Feature: 1. COPPER CORE COIL: Built in sufficient excellent copper core coils, the variable frequency drive has strong resistance, high load capacity and superior performance. 2. MULTIPLE CONTROLS: The frequency inverter supports V F control, vector and output torsion control, with RS485 communication interface. 3. LED PANEL: LED digital display panel is configured externally, which is convenient for observation and operation of this frequency inverter. 4. STRONG FUNCTIONS: Built in multiple protections, the frequency converter is safe and secure to use, with compact size, large torsion and strong functions. 5. WIDE APPLICATIONS: This inverter is applicable to wind generator, water pump, automatic machine tool, carving machine etc. Specification: Item Type: Frequency Inverter Material: ABS Power: 4KW Input: 3PH 380V 50/60Hz Output: 3PH 0-380V 0-400Hz Current: 5.1A. Package List: 1 x Frequency Inverter1 x Instructions Note: Pay attention to electricity safety.