Energy Analyser Dimensions W x H x D: 71.6 x 90 x 66.3 mm Frequency: 45...65 Hz Operating temperature: -25...+55 °C Measurement accuracy: Class 1 @ EN 62053-21 Operating voltage: 320...480 VAC Assembly type: DIN-Rail Display type: LCD Displays: 8-Digit Measurement input: Direct Operating voltage type: 1-/2-/3-phase Output: M-Bus Protection rating: IP50 (Front Panel) Accuracy, display: 1 % Character height: 7 mm Decimal places: 2 Rated measurement input current: 10 A