25A-V4P8N104 | Allen-Bradley AC Drive

The 25A-V4P8N104 is an AC variable frequency drive from the PowerFlex 523 series by Allen-Bradley, designed for compact and cost-effective motor control in industrial settings. It operates on single-phase 120V AC input and delivers up to 1 horsepower (0.75 kW), making it ideal for light to medium-duty applications. This drive belongs to Frame B and uses sensorless vector control to precisely manage motor speed and torque. It features a user-friendly design and includes integrated analog and digital I/O for flexible system integration. Its NEMA open-type construction and IP20 rating make it suitable for installation within protected enclosures. The unit is part of the scalable PowerFlex family, offering reliable performance in automation environments where space and simplicity matter.

The nominal output current of the 25A-V4P8N104 is 4.8 A, which corresponds to its rated motor capacity of 0.75 kW. This output current ensures smooth operation of small industrial motors, especially in environments where precision and energy efficiency are critical. The drive continuously monitors output current to detect overload or short-circuit events and triggers protection mechanisms as needed. Current control is achieved via advanced pulse-width modulation (PWM) to optimize voltage-to-frequency ratios. This stable current output contributes to reduced energy losses and improved torque control. It's crucial to ensure that the connected motor is within the rated current range for safe and effective operation.

Yes, the 25A-V4P8N104 includes an internal dynamic brake chopper, allowing it to manage excess energy during rapid deceleration of the motor. However, it does not come with a pre-installed dynamic braking resistor. Users who need fast motor stopping or who handle high-inertia loads can install an external braking resistor for full functionality. The internal chopper is factory-integrated and provides control over braking voltage and thermal protection. This feature is especially useful in applications where safety or precision stopping is critical. Braking performance can be tuned through drive parameters depending on the motor and load characteristics.

No, the 25A-V4P8N104 does not include an internal filter for electromagnetic interference (EMI) or harmonics suppression. This means users must assess whether external filtering is required based on installation environment and compliance standards. In many general-purpose industrial applications, EMI filtering may not be necessary if the drive is mounted in a shielded cabinet. However, for installations near sensitive electronics or where regulatory compliance is strict, external line filters may be added. The absence of a filter simplifies the drive’s design and reduces cost, making it attractive for basic motor control setups. Always evaluate the system’s EMC needs before deployment.

Yes, the Allen-Bradley 25A-V4P8N104 is currently in active production and widely supported by Rockwell Automation. It remains a key offering in the PowerFlex 520-Series, designed to balance compact form with high functionality. This ensures continued availability of the product, firmware updates, and spare parts. Rockwell’s ongoing support includes integration with software platforms such as Connected Components Workbench (CCW) and Studio 5000. Its availability in global distribution channels highlights its continued relevance in modern industrial automation. Users can confidently implement this drive in new systems or for replacing existing units with minimal risk of obsolescence.