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Used Power Transformers

  • ACME,TA-2-54537,INDUSTRIAL CONTROL TRANSFORMER VA:150 1-PHASE

    ACME,TA-2-54537,INDUSTRIAL CONTROL TRANSFORMER VA:150 1-PHASE NOS

    • 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 ...

    $100 USD
    Galion, OH
  • Transformatik,61305-901,1-Phase Control Transformer 60Hz 400VA

    Transformatik,61305-901,1-Phase Control Transformer 60Hz 400VA 115V

    • Manufacturer: Transformatik

    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 make sure the part number(s) m...

    $75 USD
    Galion, OH
  • NuTone,101-N,Class 2 Doorbell Transformer 16V

    NuTone,101-N,Class 2 Doorbell Transformer 16V 60 Cycles Line 120

    • Manufacturer: NuTone

    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...

    $18 USD
    Galion, OH
  • ACME,TA-2-54535,INDUSTRIAL CONTROL TRANSFORMER VA:50 1-PHASE

    ACME,TA-2-54535,INDUSTRIAL CONTROL TRANSFORMER VA:50 1-PHASE NOS

    • 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 ...

    $60 USD
    Galion, OH
  • EMB,WH095600305,TRANSFORMER 0.25KVA 380-500V PRI /

    EMB,WH095600305,TRANSFORMER 0.25KVA 380-500V PRI / 230V SEC

    • Manufacturer: EMB

    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
  • Trusted Seller
    MO-6365, ELECTRIC SERVICE 2000/2666 KVA

    MO-6365, ELECTRIC SERVICE 2000/2666 KVA DRY TRANSFORMER. 13800 HV. 480Y/277 LV.

    • Manufacturer: The Electric Service Co.

    “Contact us directly for a freight quote or you can setup your own freight. Please provide ship to address. Loading is included with the sale of the item.”

    $35,000 USD

    Get financing

    Est. $659/mo

    Willoughby, OH
  • Acme Transformer,T-2-53008-S,General Purpose Transformer

    Acme Transformer,T-2-53008-S,General Purpose Transformer

    • Manufacturer: Acme

    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
  • ACME TRANSFORMER,TA-1-81020,MACHINE TOOL TRANSFORMER 300VA

    ACME TRANSFORMER,TA-1-81020,MACHINE TOOL TRANSFORMER 300VA

    • 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 ...

    $40 USD
    Galion, OH
  • EDWARDS,592,TRANSFORMER

    EDWARDS,592,TRANSFORMER

    • Manufacturer: Edwards

    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
  • DONGAN,33-025,TRANSFORMER NOS

    DONGAN,33-025,TRANSFORMER NOS

    • Manufacturer: Dongan

    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
  • Trusted Seller
    MO-6142, MAGNETICS 750 KVA DRY

    MO-6142, MAGNETICS 750 KVA DRY TYPE TRANSFORMER CORE. 13800-480Y/277 V. 3 PH.

    • Manufacturer: Magnetics

    “Contact us directly for a freight quote or you can setup your own freight. Please provide ship to address. Loading is included with the sale of the item.”

    $8,500 USD

    Get financing

    Est. $167/mo

    Willoughby, OH
  • Trusted Seller
    MARELCO POWER SYSTEMS M-22703SE 110KVA

    MARELCO POWER SYSTEMS M-22703SE 110KVA 230V TRANSFORMER

    • Manufacturer: MARELCO POWER SYSTEMS

    MARELCO POWER SYSTEMS M-22703SE used transformer available. Ideal for industrial applications seeking reliable performance from a trusted manufacturer. Contact us for more details. Specification Table

    $2,200 USD
    Detroit, MI
  • Trusted Seller
    MARELCO POWER SYSTEMS M-7710E 20KVA

    MARELCO POWER SYSTEMS M-7710E 20KVA 230V TRANSFORMER

    • Manufacturer: MARELCO POWER SYSTEMS

    Marelco Power Systems M-7710E used transformer available. Reliable performance and robust design make it a great choice for various industrial applications. Ideal for enhancing electrical efficiency. Specificatio...

    $2,500 USD
    Detroit, MI
  • DORMEYER,9020,TRANSFORMER

    DORMEYER,9020,TRANSFORMER

    • Manufacturer: DORMEYER

    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 ...

    $20 USD
    Galion, OH
  • Trusted Seller
    MO-6116, AMETEK 25 KVA REGULATING

    MO-6116, AMETEK 25 KVA REGULATING TRANSFORMER. IPC 1025. 480 VAC. 1 PH. 208.3 A.

    • Manufacturer: AMETEK Powervar

    “Contact us directly for a freight quote or you can setup your own freight. Please provide ship to address. Loading is included with the sale of the item.”

    $4,500 USD
    Willoughby, OH
34567

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.