Item Type: Variable Frequency Drive Material: PC, Aluminum Adapter Motor: 4KW 5.5HP Input: AC3PH 380V15% 10A 47Hz-63Hz Output: AC3PH 0V-380V 9A 0Hz-400Hz Protection Class: IP20 Installation Height: Up to 1000 meters(3280 feet) above sea level, if the installation height is higher than this value, the current should be reduced by 1.2% for every 10 meters (328 feet) of height Operating Ambient Temperature: 0~40 (32~104) Storage Temperature: -20~55 (-4~131) Air Humidity: 5%~85% during operation, no condensation or freezing; 5%~95% during storage Package List 1 x Variable Frequency Drive 1 x User Manual Pay attention to electricity safety when installing and using. 1STRONG RESISTANCE AND LOAD: Enough excellent copper core coil, possess strong resistance, superior performance, strong load capacity 2CONVENIENT AND FAST: Portable installation, one key installation of rail type, more convenient to use 3MULTIPLE FUNCTIONS: Support V F control, vector control and output torsion control, built in RS 485 communication interface 4EASY TO CONTROL: Come with speed potentiometer and external panel, built in synchronous control and proportional synchronous control 5MULTIPLE MODES WITH HEAT DISSIPATION: 6 speed control modes, can run automatically; strong cooling fan design, built in aluminum block to assist heat dissipation 6WIDE APPLICATION: Suitable for fans, pumps, automatic machine tools, engraving machines, etc., possess small size, large torsion, strong function