Industrial QX3 25P0 KBX-A General Purpose Inverter

The SIEI QUIX Drive QX3 25P0 KBX-A is a general purpose AC inverter (VFD) designed for variable speed control of three-phase AC motors in industrial automation. It accepts 400–460 VAC input and provides PWM Sinusoidal Vector Control with an output range up to 0–400 Hz, delivering 5 HP (3.7 kW) to conveyors, pumps, fans, compressors, and other manufacturing machinery to improve energy efficiency and process control. The QX3 series supports open-loop and closed-loop motor control and is commonly mounted in control cabinets or packaging, material handling, machine tools, and process automation lines where precise speed regulation matters. It offers RS-485 Modbus RTU communication and optional CANopen, DeviceNet, and Profibus networks, with 8 digital inputs, 4 outputs (2 transistor, 2 relay), 3 differential analog inputs, and 2 analog outputs. Protection is IP20 and the unit is panel-mount; features include PID control, Flying Restart, Auto Restart, Energy Saving Function, and motor thermal protection, with up to 150% programmable overload. Status is Obsolete / Legacy Drive, typically available through surplus suppliers; common replacements include Gefran ADV200-4-5.5K and Allen-Bradley 22B-D010N104.