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Used Power Transformers

  • Trusted Seller
    Siemens 4AT3096-0EQ80-0FD0 Stepdown Transformer 3/17kva

    Siemens 4AT3096-0EQ80-0FD0 Stepdown Transformer 3/17kva HV 280-575V LV 120V 1PH

    • Manufacturer: Siemens

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

    $1,550 USD
    Millersburg, IN
  • Trusted Seller
    9T58K2815 General Electric - Control

    9T58K2815 General Electric - Control Power Transformer

    • Manufacturer: GE

    All parts ordered before 3:30 pm (EST) typically ship same day via UPS, FedEx, or USPS! If the order is placed after 3:30 pm and you still would like it send out same day, feel free to reach out to us and we will...

    $200 USD
    Muskegon, MI
  • GE,9T58K0507G37,TRANSFORMER PRI-480V SEC-120V TYPE IP

    GE,9T58K0507G37,TRANSFORMER PRI-480V SEC-120V TYPE IP .300KVA 1 PH PRE-OWNED

    • Manufacturer: GE

    GE,9T58K0507G37,TRANSFORMER PRI-480V SEC-120V TYPE IP .300KVA 1 PH 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 i...

    $65 USD
    Galion, OH
  • Trusted Seller
    Basler Transformer, BE15486

    Basler Transformer, BE15486

    • Manufacturer: Basler

    Basler Transformer, PN-BE15486 Mpn: BE15486

    $125 USD
    Ephrata, PA
  • ARCUS M MTD-6478 Transformer 6.478KVA

    ARCUS M MTD-6478 Transformer 6.478KVA 3-PHASE, With 30 Days Warranty

    • Manufacturer: MTD

    This add is for selling MARCUS MTD-6478 Transformer 6.478KVA 3-PHASE 50/60HZ PRIMARY 380-480V SECONDARY 200V 18.7A. Pulled From A Working Environment. / 30 Days Warranty Please contact us for urgent shipping ...

    $550 USD
    Redford Charter Township, MI
  • Trusted Seller
    SETZERMANN RFT-V TRANSFORMER ($70 OBO)

    SETZERMANN RFT-V TRANSFORMER ($70 OBO)

    • Manufacturer: SETZERMANN

    SETZERMANN RFT-V TRANSFORMER 380V WS-GE 92V 0,27A ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide your delivery instructions (addre...

    $70 USD
    Waukesha, WI
  • Trusted Seller
    PACIFIC 712556 D TRANSFORMER ($30

    PACIFIC 712556 D TRANSFORMER ($30 OBO)

    • Manufacturer: Pacific

    “Used, fair condition” PACIFIC 712556 D TRANSFORMER ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide your delivery instructions (add...

    $30 USD
    Waukesha, WI
  • Trusted Seller
    PACIFIC 712553 L TRANSFORMER ($30

    PACIFIC 712553 L TRANSFORMER ($30 OBO)

    • Manufacturer: Pacific

    “Used, fair condition” PACIFIC 712553 L TRANSFORMER ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide your delivery instructions (add...

    $30 USD
    Waukesha, WI
  • Trusted Seller
    C175-5 TRANSFORMER ($15 OBO)

    C175-5 TRANSFORMER ($15 OBO)

      “Used, good condition” C175-5 TRANSFORMER ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide your delivery instructions (address, time...

      $15 USD
      Waukesha, WI
    • Trusted Seller
      EMERSON E060 TRANSFORMER ($50 OBO)

      EMERSON E060 TRANSFORMER ($50 OBO)

      • Manufacturer: Emerson

      “USED, EXCELLENT” EMERSON E060 TRANSFORMER 120 V 240X480 V H3 TYPE ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide your delivery in...

      $50 USD
      Waukesha, WI
    • Trusted Seller
      FAKUDA 32476 TRANSFORMER ($40 OBO)

      FAKUDA 32476 TRANSFORMER ($40 OBO)

      • Manufacturer: FAKUDA

      “USED, EXCELLENT” FAKUDA 32476 TRANSFORMER 0.45 A 100 VA 230-460 V ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide your delivery in...

      $40 USD
      Waukesha, WI
    • Trusted Seller
      Northwestern II-10026 Jobsite Power Transformer

      Northwestern II-10026 Jobsite Power Transformer 25kva 440V 100A 1Ph 120V Outlet

      • Manufacturer: Northwestern

      Used, in Good Working Condition. This is a jobsite transformer. This takes 480V 3 phase power. 100 amp input. 40 amp pass through. 60 amps go to transformer. This would be a 25 kw 3 phase to 1 phase. (1) 20 amp 2...

      $2,970 USD
      Millersburg, IN
    • NEW - 30 KVA, 480/277

      NEW - 30 KVA, 480/277 VOLT, HAMMOND POWER SOLUTIONS, DRY TYPE TRANSFORMER

      • Manufacturer: Hammond

      Inventory id: 12315400000 | Rating: 30 | Primary voltage: 480 | Secondary voltage: 277 | Phase: 3 | Hertz: 60 | Taps above and below: 2-2 1/2 ABOVE, 4-2 1/2 BELOW | Impedance: 6.7 | Weight: 260 | Temperature ris...

      Pittsburgh, PA
    • Trusted Seller
      HEVI-DUTY T150 TRANSFORMER ($35 OBO)

      HEVI-DUTY T150 TRANSFORMER ($35 OBO)

      • Manufacturer: Hevi-Duty

      “Used, good condition” HEVI-DUTY T150 TRANSFORMER 150 VA Type SMT Class 180 ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide your de...

      $35 USD
      Waukesha, WI
    • Trusted Seller
      STABIPACK SJX-A2403 TRANSFORMER ($30 OBO)

      STABIPACK SJX-A2403 TRANSFORMER ($30 OBO)

      • Manufacturer: STABIPACK

      STABIPACK SJX-A2403 TRANSFORMER 100/200 VAC 24 VDC 3 AMP ***Local deliveries available, simply message us before purchasing so we can properly adjust the listing for you. Please provide your delivery instructions...

      $30 USD
      Waukesha, WI
    3334353637

    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.