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Used Power Transformers

  • Kasuga,DVSC300AE21,Single Phase Transformer 300VA HV

    Kasuga,DVSC300AE21,Single Phase Transformer 300VA HV 220V LV 110V

    • Manufacturer: Kasuga

    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...

    $400 USD
    Galion, OH
  • Spang,235KVA,3 Phase Dry Type Transformer

    Spang,235KVA,3 Phase Dry Type Transformer HV-2300D to LV-250Y/144V

    • Manufacturer: Spang

    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 ...

    $6,800 USD

    Get financing

    Est. $134/mo

    Galion, OH
  • Spang,500KVA,3 Phase Dry Type Transformer

    Spang,500KVA,3 Phase Dry Type Transformer HV-2500D to LV-230Y/133V

    • Manufacturer: Spang

    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 ...

    $9,500 USD

    Get financing

    Est. $187/mo

    Galion, OH
  • ALLEN BRADLEY,80022-197-12 3 KVA, TRANSFORMER

    ALLEN BRADLEY,80022-197-12 3 KVA, TRANSFORMER PRI 480V SEC 120V 1PH

    • Manufacturer: Allen-Bradley

    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 ...

    $850 USD
    Galion, OH
  • Trusted Seller
    VAN DORN 370082-81 Power Supply

    VAN DORN 370082-81 Power Supply Transformer Used

    • Manufacturer: Van Dorn Demag

    Removed from: 300 Ton Van Dorn Injection Molding Machine Model: 300-RS-30F-HT Serial: 2252 Expedited shipping services are available upon request. All taxes due are the responsibility of purchaser. Visitors...

    $62 USD
    Holly, MI
  • EMERSON,E250WA,CONTROL TRANSFORMER .250KVA PRI 240/480V

    EMERSON,E250WA,CONTROL TRANSFORMER .250KVA PRI 240/480V SEC 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
    CEE Electra 0055/2000 Power Transformer

    CEE Electra 0055/2000 Power Transformer 208-610VAC 3ph Primary Multi-Tap AC/DC

    • Manufacturer: CEE Electra

    In Good Used Condition, Removed from a Working Environment. If this item ships as Flat Rate Freight please see details in Shipping tab

    $1,000 USD
    Millersburg, IN
  • MICRON,B250BTZ13RBF,CONTROL TRANSFORMER 250VA 50/60HZ

    MICRON,B250BTZ13RBF,CONTROL TRANSFORMER 250VA 50/60HZ

    • 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 ...

    $25 USD
    Galion, OH
  • Square D,500SV1B,1-Phase Transformer 0.500VA 240/480VAC

    Square D,500SV1B,1-Phase Transformer 0.500VA 240/480VAC

    • Manufacturer: Square D
    • Model: 500SV1B

    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...

    $110 USD
    Galion, OH
  • P&H,75Q89-D1,CONTROL TRANSFORMER 0.500KVA PRI 240/480V

    P&H,75Q89-D1,CONTROL TRANSFORMER 0.500KVA PRI 240/480V SEC 120V

    • 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 ...

    $55 USD
    Galion, OH
  • Emerson,DT651H51S 51KVA,Transformer HV 460V Low

    Emerson,DT651H51S 51KVA,Transformer HV 460V Low 460Y/266 3PH

    • Manufacturer: Emerson

    New Unused will arrange shipping with buyer Skidded 376Lbs Measuring 30"x32"x33" Please see pictures for details and condition. You will receive what’s in the pictures. If we have multiples of the same item, the ...

    $1,200 USD
    Galion, OH
  • Siemens,4AM3442 8DN00 0EA0,Transformer 50/60HZ 0.1/0.31kVA

    Siemens,4AM3442 8DN00 0EA0,Transformer 50/60HZ 0.1/0.31kVA

    • Manufacturer: Siemens

    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...

    $75 USD
    Galion, OH
  • ALLEN BRADLEY,X-326539,CONTROL CIRCUIT TRANSFORMER PRI-220/440V

    ALLEN BRADLEY,X-326539,CONTROL CIRCUIT TRANSFORMER PRI-220/440V SEC-240/480V

    • Manufacturer: Allen-Bradley

    ALLEN BRADLEY,X-326539,CONTROL CIRCUIT TRANSFORMER PRI-220/440V SEC-240/480V 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 i...

    $45 USD
    Galion, OH
  • DONGAN,N10-LF3X-NB,INDUSTRIAL IGNITION TRANSFORMER 480V 60HZ

    DONGAN,N10-LF3X-NB,INDUSTRIAL IGNITION TRANSFORMER 480V 60HZ NEW

    • Manufacturer: Dongan

    New in original box. 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...

    $200 USD
    Galion, OH
  • MAGNETEK,636-1191,TRANSFORMER CLASS 180 500VA 50/60HZ

    MAGNETEK,636-1191,TRANSFORMER CLASS 180 500VA 50/60HZ PRE-OWNED

    • Manufacturer: Magnetek

    MAGNETEK,636-1191,TRANSFORMER CLASS 180 500VA 50/60HZ PRE-OWNED 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 ...

    $155 USD
    Galion, OH
2728293031

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.