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Used Power Transformers

  • SQUARE D,9070K75D1,INDUSTRIAL CONTROL TRANSFORMER NOS

    SQUARE D,9070K75D1,INDUSTRIAL CONTROL TRANSFORMER NOS

    • Manufacturer: Square D

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $45 USD
    Galion, OH
  • HAMMOND MANUFACTURING,PT500MQMJ,TRANSFORMER 500VA 50/60HZ

    HAMMOND MANUFACTURING,PT500MQMJ,TRANSFORMER 500VA 50/60HZ

    • Manufacturer: Hammond

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $45 USD
    Galion, OH
  • McGraw-Edison,Padmount Transformer,750 KVA 12470GRDY/7200-480GRDY/277

    McGraw-Edison,Padmount Transformer,750 KVA 12470GRDY/7200-480GRDY/277

    • Manufacturer: McGraw-Edison

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $22,500 USD

    Get financing

    Est. $423/mo

    Galion, OH
  • MICRON INDUSTRIES,B500MBT713RK,CONTROL TRANSFORMER 500VA NOS

    MICRON INDUSTRIES,B500MBT713RK,CONTROL TRANSFORMER 500VA NOS

    • Manufacturer: Micron

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $275 USD
    Galion, OH
  • ROMAN,T46680SB1DUWX,WELD TRANSFORMER 40KVA 480V

    ROMAN,T46680SB1DUWX,WELD TRANSFORMER 40KVA 480V

    • Manufacturer: Roman

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $450 USD
    Galion, OH
  • Johnson Controls,Y64AJ-1,Baso Transformer 120V 60Hz

    Johnson Controls,Y64AJ-1,Baso Transformer 120V 60Hz

    • Manufacturer: Johnson

    Used and in good condition. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multiples of the same item, the pictures may differ. Please review the pictures to ma...

    $90 USD
    Galion, OH
  • REVERE,RT-1850SL/M,PLUG IN TRANSFORMER 18VAC 50VA

    REVERE,RT-1850SL/M,PLUG IN TRANSFORMER 18VAC 50VA NOS

    • Manufacturer: REVERE

    REVERE,RT-1850SL/M,PLUG IN TRANSFORMER 18VAC 50VA NOS What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it wi...

    $25 USD
    Galion, OH
  • SQUARE D,9070E0-1,TRANSFORMER .035/.050KVA

    SQUARE D,9070E0-1,TRANSFORMER .035/.050KVA

    • Manufacturer: Square D

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $15 USD
    Galion, OH
  • GENERAL SIGNAL,E0603PB,HEVI-DUTY INDUSTRIAL CONTROL TRANSFORMER

    GENERAL SIGNAL,E0603PB,HEVI-DUTY INDUSTRIAL CONTROL TRANSFORMER

    • Manufacturer: Hevi-Duty

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $25 USD
    Galion, OH
  • GE,9T51B0027,TRANSFORMER..NEW IS SEALED BOX

    GE,9T51B0027,TRANSFORMER..NEW IS SEALED BOX

    • Manufacturer: GE

    NEW UNUSED!!..IN SEALED BOX!....NOS PLEASE SEE PICTURES FOR DETAILS AND CONDITION..YOU WILL RECIEVE WHAT IS IN THE PICTURES...IF WE HAVE MULTIPLES OF THE SAME ITEM,THE PICTURE MAY DIFFER...PLEASE REVIEW THE PICTU...

    $96 USD
    Galion, OH
  • Acme,TA-1-81218,Transformer 480V 1500VA 50/60 HZ

    Acme,TA-1-81218,Transformer 480V 1500VA 50/60 HZ

    • Manufacturer: Acme

    Used. Part was pulled from a working machine upon factory shutdown. Please see pictures for details and condition. Please check out our store to view additional listings. We hope to deal with you very soon! Room ...

    $40 USD
    Galion, OH
  • P&H,75Z57D1,TRANSFORMER .150KVA 50/60HZ

    P&H,75Z57D1,TRANSFORMER .150KVA 50/60HZ

    • Manufacturer: P & H

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $35 USD
    Galion, OH
  • RIB,TR75VA003,Transformer 24Vac 75VA 277V

    RIB,TR75VA003,Transformer 24Vac 75VA 277V

    • Manufacturer: RIB

    New unused without original box NOS. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multiples of the same item, the pictures may differ. Please review the pictu...

    $45 USD
    Galion, OH
  • HONEYWELL,AT72D1048,TRANSFORMER 40VA 120V-24V

    HONEYWELL,AT72D1048,TRANSFORMER 40VA 120V-24V

    • Manufacturer: Honeywell

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $25 USD
    Galion, OH
  • Trusted Seller
    Fanuc A80L-0028-0007-02 10.5KVA Transformer

    Fanuc A80L-0028-0007-02 10.5KVA Transformer

    • Manufacturer: Fanuc

    If this item ships as Flat Rate Freight please see details in Shipping tab

    $780 USD
    Millersburg, IN
2122232425

Overview

Power transformers transfer electrical energy between voltage levels for utilities, substations, and large industrial plants. These heavy, high-capacity units come in oil-filled or dry-type designs, with cooling classes (ONAN, ONAF, etc.), on-load tap changers, bushings and protection gear. Buyers must match voltage class, impedance, capacity (kVA/MVA), and cooling to system needs, and plan for foundation, handling, transport and commissioning.

FAQ

What specifications should I check when buying a used power transformer?

Confirm voltage ratios, kVA/MVA rating, impedance, cooling type, phase configuration, on-load tap changer condition, bushing types and insulation class, and recent test reports (DGA, insulation resistance, turns ratio).

How do I verify a used transformer's condition before purchase?

Request factory and maintenance records, Dissolved Gas Analysis (DGA), insulation resistance, power factor tests, sweep-frequency response (SFRA) and a visual inspection report for leaks, rust and bushing integrity.

What are the key shipping considerations for heavy power transformers?

Plan for specialized heavy-haul transport, load lifting equipment, route permits, weight/axle limits, skidding or cradling, draining oil if required by regulations, and coordination with local authorities for oversized loads.

What site preparations are needed before delivery and installation?

Prepare a level, rated foundation or skid with proper anchoring, ensure crane access and pad capacity, verify cable entry, grounding, oil containment for liquid-filled units, and arrange for qualified rigging and electrical commissioning crews.

What ongoing maintenance keeps a power transformer reliable?

Perform regular DGA, insulation resistance and oil quality tests, thermographic inspections, tap changer maintenance, bushing checks, cooling system inspections and timely repairs. Follow manufacturer intervals and keep detailed service records.