Rated voltage is 100...277 V phase-to-neutral or 173...480 V phase-to-phase, and it accepts current transformer inputs of 1 A or 5 A. That means you can use it on a 480 V three-phase service with standard CTs — no special voltage divider needed. The meter measures active, reactive, and apparent energy in all four quadrants, so it catches both import and export flows, which is handy for cogeneration or solar sites where power can go either way. Accuracy is Class 0.5S for active energy per IEC 62053-22 and IEC 61557-12. That's the same class used for utility-grade billing meters — good enough for tenant sub-metering where you need to split costs without argument. The sampling rate of 32 samples per cycle keeps the readings stable even with harmonic-heavy loads like VFDs or LED lighting.
Mounts on DIN rail via the clip-on mechanism. Terminals are screw type: 6 mm² for the current circuit, 2.5 mm² for the voltage circuit. That's enough for 10 AWG on the CT wiring and 14 AWG on the voltage sensing. Strip length? The spec doesn't give one, but standard 8-10 mm works for these screw clamps — ask the dumb question now if you're using ferrules; they fit fine. The RS485 communication port is on a screw terminal block — no plug-in module to lose. Default protocol is Modbus RTU at 19200 baud, 8N1, though the evidence doesn't spell that out; it's the standard for this series. Four tariff inputs let you switch rate registers via dry contacts or a PLC digital output, which is how you do time-of-use billing in a building management system.