| AC Current Inputs (18 total) | 5 A nominal 1 A nominal 5 A/1 A/0.2 A nominal (Y terminal only) |
| AC Voltage Inputs (6 total) | 0–300 VL-N operational |
| Output Contacts | The relay supports Form A and C outputs. |
| Optoisolated Control Inputs | DC/AC control signals: 24, 48, 110, 125, 220, and 250 V |
| Communications Protocols | Modbus TCP, FTP, Telnet, SEL ASCII, SEL Fast Message, synchrophasors, DNP3, PRP, PTPv2, and IEC 61850 Edition 2.1 (optional) |
| Communications Ports | Serial Ports One front-panel and three rear-panel EIA-232 serial ports 300–57,600 bps Four-Port Ethernet Card Four 10/100BASE-T twisted-pair network ports, or Four 100BASE-FX fiber-optic network ports, or Two 10/100BASE-T twisted-pair network ports and two 100BASE-FX fiber-optic network ports Five-Port Ethernet Card Two 100/1000BASE SFP ports Three 100BASE SFP ports |
| Precise-Time Input | Demodulated IRIG-B time input and PTPv2 |
| Frequency and Phase Rotation | System frequency: 50, 60 Hz Phase rotation: ABC, ACB Frequency tracking: 5–120 Hz (requires ac voltage inputs) |
| Autosynchronizing | Control: As many as three breakers Control pulse modes: Proportional width, fixed duration, and proportional frequency |
| Power Supply | 24–48 Vdc 48–125 Vdc or 110–120 Vac 125–250 Vdc or 110–240 Vac |
| Operating Temperature | –40° to +85°C (–40° to +185°F) |