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Used Power Transformers

  • Hevi-Duty,D-44310,75VA Type SXO Industrial Control

    Hevi-Duty,D-44310,75VA Type SXO 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 ...

    $38 USD
    Galion, OH
  • Sola Hevi-Duty,E380,.380 KVA Type SBE

    Sola Hevi-Duty,E380,.380 KVA Type SBE 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 ...

    $36 USD
    Galion, OH
  • Micron ImpreviTRAN,3516040,Transformer 230/460V 0.050kVA

    Micron ImpreviTRAN,3516040,Transformer 230/460V 0.050kVA

    • Manufacturer: Micron ImpreviTRAN

    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...

    $50 USD
    Galion, OH
  • GE,368B530P1,Transformer 110V NOS

    GE,368B530P1,Transformer 110V NOS

    • Manufacturer: GE

    New 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 pictures to...

    $60 USD
    Galion, OH
  • SQUARE D,9070V800D35,TRANSFORMER 800KVA

    SQUARE D,9070V800D35,TRANSFORMER 800KVA

    • Manufacturer: Square D

    Used 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 make s...

    $300 USD
    Galion, OH
  • SBA,209-0137 Type UDGC,Multi Tap Transformer

    SBA,209-0137 Type UDGC,Multi Tap Transformer 24V

    • Manufacturer: SBA

    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
  • P&H,75Q319D1,TRANSFORMER 250VA NOS

    P&H,75Q319D1,TRANSFORMER 250VA NOS

    • 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 ...

    $150 USD
    Galion, OH
  • ALLEN BRADLEY,40171-002-03,TRANSFORMER MODULE 480V

    ALLEN BRADLEY,40171-002-03,TRANSFORMER MODULE 480V

    • 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 ...

    $10 USD
    Galion, OH
  • P&H,75Q331D1,240/480V Control Transformer

    P&H,75Q331D1,240/480V Control Transformer

    • 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 ...

    $52 USD
    Galion, OH
  • MICRON,B1K0-2268-GAH,TRANSFORMER 1KVA

    MICRON,B1K0-2268-GAH,TRANSFORMER 1KVA

    • 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 ...

    $150 USD
    Galion, OH
  • ALLEN-BRADLEY,X-208238,TRANSFORMER 120V 60/50CY NOS

    ALLEN-BRADLEY,X-208238,TRANSFORMER 120V 60/50CY NOS

    • Manufacturer: Allen-Bradley

    ALLEN-BRADLEY,X-208238,TRANSFORMER 120V 60/50CY 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 will...

    $15 USD
    Galion, 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
  • GE,9T58B1805,Specialty Transformer Type-IP

    GE,9T58B1805,Specialty Transformer Type-IP

    • 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 ...

    $560 USD
    Galion, OH
  • GS,Y750,HEAVY DUTY CONTROL CIRCUIT TRANSFORMER

    GS,Y750,HEAVY DUTY CONTROL CIRCUIT TRANSFORMER 750 KVA NOS

    • Manufacturer: Sola/Hevi-Duty

    New 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 pictures to...

    $56 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.