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Used Power Transformers

  • P&H,75Q315D1,Control Circuit Transformer 500VA 50/60HZ

    P&H,75Q315D1,Control Circuit Transformer 500VA 50/60HZ

    • Manufacturer: P & H

    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...

    $250 USD
    Galion, OH
  • K.K Sanwa,1SB1000,Transformer 1000kVA 100V 50/60Hz

    K.K Sanwa,1SB1000,Transformer 1000kVA 100V 50/60Hz

    • Manufacturer: Sanwa

    Refurbished 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 picture...

    $85 USD
    Galion, OH
  • Moeller,Stz 0.8,Transformer 460V Pri 110V

    Moeller,Stz 0.8,Transformer 460V Pri 110V Sec 50-60 HZ

    • Manufacturer: Klöckner Moeller

    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...

    $48 USD
    Galion, OH
  • GE,55-172809G038,Control Transformer 240/480V- 24V 60Hz

    GE,55-172809G038,Control Transformer 240/480V- 24V 60Hz

    • 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 ...

    $24 USD
    Galion, OH
  • HONEYWELL,AT72D1048,TRANSFORMER 40VA 120V-24V

    HONEYWELL,AT72D1048,TRANSFORMER 40VA 120V-24V

    • Manufacturer: Honeywell

    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
  • 2000/2300 KVA, 22,900 PRI, 480

    2000/2300 KVA, 22,900 PRI, 480 SEC, RE UPTEGRAFF, TRANSFORMER, USED POWER TRANSFORMER

    • Manufacturer: UPTEGRAFF

    Inventory id: 12156500000 | Rating: 2000 | Primary voltage: 22,900 | Secondary voltage: 480 | Phase: 3 | Hertz: 60 | Taps above and below: 2 ABOVE - 2 BELOW | Taps voltages: A-24,100 , B-23,500, C-22,100, D-2230...

    Pittsburgh, PA
  • General Electric,MC-63 700X84-G1,Phase Shifting Transformer

    General Electric,MC-63 700X84-G1,Phase Shifting Transformer 120V

    • Manufacturer: GE

    New unused, NOS, no box was in an inventory cabinet. 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 ...

    $144 USD
    Galion, OH
  • EMERSON,E300,HEVI-DUTY CONTROL TRANSFORMER .300KVA 240X480-120V

    EMERSON,E300,HEVI-DUTY 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
  • Magnetics,150 KVA 3 Phase Dry

    Magnetics,150 KVA 3 Phase Dry Type Transformer HV 480V LV 277/480V

    • Manufacturer: Magnetics

    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 ...

    $2,250 USD
    Galion, OH
  • SQUARE D,9070T500D43,TRANSFORMER CONTROL 500VA 400/440/460-230

    SQUARE D,9070T500D43,TRANSFORMER CONTROL 500VA 400/440/460-230

    • 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...

    $240 USD
    Galion, OH
  • Hevi-Duty,Type SZ0 48319,Control Cuircuit Transformer

    Hevi-Duty,Type SZ0 48319,Control Cuircuit Transformer 50/60 Cycles 0.300KVA

    • Manufacturer: Hevi-Duty

    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...

    $85 USD
    Galion, OH
  • EGS,HS1F1.5AS,General Purpose Transformer 1.5kva 240/480V

    EGS,HS1F1.5AS,General Purpose Transformer 1.5kva 240/480V 60Hz

    • Manufacturer: EGS

    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...

    $220 USD
    Galion, OH
  • Square D,9070 MN500G0,Transformer Disconnect 500VA

    Square D,9070 MN500G0,Transformer Disconnect 500VA 230/460V 50/60Hz

    • 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...

    $92 USD
    Galion, OH
  • Hammond,D175JCUB1D,Transformer 175KVA HV-460V LV-230V 3PH

    Hammond,D175JCUB1D,Transformer 175KVA HV-460V LV-230V 3PH

    • Manufacturer: Hammond

    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 ...

    $1,400 USD
    Galion, OH
  • Nunome Electric,NESH1200MUL8002-10,Transformer 1-Phase 50/60Hz 1.2kVA

    Nunome Electric,NESH1200MUL8002-10,Transformer 1-Phase 50/60Hz 1.2kVA

    • Manufacturer: Nunome 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...

    $220 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.