Overview
The Allen-Bradley 25B-D1P4N104 is a PowerFlex 525 AC drive designed for compact, efficient motor control in industrial automation. Operating on 323–528 VAC three-phase input, it provides a 0.4 kW (0.5 HP) output rating and 1.4 A output current, making it ideal for light to medium-duty machine control. The 25B-D1P4N104 is part of the PowerFlex 525 family, offering advanced control capabilities in a compact Frame A housing for both standalone and networked applications.
Key Features
- Embedded EtherNet/IP communication and integration with Rockwell control systems
- Smooth acceleration and deceleration, dynamic braking support, and advanced stop modes like PointStop
- Safe Torque Off (STO) standard safety feature that removes rotational power without powering down the drive
- Meets ISO 13849-1 standards with safety ratings up to SIL 2/PLd
- Detachable control module and power module allow simultaneous configuration and installation
- Supports PointStop and point-to-point positioning without requiring encoder feedback
Technical Specifications
- Motor Power: 0.4 kW (0.5 HP) Normal Duty; 0.5 HP Heavy Duty
- Output Current: 1.4 A at rated load
- Input Voltage: 323–528 VAC, 3-phase, 50/60 Hz
- Output Frequency Range: 0–500 Hz (programmable)
- Control Method: V/Hz, Sensorless Vector, Closed-Loop Velocity
- Enclosure Rating: IP20 (NEMA Open Type)
- Frame Size: Frame A (compact modular design)
- Communications: EtherNet/IP, USB (plug-and-play configuration)
- Safety Features: Safe Torque Off (STO), ISO 13849-1 SIL 2/PLd certified
Typical Applications
- Small pump and motor speed control
- Conveyor systems and material handling
- Machinery automation and production equipment
- Standalone machine control or integrated automation systems
- Applications requiring compact, modular VFD with embedded networking
Compatibility & Replacements
Compatible With
- CompactLogix, ControlLogix, and SLC 500 series controllers via EtherNet/IP
- Rockwell Automation Studio 5000 (Logix Designer)
- PowerFlex 520-series ecosystem
- Standard three-phase AC induction motors rated 0.5 HP or less
- IEC or UL circuit protection devices (10–16 A IEC fusing recommended)
Replaces / Drop-In Replacement For
- Verify compatibility with legacy PowerFlex 520-series units using part number cross-reference documentation from Rockwell Automation
- Direct replacement within PowerFlex 525 0.5 HP frame class
Works With
- Studio 5000 (Logix Designer) programming software
- EtherNet/IP industrial networking protocol
- USB connection for parameter configuration and diagnostics
- Optional encoder card for closed-loop speed or position feedback
- Third-party HMI/SCADA systems supporting EtherNet/IP


















