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Allen-Bradley PowerFlex 525 AC Drives

Bulletin 25B compact AC drives with built-in EtherNet/IP, hardwired Safe Torque Off and flexible motor control. This first selection covers filtered 380–480 V three-phase, IP20/open-type drives from 0.75 to 22 kW normal duty.

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Match the motor, duty and installation

The motor-power label is only one part of drive selection. Keep the load’s duty, nameplate current, supply and cabinet conditions in the same decision.

  1. 01

    Normal Duty is not always Heavy Duty

    D030 is rated 15 kW ND / 11 kW HD; D037 is 18.5 / 15 kW; D043 is 22 / 18.5 kW. The smaller selected drives have equal listed ND/HD motor-power ratings.

    • Match the motor nameplate current as well as kW or HP.
    • Allow for the actual overload duty, temperature and carrier frequency.
  2. 02

    480 V class with an integrated EMC filter

    All first-batch models use a 380–480 V three-phase supply, IP20/open-type housing and N114 filtered configuration. N104 is unfiltered; the 18.5/22 kW 480 V entries are available only filtered.

    • The wider PowerFlex 525 family also has other voltage and input-phase classes.
    • Supply grounding affects the MOV and embedded-filter earth connection.
  3. 03

    Choose the frame and ventilation together

    Higher current increases the frame width, depth and heat load. Standard vertical IP20 installation allows full rated operation up to 50 °C; zero-side-clearance installation lowers that threshold to 45 °C.

    • Frames A–C allow DIN-rail or screw mounting; D–E use screws.
    • Operation above the no-derating temperature reduces available current.
    • The high-temperature control-module fan kit is a separate option.
  4. 04

    Built-in Ethernet and STO, optional topology and braking parts

    One EtherNet/IP port and two-channel hardwired STO are standard. Dual-port/DLR communication uses an option card; dynamic braking uses a separately selected resistor with the included brake IGBT.

    • Do not treat embedded STO as electrical isolation.
    • PowerFlex 523/527, communication cards, resistors and packaged systems are not products in this collection.