The 7SJ6211-5EB02-1FG0/FF,,F: The 7SJ6211-5EB02-1FG0/FF,F is a Siemens SIPROTEC 4 7SJ62 multifunction protection relay — a 19" rack-mount unit with a 4-line text display, three voltage and four current measurement inputs, eight binary inputs, eight binary outputs, and one live status contact. It is configured for panel flush mounting using screw-type terminals for direct connection or ring-type cable lugs. Rated auxiliary voltage covers DC 110 to 250 V and AC 115 to 230 V, with a binary input threshold of DC 88 V. The relay ships with worldwide default settings (50/60 Hz, IEC/ANSI) and English-language firmware, selectable via DIGSI 4.
The 8 BI / 8 BO count defines the I/O budget for feeder protection schemes. The 3 voltage and 4 current inputs support standard three-phase plus residual current measurement, with phase current rated 1 A and earth current 1 A (minimum 0.05 A). The 4-line display is enough for local metering and event logs without an external HMI. The service interface (Port C) is electrical RS485 for DIGSI 4, modem, or RTD-box connection. No system interface (Port B) is fitted, so this variant communicates only via the serial service port — no Profibus or Ethernet on board. The fault recording option is included. The auxiliary voltage range (DC 110-250 V / AC 115-230 V) is the standard wide-range supply for substation control voltages; the DC 88 V binary input threshold ensures reliable pickup on a nominal 110 VDC battery system with typical voltage drop.