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Used Current Transformer (Ct)

  • Trusted Seller
    Pad-Mounted Transformers - MEC 3

    Pad-Mounted Transformers - MEC 3 MVA & Sunbelt 1500 KVA - 4160V to 480Y/277V - 3-Phase (2014)

    • Manufacturer: MEC & Sunbelt

    Overview This listing includes two pad-mounted transformers manufactured in July 2014, both configured for 4160V primary to 480Y/277V secondary voltage. The package includes one MEC 3 MVA transformer and one Sun...

    Ohio, USA
  • INSTRUMENT TRANSFORMER,AL-101,CURRENT TRANSFORMER NOS

    INSTRUMENT TRANSFORMER,AL-101,CURRENT TRANSFORMER NOS

    • Manufacturer: INSTRUMENT TRANSFORMER

    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 ...

    $35 USD
    Galion, OH
  • OHIO SEMITRONICS,13084,CURRENT TRANSFORMER RATIO 200:5

    OHIO SEMITRONICS,13084,CURRENT TRANSFORMER RATIO 200:5 NOS

    • Manufacturer: OHIO SEMITRONICS

    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 ...

    $170 USD
    Galion, OH
  • SIMPSON,01923,CURRENT TRANSFORMER 50:5 A 50-400HZ

    SIMPSON,01923,CURRENT TRANSFORMER 50:5 A 50-400HZ NOS

    • Manufacturer: Simpson

    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
  • ENGEL,EV3574,50VA TRANSFORMER PRI 230V SEC

    ENGEL,EV3574,50VA TRANSFORMER PRI 230V SEC 42V

    • Manufacturer: Engel

    NEW OLD STOCK 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...

    $80 USD
    Galion, OH
  • Honeywell,Class 2 AT140A 1000,Primary Transformer

    Honeywell,Class 2 AT140A 1000,Primary Transformer 120V 60Hz

    • Manufacturer: Honeywell

    New unused 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 pictu...

    $24 USD
    Galion, OH
  • Instrument Transformers,8SHT-601,Current Transformer Ratio 600.5A

    Instrument Transformers,8SHT-601,Current Transformer Ratio 600.5A Lot of 3

    • Manufacturer: Instrument Transformers

    Used. Part was pulled from operation upon factory shutdown. This item has been stored in an inventory cabinet since being pulled. Please see pictures for details and condition. You will receive what’s in the pict...

    $72 USD
    Galion, OH
  • E.I.L INSTRUMENTS,76 RL-301,CURRENT TRANSFORMER RATIO

    E.I.L INSTRUMENTS,76 RL-301,CURRENT TRANSFORMER RATIO 300:5A 600V NOS

    • Manufacturer: E.I.L INSTRUMENTS

    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
  • E.I.L INSTUMENTS,2 RL-1250,CURRENT TRANSFORMER 50-400HZ

    E.I.L INSTUMENTS,2 RL-1250,CURRENT TRANSFORMER 50-400HZ RATIO 200:5A NOS

    • Manufacturer: Current

    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 ...

    $20 USD
    Galion, OH
  • E.I.L INSTRUMENTS,5-RL-201,CURRENT TRANSFORMER 5-400HZ 600V

    E.I.L INSTRUMENTS,5-RL-201,CURRENT TRANSFORMER 5-400HZ 600V RATIO 200:5 A NOS

    • Manufacturer: E.I.L INSTRUMENTS

    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 ...

    $35 USD
    Galion, OH
  • Trusted Seller
    SHANGHAI DINGQI B2100A-06 15kVA Portable

    SHANGHAI DINGQI B2100A-06 15kVA Portable Transformer 480V – 220V

      This listing is for a USED SHANGHAI DINGQI B2100A-06. It is designed for industrial welding applications requiring voltage conversion and current regulation. This unit is categorized as a weld transformer and inc...

      $350 USD
      Detroit, MI
    • WESTON,605,CURRENT TRANSFORMER NOS

      WESTON,605,CURRENT TRANSFORMER NOS

      • Manufacturer: Weston

      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
    • SIMPSON,01299,CURRENT TRANSFORMER NOS

      SIMPSON,01299,CURRENT TRANSFORMER NOS

      • Manufacturer: Simpson

      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 ...

      $20 USD
      Galion, OH
    • EATON,C0150E2A,INDUSTRIAL CONTROL TRANSFORMER 150VA 230X460V

      EATON,C0150E2A,INDUSTRIAL CONTROL TRANSFORMER 150VA 230X460V PRI 115V SEC NOS

      • 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 ...

      $55 USD
      Galion, OH
    • WESTINGHOUSE,CSB-10,CURRENT TRANSFORMER

      WESTINGHOUSE,CSB-10,CURRENT TRANSFORMER

      • Manufacturer: Westinghouse

      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 ...

      $55 USD
      Galion, OH
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    Overview

    Current transformers (CTs) convert high alternating currents into a scaled secondary current for meters, relays and protection systems. Available as window, wound or bar types, CTs vary by ratio, accuracy class and saturation behavior. Proper selection focuses on rated primary current, burden, insulation, knee-point for protection use, and condition when buying used for substations, switchgear, or industrial panels.

    FAQ

    What should I check when buying a used CT?

    Verify the nameplate ratio and accuracy class, inspect for physical damage or oil leaks, request recent ratio and insulation test reports, and confirm the CT type (wound/window/bar) and its knee-point if used for protection.

    How should a CT be prepared and shipped safely?

    Drain and seal oil-filled CTs if required, protect bushings and cores, short and ground the secondary terminals, secure the unit to prevent shock, and use a carrier experienced with electrical equipment plus insurance.

    What routine maintenance and tests are essential for CTs?

    Perform visual inspections, insulation resistance tests, ratio and polarity checks, check for oil contamination on liquid-filled units, and schedule periodic accuracy and dielectric tests per manufacturer guidelines.