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Used Power Transformers

  • UNION CARBIDE-STANCOR,995284,TRANSFORMER P-8363 117V 50-60

    UNION CARBIDE-STANCOR,995284,TRANSFORMER P-8363 117V 50-60 CY NOS

    • Manufacturer: Union Carbide

    UNION CARBIDE-STANCOR,995284,TRANSFORMER P-8363 117V 50-60 CY 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 photo...

    $50 USD
    Galion, OH
  • Dongan Transformers ADL-230 Transformer Lighting

    Dongan Transformers ADL-230 Transformer Lighting Disconnect Enclosure 1-Phase

    • Manufacturer: Dongan

    “Used item as seen in the images. No additional items are included in the sale. 30-day warranty included.” Dongan Transformers ADL-230 Transformer Lighting Disconnect Enclosure 1-Phase 4-Z7-93379-JL-ZN

    $810 USD
    Baroda, MI
  • CUTLER-HAMMER,10942H6C,TRANSFORMER 60VA 50/60HZ

    CUTLER-HAMMER,10942H6C,TRANSFORMER 60VA 50/60HZ

    • Manufacturer: Cutler-Hammer

    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
  • SQUARE D,9070T50D1,CONTROL TRANSFORMER 0.05KVA

    SQUARE D,9070T50D1,CONTROL TRANSFORMER 0.05KVA

    • Manufacturer: Square D
    • Model: 9070T50D1

    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
  • SQUARE D,9070T150D13,CONTROL TRANSFORMER 0.15KVA

    SQUARE D,9070T150D13,CONTROL TRANSFORMER 0.15KVA

    • 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 ...

    $30 USD
    Galion, OH
  • Hammond,203239,Single Phase Dry Type Transformer

    Hammond,203239,Single Phase Dry Type Transformer Primary 480V Secondary 300V

    • Manufacturer: Hammond

    New never removed from skid, will arrange shipping with buyer Weight 160lbs Measurements 28"x28"x16". Please see pictures for details and condition. You will receive what’s in the pictures. If we have multiples o...

    $360 USD
    Galion, OH
  • Spang,L18340,Transformer 20KVA 3 Phase 460V

    Spang,L18340,Transformer 20KVA 3 Phase 460V New

    • Manufacturer: Spang

    New unused still on original skid, very very light indent on left side, see pictures for details, Will arrange shipping with Buyer Skidded Weight 395LBS Measurements 32"x33"x37" Bay 1 Section 8 Row 1

    $900 USD
    Galion, OH
  • Reliance Electric,69000-3X,Transformer 460V Pri 20.8

    Reliance Electric,69000-3X,Transformer 460V Pri 20.8 Volt Sec

    • Manufacturer: Reliance Electric

    New unused with 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...

    $75 USD
    Galion, OH
  • Daykin Electric,LTFS-07,Transformer Disconnect 500VA 460V

    Daykin Electric,LTFS-07,Transformer Disconnect 500VA 460V 1.08A

    • Manufacturer: Daykin Electric

    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...

    $80 USD
    Galion, OH
  • Trusted Seller
    ABB Power T&D Company 234C117

    ABB Power T&D Company 234C117 Transformer bushing 15kV 2000A

    • Manufacturer: ABB

    New old stock surplus item from spare parts storage. Has some shelf wear. If this item ships as Flat Rate Freight please see details in Shipping tab

    $1,850 USD
    Millersburg, IN
  • AUTOMATIC SWITCH CO.,106A203,TRANSFORMER CONT. DUTY

    AUTOMATIC SWITCH CO.,106A203,TRANSFORMER CONT. DUTY 125V DC PRE-OWNED

    • Manufacturer: AUTOMATIC SWITCH

    AUTOMATIC SWITCH CO.,106A203,TRANSFORMER CONT. DUTY 125V DC 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 p...

    $225 USD
    Galion, OH
  • FUKUDA,FE21-500,TRANSFORMER PHASE 1 500VA PRE-OWNED

    FUKUDA,FE21-500,TRANSFORMER PHASE 1 500VA PRE-OWNED

    • Manufacturer: FUKUDA

    FUKUDA,FE21-500,TRANSFORMER PHASE 1 500VA 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 then it will...

    $60 USD
    Galion, OH
  • JOSLYN CLARK,KTR672,TRANSFORMER 45VA 240/480 VOLT

    JOSLYN CLARK,KTR672,TRANSFORMER 45VA 240/480 VOLT .045 KVA NOS

    • Manufacturer: Clark

    JOSLYN CLARK,KTR672,TRANSFORMER 45VA 240/480 VOLT .045 KVA 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 t...

    $335 USD
    Galion, OH
  • EDWARDS,599,SIGNALING TRANSFORMER 120V AC PRIMARY

    EDWARDS,599,SIGNALING TRANSFORMER 120V AC PRIMARY 24V 40VA SECONDARY NEW

    • Manufacturer: Edwards

    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...

    $16 USD
    Galion, OH
  • Daihen,100kVA,Transformer JEC-2200-1995 Pr 460V Sec

    Daihen,100kVA,Transformer JEC-2200-1995 Pr 460V Sec 210-105 Single Phase

    • Manufacturer: Daihen

    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 ...

    $2,000 USD
    Galion, OH
2324252627

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.