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Used Power Transformers

  • HITRAN,WI0110-00,INSULATED DRY TYPE TRANSFORMER 1000KVA

    HITRAN,WI0110-00,INSULATED DRY TYPE TRANSFORMER 1000KVA PRI 480 TO 1140Y/658

    • Manufacturer: Hitran

    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 ...

    $8,500 USD

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    Est. $167/mo

    Galion, OH
  • P&H,75Q330D1,INDUSTRIAL CONTROL TRANSFORMER 300VA 50/60HZ

    P&H,75Q330D1,INDUSTRIAL CONTROL TRANSFORMER 300VA 50/60HZ NOS

    • Manufacturer: P & H

    New, box is dirty and distressed from storage. 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 r...

    $400 USD
    Galion, OH
  • TRANS TEC OPT,2860,TRANSFORMER 3KVA PRI

    TRANS TEC OPT,2860,TRANSFORMER 3KVA PRI 480V SEC 208Y 3PH

    • Manufacturer: TRANS TEC

    REFURBISHED IN GOOD CONDITION 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 ...

    $300 USD
    Galion, OH
  • SQUARE D,9070-SK5271K-F30G13, TRANSFORMER DISCONNECT SWITCH

    SQUARE D,9070-SK5271K-F30G13, TRANSFORMER DISCONNECT SWITCH 600VAC

    • Manufacturer: Square D

    Used in good condition. Part was pulled from operation upon factory shutdown and has been in storage since. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multi...

    $80 USD
    Galion, OH
  • Micron Industrial Control,C100BTZ13,Transformer 0.100 KVA

    Micron Industrial Control,C100BTZ13,Transformer 0.100 KVA 230/460 to 115V

    • Manufacturer: Micron

    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...

    $35 USD
    Galion, OH
  • GE,9T58B505G30,Transformer 20kva 60hz 1p

    GE,9T58B505G30,Transformer 20kva 60hz 1p

    • Manufacturer: GE

    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 ...

    $40 USD
    Galion, OH
  • Hevi-Duty,T3000,Control Transformer Type SMT KVA

    Hevi-Duty,T3000,Control Transformer Type SMT KVA 3.0 240V

    • Manufacturer: Hevi-Duty

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

    $72 USD
    Galion, OH
  • General Electric,9T51B2,1-Phase Transformer 60HZ Type

    General Electric,9T51B2,1-Phase Transformer 60HZ Type QB

    • Manufacturer: GE

    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...

    $25 USD
    Galion, OH
  • EMERSON,E300,CONTROL TRANSFORMER .300KVA 240X480-120V NOS

    EMERSON,E300,CONTROL TRANSFORMER .300KVA 240X480-120V NOS

    • Manufacturer: Emerson

    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 ...

    $95 USD
    Galion, OH
  • Trusted Seller
    Dongan Single Phase Transformer 35-2020

    Dongan Single Phase Transformer 35-2020

    • Manufacturer: Dongan

    You are buying one (1) Dongan Single Phase Transformer 35-2020. It is 480 or 240 volts step down to 120 volts. Unit is fused. It is new in box.

    $179 USD
    Austinville, VA
  • Acme Electric,T253008S,Transformer HV240/480 LV120/240

    Acme Electric,T253008S,Transformer HV240/480 LV120/240

    • Manufacturer: Acme

    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
  • General Electric,9T56Y2922,Transformer 50/60CY 0.050KVA

    General Electric,9T56Y2922,Transformer 50/60CY 0.050KVA

    • Manufacturer: GE

    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...

    $120 USD
    Galion, OH
  • GE,9T58B53,Transformer 1.5 KVA 60 Hz

    GE,9T58B53,Transformer 1.5 KVA 60 Hz 1 Ph

    • Manufacturer: GE

    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 ...

    $60 USD
    Galion, OH
  • Chuo Electric,E189301 105 UN-10,Transformer 300Va

    Chuo Electric,E189301 105 UN-10,Transformer 300Va 50/60Hz

    • Manufacturer: Chuo

    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...

    $200 USD
    Galion, OH
  • Chuo Electric,E189301 105 UN-7,Transformer 300Va

    Chuo Electric,E189301 105 UN-7,Transformer 300Va 50/60Hz

    • Manufacturer: Chuo

    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...

    $85 USD
    Galion, OH
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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.