| AC Current Inputs (18 total) | 15 inputs with 5 A or 1 A ordering options 3 inputs with 0.2 A, 1 A, or 5 A ordering options |
| AC Voltage Inputs (6 total) | 300 Vac continuous, 600 Vac for 10 seconds |
| 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 |
| Serial | 1 front-panel and 3 rear-panel EIA-232 serial ports 300–57,600 bps |
| Ethernet | Communications protocols include Modbus TCP, FTP, Telnet, synchrophasors, DNP3 LAN/WAN, PRP, PTPv2, and IEC 61850 Edition 2 (optional). For PTPv2 implementation, Ports 5A and 5B must be used for engineering access and SCADA. Choose from the following port options:
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| 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 four 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) Note: LCD contrast is impaired for temperatures below –20°C (–4°F) and above +70°C (+158°F). |