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Used Power Transformers

  • 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
  • Allen-Bradley,1487 N27,Control Circuit Transformer Ser

    Allen-Bradley,1487 N27,Control Circuit Transformer Ser B Type M 240/480V 60Hz

    • Manufacturer: Allen-Bradley

    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
  • EATON,C0500E3CFBXXRT,INDUSTRIAL CONTROL TRANSFORMER 500VA 50/60HZ

    EATON,C0500E3CFBXXRT,INDUSTRIAL CONTROL TRANSFORMER 500VA 50/60HZ

    • Manufacturer: Eaton

    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 ...

    $50 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
  • Trusted Seller
    HAMMOND POWER SOLUTIONS NMK015KD 15

    HAMMOND POWER SOLUTIONS NMK015KD 15 KVA Transformer Used

    • Manufacturer: Hammond
    • Model: NMK015KD

    HAMMOND POWER SOLUTIONS NMK015KD Transformer Delta-Delta 15 KVA Buyers are welcome to inspect equipment prior to purchase. Expedited shipping services are available upon request. This piece is located at Ide...

    $895 USD
    Holly, MI
  • 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
  • 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
  • Square D,9070TF500D1,Control Transformer 50/60Hz 0.5/0.3kVA

    Square D,9070TF500D1,Control Transformer 50/60Hz 0.5/0.3kVA

    • Manufacturer: Square D
    • Model: 9070TF500D1

    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...

    $65 USD
    Galion, OH
  • GE,M9T22B4314,1-Phase Open Transformer 15 KVA

    GE,M9T22B4314,1-Phase Open Transformer 15 KVA 240/480 to 120/240V

    • Manufacturer: GE

    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...

    $400 USD
    Galion, OH
  • GE,9T51B0010,1-Phase Transformer Type QB 1.00kVA

    GE,9T51B0010,1-Phase Transformer Type QB 1.00kVA 60Hz Class 180

    • Manufacturer: GE
    • Model: 9T51B0010

    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
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.