Power Meter LED Display Mounting ANSI C39.1 4 in Round Cut-Out Input Voltage 20 to 721V AC Delta 21 to 416V AC Wye Amps 5 A +/-0.50 Percent Accuracy Measures Amps Frequency Power Volts Enclosure Rating NEMA 12 Hz 60 Meter Range 20 to 721V AC Delta 21 to 416V AC Wye Phase 3 Operating Temp Range -4 Degrees to 158 Degrees F Height 4.85 in Width 4.85 in Depth 4.25 in