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Used Ac Drives (Variable Frequency Drives Vf Ds)

  • Trusted Seller
    Allen Bradley Powerflex DC Drives

    Allen Bradley Powerflex DC Drives

    • Manufacturer: Allen-Bradley
    • Model: PowerFlex

    Cat No. 20P41AD010RA0NNN, Input: 480V, 5.2A, 3PH; Output: 500V, 10A, 5 HP

    Spartanburg, SC
  • Trusted Seller
    ABB ACH550 Variable Frequency Drive

    ABB ACH550 Variable Frequency Drive

    • Manufacturer: ABB
    • Model: ACH550

    Cat No. ACH550-PDR-038A-4, 3PH, 380-480V, 38A, 25HP; Removed from Service August 2025

    Spartanburg, SC
  • Trusted Seller
    ABB ACH550 Variable Frequency Drive

    ABB ACH550 Variable Frequency Drive

    • Manufacturer: ABB
    • Model: ACH550

    Cat No. ACH550-PDR-038A-4, 3PH, 380-480V, 38A, 25HP; Removed from Service August 2025

    Spartanburg, SC
  • Trusted Seller
    ABB ACH550 Variable Frequency Drive

    ABB ACH550 Variable Frequency Drive

    • Manufacturer: ABB
    • Model: ACH550

    Cat No. ACH550-PDR-038A-4, 3PH, 380-480V, 38A, 25HP; Removed from Service August 2025

    Spartanburg, SC
  • Trusted Seller
    ABB ACH550 Variable Frequency Drive

    ABB ACH550 Variable Frequency Drive

    • Manufacturer: ABB
    • Model: ACH550

    Cat No. ACH550-PDR-038A-4, 3PH, 380-480V, 38A, 25HP; Removed from Service August 2025

    Spartanburg, SC
  • Trusted Seller
    ABB ACH550 Variable Frequency Drive

    ABB ACH550 Variable Frequency Drive

    • Manufacturer: ABB
    • Model: ACH550

    Cat No. ACH550-PDR-038A-4, 3PH, 380-480V, 38A, 25HP; Removed from Service August 2025

    Spartanburg, SC
  • Trusted Seller
    Allen Bradley Powerflex 755 Drives

    Allen Bradley Powerflex 755 Drives

    • Manufacturer: Allen-Bradley
    • Model: PowerFlex 755

    Cat No. 20G11ND077AA0NNNNN, 400/480V, Input: 3PH, 342-528V, 8303-72.3A; Output: 3PH, 0-460V, 85-77A

    Spartanburg, SC
  • Trusted Seller
    ABB ACH550 Variable Frequency Drive

    ABB ACH550 Variable Frequency Drive

    • Manufacturer: ABB
    • Model: ACH550

    Cat No. ACH550-PDR-038A-4, 3PH, 380-480V, 38A, 25HP; Removed from Service August 2025

    Spartanburg, SC
  • Trusted Seller
    ABB ACH550 Variable Frequency Drive

    ABB ACH550 Variable Frequency Drive

    • Manufacturer: ABB
    • Model: ACH550

    Cat No. ACH550-PDR-038A-4, 3PH, 380-480V, 38A, 25HP; Removed from Service August 2025

    Spartanburg, SC
  • ABB ACS380-040S-03A3-4 AC Drive 3AXD50000031888

    ABB ACS380-040S-03A3-4 AC Drive 3AXD50000031888

    • Manufacturer: ABB
    • Model: ACS

    “New item as seen in the images. No additional items are included in the sale. 30-day warranty Included.” ABB ACS380-040S-03A3-4 AC Drive 3AXD50000031888 8-8C6-88049-EW-ET

    $665 USD
    Baroda, MI
  • ABB ACS401602532 AC Drive 3-Phase

    ABB ACS401602532 AC Drive 3-Phase 480V 38A

    • Manufacturer: ABB
    • Model: ACS

    “UNIT AS SHOWN IN PICTURES, FOR PARTS OR REPAIR ONLY, NO WARRANTY” ABB ACS401602532 AC Drive 3-Phase 480V 38A 9-25G-54596-AB This item is not eligible for a return warranty. This item is being sold as is, as pict...

    $1,100 USD
    Baroda, MI
  • ABB ACS60402104000B0000901 Motor Variable Frequency

    ABB ACS60402104000B0000901 Motor Variable Frequency Drive ACS60402105000B0000901

    • Manufacturer: ABB
    • Model: ACS

    “UNIT AS SHOWN IN PICTURES, FOR PARTS OR REPAIR ONLY, NO WARRANTY.” ABB ACS60402104000B0000901 Motor Variable Frequency Drive ACS60402105000B0000901 ACS 600 0-D31B-36364-SF This item is not eligible for a return ...

    $4,000 USD
    Baroda, MI
  • Trusted Seller
    Allen Bradley Dynamic Brake Unit

    Allen Bradley Dynamic Brake Unit

    • Manufacturer: Allen-Bradley
    • Model: 1336

    New Open Box Name: Dynamic Brake Unit | Arrival date: 09-02-2025 | Dimensions l x w x h (inches): 22 x 14 x 13 | Capacity: 10HP | Electrical: 750W, 50/60Hz, 380-460VAC | Weight (lb.): 20 | Available quantity: 1

    $1,499 USD
    Euclid, OH
  • Trusted Seller
    Abb Acs150 Frequency Converter

    Abb Acs150 Frequency Converter

    • Manufacturer: ABB
    • Model: ACS

    New Open Box Name: Acs150 Frequency Converter | Arrival date: 10-13-2025 | Dimensions l x w x h (inches): 13 x 11 x 9 | Capacity: 2.2 KW/3 HP | Electrical: 3 PHASE 50/60 HZ 200-240 VAC INPUT 9.8 AMP | Weight (lb....

    $500 USD
    Euclid, OH
  • Trusted Seller
    Viastore / Allen Bradley Control

    Viastore / Allen Bradley Control Cabinet

    • Manufacturer: Allen-Bradley
    • Model: PowerFlex 700

    Name: Control Cabinet | Arrival date: 09-09-2025 | Dimensions l x w x h (inches): 4 x 31 x 88 | Weight (lb.): 805 | Available quantity: 1

    $1,274 USD
    Euclid, OH
1011121314

Overview

Variable-frequency drives (VFDs) are devices used to control the speed and torque of electric motors by varying the frequency and voltage of the power supplied. VFDs are commonly used in applications like HVAC systems, industrial machinery, and pumps where precise motor control improves efficiency and performance.

FAQ

What should I consider when buying a used variable-frequency drive?

Check the VFD's compatibility with your motor, its power rating, and any signs of wear or damage. Ensure it has been properly maintained and inquire about its operational history.

How do I ensure the VFD is shipped safely to my location?

Use a reputable transport service that specializes in electronic equipment. Ensure the VFD is securely packaged to prevent damage during transit and consider insuring the shipment.

What is the maintenance schedule for a variable-frequency drive?

Regularly inspect for dust and debris, check connections for tightness, and ensure proper ventilation. Follow the manufacturer's recommendations for periodic checks and servicing.