Frequency Converter 3‑Phase Motor Speed Control Inverter 220V Input 380V Output 4KW Item Type: Frequency Converter Model: AT4-4000X（AT904-4KW）Input Voltage: Single-phase 220VAC 50/60Hz Output Voltage: 3-phase 0-380VAC 0-400Hz Maximum Output Current: 20A Adapted Motor Power: 4KW(6HP) Filter: Built-in filter Application: General DC Power Supply Nature: Voltage type Control Method: V/F open loop Output Voltage Adjustment Method: PWM control Material: ABS plastic shell Purpose: Control the start, stop, speed adjustment and CW and CCW of the motor to meet the conditions required for production or equipment use, widely used in fans, water pumps, air compressors, etc. Size: Approx. 241 x 151 x 171mm / 9.5 x 5.9 x 6.7in