GGD AC low-voltage power distribution equipment for power plants, substations, industrial enterprises and other power users as AC 50Hz, rated working voltage of 380 / 660V, rated current up to 3510A of the distribution system as power, lighting and power distribution equipment power conversion, distribution and control purposes. The product is high breaking capacity, rated short time withstand current up to 50KA. Line program flexible combination of convenience, practical, novel structure and so on. Conditions of Use 1, ambient air temperature is not higher than + 40 ℃, not lower than -5 ℃. The average temperature within 24h not exceed + 35 ℃ installation within households, use of site altitude must not exceed 2000m; 2, ambient air relative humidity at the highest temperature is + 40 ℃ not more than 50% at a lower temperature allows a more large relative humidity is high; (eg at + 20 ℃ is 90 ° should take into account changes in temperature may occasionally produce condensation effects) 3, equipment installation and the vertical gradient of not more than 5 °; 4, equipment When should be installed in the absence of severe vibration and shock place, and enough to make electrical components should not be corrosion sites users have special requirements, can be resolved through consultation with my unit.