Feature 1Simple Wiring: When wiring, the input terminal is connected to 3 phase 380V, and the output terminal is connected to a 3 phase fan. If the fan is reversed, please exchange the 2 wires at the output terminal. 2Aluminum 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. 3Adjustable: 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. 4Safety: 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. 5Wide 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 ControllerMaterial: Aluminum AlloyRated Voltage: 3 phase AC 380VInput Power: 3 phase AC 380VOutput Power Supply: 3 phase speed regulation powerOutput Adjustment Method: Manual knob adjustmentRated Current: 6AApplication Range: 3 phase 380V AC fan speed regulationSuitable Motor Power: Below 2.2KWSpeed Regulation Range: 1/3 motor rated speed to full speed (intermediate stepless speed regulation) .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Speed ControllerNotePay attention to correct operation