Allen-Bradley PowerFlex 520 Parts

VFD • 9 parts available

Variable frequency drives control AC motor speed and torque. Inventory here includes PowerFlex and related drives used for pumps, conveyors, fans, and machine axes. Need repair? We offer VFD repair services.

Featured PowerFlex 520 in stock

High-value Milwaukee inventory matched to this product line.

Allen-Bradley 25A-D4P0N104

25A-D4P0N104

Used

$199.99 USD

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Search all inventory
Part NumberDescription
25A-D4P0N104Allen Bradley 25A-D4P0N104 /B PowerFlex 523 AC Drive 480V 3-Phase 25AD4P0N104 · Used · $199.99 USD
25A-D013N104AC Drive Adjustable Frequency - PWM SVC Sensorless Vector V/Hz 480V AC
25A-D017N104AC Drive Adjustable Frequency - PWM SVC Sensorless Vector V/Hz 480V AC
25A-D017N114AC Drive Adjustable Frequency - PWM SVC Sensorless Vector V/Hz 480V AC
25A-D024N104AC Drive Adjustable Frequency - PWM SVC Sensorless Vector V/Hz 480V AC
25A-D2P1N101Allen Bradley 25A-D2P1N101
25A-D2P1N102Allen Bradley 25A-D2P1N102
25A-D2P1N103Allen Bradley 25A-D2P1N103
25A-D2P1N104Allen Bradley 25A-D2P1N104

PowerFlex 520 buying & repair guidance

Use the catalog string from the nameplate when ordering or quoting. Need a hand? Contact us or request a quote.

Common PowerFlex 520 failures

  • DC bus capacitor wear leading to undervoltage or overvoltage trips
  • IGBT or power stage failure after overload or grounding faults
  • Cooling fan failure and thermal faults
  • Control board or I/O option module communication errors

Seeing these symptoms? PowerFlex VFD repair or search in-stock replacements.

Series & revision differences

Frame size, voltage class, and control options (encoder, EtherNet/IP, Safe Torque Off) must align. Catalog suffixes often encode firmware and option packages. Verify against the existing nameplate.

Confirm the full catalog and series before you buy. Condition & authenticity · Quote a specific series

Repair vs replace

Repair is cost-effective for intermittent faults and board-level failures. Replace when the drive is obsolete, horsepower needs have changed, or a plant standard requires a newer PowerFlex generation.

Start a repair quote · Request a replacement quote · Search all inventory

PowerFlex VFD repairRequest a quoteSearch all inventoryAll Allen-Bradley categories

Still have questions?

Find answers to shipping, warranties, repairs, and more.

Yes. NJT Automation maintains surplus and refurbished PowerFlex 520 inventory in Milwaukee, with additional sourcing when a specific catalog number is not on the shelf. In-stock items above can ship the same business day when ordered by the cutoff.
In most cases, yes. We offer mail-in repair with testing and a warranty. Send photos and the catalog/series from the nameplate for a repair quote, often faster than waiting on obsolete new stock.
Request a quote with the full catalog string and series from the nameplate. We can confirm whether a nearby series is compatible or source the exact revision you need.
In-stock Milwaukee inventory typically ships the same business day when ordered before the cutoff, with ground and expedited options. Local pickup can be arranged. Contact us to schedule.
NJT Automation

NJTAutomation

Industrial Electronics

Supply & Repair, Milwaukee WI

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All trademarks, service marks, trade names, brand names, and logos displayed on this website are the property of their respective owners. Any references to manufacturers, products, or brands are for identification and compatibility purposes only and do not imply any affiliation with, endorsement by, sponsorship from, or authorization by the respective trademark owners.

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NJT Automation is an independent supplier of surplus, refurbished, and pre-owned industrial automation equipment. Unless expressly stated otherwise, NJT Automation is not an authorized distributor, dealer, representative, or affiliate of the original equipment manufacturer (OEM) for any products offered on this website.

Product Condition & Warranty

Products sold by NJT Automation may be surplus inventory, discontinued models, older series, or units with earlier manufacturing date codes than those currently available from the OEM or its authorized distribution network. As NJT Automation is not an authorized distributor, manufacturer warranties, support programs, and other OEM services may not apply. Any warranty provided is solely that of NJT Automation, where applicable.

Firmware & Software Licensing

Certain programmable logic controllers (PLCs), drives, HMIs, and other electronic products may require firmware to operate. While some products may include firmware, NJT Automation makes no representations or warranties regarding whether firmware is installed, the firmware version or revision level, its compatibility with your application, or its licensing status.

NJT Automation does not provide, obtain, transfer, or license firmware on behalf of customers. We make no representation regarding your ability or legal right to obtain, download, install, or use firmware from the OEM, its authorized distributors, or any other source. It is the customer's sole responsibility to ensure compliance with all applicable End User License Agreements (EULAs), software licenses, intellectual property rights, and other terms governing the acquisition, installation, and use of firmware.

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