The high precision 3-phase 4-wire energy meter is designed for measurement of single-phase AC active electricity at rated frequency 50 or 60 Hz. High quality flame retardant ABS housing, with good shock resistance, heat/cold resistance, insulativity and durability. With a 6+2 digit backlit LCD display, the meter accurately counts and displays power consumption clearly. Adopts 35mm DIN standard guide rail installation, compact size and light weight make installation easier. The wiring terminal made of pure copper with excellent conductivity and corrosion resistance can ensure high current for long time performance. Features: Housing color: transparent/white (optional) Material: Flame retardant ABS Display: LCD screen with backlight Current: 3x5(80)A Voltage: 3x220/380V Accuracy class: 1.0 Standard: IEC62053-21 Frequency: 50/60 Hz Pulse constant: 400 imp/kWh Power consumption: ≤2W Starting current: 0.004 lbs Operating temperature: -20~55 Storage temperature: -25~70 Size Item Weight: 100*76*65mm/in Item Weight: 380g / 13.40oz Package Size: 110*80*70mm/in< /p> Package weight: 400g / 14.11oz