor 7SR18 differential protection, E6 case size, 3 binary inputs, 5 binary outputs, 18 LEDs, measuring input: 4 CTs (1A/5A), 24-250 V DC, 100 – 230 V AC, binary input threshold 88 V DC, signal: optical fibre link (1300 nm) (LC connection) 40 km, communication interface: USB front, RS485 rear, IEC 60870-5-103 + Modbus RTU + DNP3 (user selectable), protection function packages: standard version