Allen-25B-D1P4N114 Bradley's variable frequency AC drive is a member of the PowerFlex 525 adjustable frequency AC drive product line. This drive is utilized to implement motor control, including both fundamental and sophisticated functionality, and may also be utilized as an energy-saving device. As an alternative to soft-starters, this electronic device's customizable features help the user by increasing operational efficiency, simplifying maintenance, and increasing control system uptime.

The 25B-D1P4N114 is a three-phase, 480VAC drive that is part of the PowerFlex 525 series. It has the smallest output capacity, generating 1.4 amperes, 0.4 kW, or 0.5 HP, and a completely adjustable frequency range of 0-500 Hz. This drive supports Zero Stacking, a space-saving technique. They operate at temperatures up to 70 °C (158 °F) and are perfect for conveyors, fans, pumps, and mixers. Additionally, it has a Safe Torque-Off feature that is PLd/SIL2 Cat 3 approved. Reduces rotational power to the motor without reducing power to the drive, allowing for a speedier start-up after a safety system demand.

This drive has an 810V DC bus overvoltage trip rating (equal to 575V AC incoming line) and a 390V DC bus undervoltage trip rating (corresponding to 275V AC incoming line). Additionally, it features a 200 percent hardware limit, a 300 percent instantaneous fault, a ground fault trip of phase-to-ground on the drive output, and a phase-to-phase short circuit trip on the drive output. This motor has a class 10 electronic overload protection that conforms with NEC article 430 and motor over-temperature safety that complies with NEC article 430.126 (A) (2). File 29572 of UL 508C. This tiny drive's next version has inbuilt EtherNet/IP networking, USB programming, and standard safety measures.