Features Efficient 3 Phase Input and Output: Intelligent and efficient with 3 phase 380‑440V input, and 3 phase 0‑440V output, providing 2.2KW power and 5.1A output current for robust performance. User-Friendly RS485 Communication and Digital Display: Humanized keyboard design, digital display with RS485 communication, and built-in braking unit for enhanced control and monitoring capabilities. Enhanced Stability and Protection: All internal components designed with patch for increased stability and strong protection performance, ensuring reliable operation. Optimal Heat Dissipation: Large heat sink and small fan for low noise, ensuring efficient heat dissipation, and prolonged product lifespan. Durable ABS Plastic Construction: Made of industrial ABS plastic with high impact resistance, heat resistance, flame retardant properties, and overall durability for long-lasting performance. Specification: Item Type: Frequency Converter Material: ABS Storage Temperature: -25℃-+55℃ Input Voltage: 3 Phase 380‑440VAC Output Voltage: 3 Phase 0‑440VAC Output Current: 5.1A Braking Resistance: Braking Resistor Power: 300W Braking Resistor Resistance Value: 250Ω Package List: 1 x Frequency Converter 1 x Instruction Manual Package List 1 x Frequency Converter 1 x Instruction Manual