The Allen Bradley 25B-D4P0N104 is a frequency converter made by Rockwell Automation. It is a member of the PowerFlex 525 series, which is designed for high-performance motor control applications. The frequency converter is used to control the speed and torque of an AC motor by varying the frequency and voltage of the electrical power supplied to the motor.

The 25B-D4P0N104 model specifically refers to a 4 Amps, 480 Volts AC input, 480 Volts AC output frequency converter. It supports different control modes such as V/Hz, sensorless vector, and closed-loop vector control. It also offers a variety of features including built-in Ethernet, USB programming, and monitoring capabilities.

The 25B-D4P0N104 frequency converter is known for its compact size, easy installation, and user-friendly programming interface. It is commonly used in various industrial applications where precise motor control is required, such as conveyors, pumps, fans, and compressors.