Simple Wiring: When wiring, the input terminal is connected to 3 phase 380V, and the output terminal is connected to a 3 phase fan. Aluminum Alloy Material: The aluminum alloy casing of the governor provides it with good oxidation resistance and wear resistance, which improves the service life of the governor. Adjustable: The output of the governor can be adjusted manually, and the user can adjust it according to his own work needs, just turn the knob to adjust. Safety: This governor is made of high quality circuit boards, which are not easy to be damaged, and will not cause circuit safety hazards. You can use it with confidence. Wide Range of Uses: The governor can be used for the speed regulation of 3 phase purification fans, central air conditioning splitters, axial fans, and ordinary fans. Item Type: Speed Controller Material: Aluminum Alloy Rated Voltage: 3 phase AC 380V Input Power: 3 phase AC 380V Output Power Supply: 3 phase speed regulation power Output Adjustment Method: Manual knob adjustment Rated Current: 6A Application Range: 3 phase 380V AC fan speed regulation Suitable Motor Power: Below 2.2KW Speed Regulation Range: 1/3 motor rated speed to full speed (intermediate stepless speed regulation). 1 x Speed Controller. Pay attention to correct operation.