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Used Isolation Transformers

  • Trusted Seller
    RUSS ELECTRIC RTBD6003CE, 600A 277/480V

    RUSS ELECTRIC RTBD6003CE, 600A 277/480V 3Ø AUTOMATIC TRANSFER SWITCH- ATS314

    • Manufacturer: RUSS ELECTRIC

    This listing is for one: RUSS ELECTRIC RTBD6003CE ISOLATION BYPASS SWITCH 600 AMP, 3 PHASE, 4 WIRE (ONLY 3 WIRES ARE SWITCHED) STOCK# ATS314 USED/TESTED Terms and Conditions

    $2,000 USD
    North Hampton, NH
  • Acme 45kVA 480V Transformer 208Y/120

    Acme 45kVA 480V Transformer 208Y/120 3PH NS10-0253313-35 🟦

    • Manufacturer: Acme

    Acme 45kVA Transformer Cat No. NS10-0253313-35 Non-Linear Load Isolation Transformer 45 kVA Primary- 480V W/FC TAPS Secondary- 208Y/120 60 Hz 3 Phase ***30-day Warranty- Guaranteed to work or your money back.*** ...

    $1,127 USD
    Arlington, TX
  • Trusted Seller
    REX MANUFACTURING BA30JS1

    REX MANUFACTURING BA30JS1

    • Manufacturer: Rex Manufacturing
    • Model: BA30JS1

    30KVA TRANSFORMER 600V - 230Y/133 Power: 30.0 kva

    Burlington, Canada
  • Trusted Seller
    REX MANUFACTURING BA30JS1

    REX MANUFACTURING BA30JS1

    • Manufacturer: Rex Manufacturing
    • Model: BA30JS1

    30KVA TRANSFORMER 600V - 230Y/133 Power: 30.0 kva

    Burlington, Canada
  • Radiodetection TX-121 Isolation Transformer

    Radiodetection TX-121 Isolation Transformer

    • Manufacturer: Radiodetection

    This is used with the Tx range of transmitters to apply a low frequency signal across shorted phases on LV cables to enable location of phase to phase faults. (Rated for connection to CAT IV mains circuits up to ...

    $5,347 USD

    Get financing

    Est. $105/mo

    Miami Lakes, FL
  • Radiodetection 12V Automotive Car Power

    Radiodetection 12V Automotive Car Power Lead with Isolation Transformer

    • Manufacturer: Radiodetection

    This lead is used to power the transmitter directly from a 12V automotive supply using the transmitter DC socket. It is fitted with an isolation transformer for protection.

    $713 USD
    Miami Lakes, FL
  • QTY. 1. GCA / PRECISION

    QTY. 1. GCA / PRECISION SCIENTIFIC FUL-KONTROL (CONTROL TRANSFORMER ONLY) 120 V

    • Manufacturer: Thermo Fisher Scientific

    QTY. 1. GCA / PRECISION SCIENTIFIC FUL-KONTROL (CONTROL TRANSFORMER ONLY) 120 V 1000 WATTS 50/60 CYCLE CAT. NO: VT8N4. OUTPUT AMPS: 10. .

    Texas City, TX
  • QTY. 1. STANCOR ISOLATION TRANSFORMER

    QTY. 1. STANCOR ISOLATION TRANSFORMER INPUT 115V 50/60HZ OUTPUT 115V 100VA 0.87A MODEL GIS-100

      QTY. 1. STANCOR ISOLATION TRANSFORMER INPUT 115V 50/60HZ OUTPUT 115V 100VA 0.87A MODEL GIS-100 S/N N/A.

      Texas City, TX
    • QTY. 3. STANCOR ISOLATION TRANSFORMERS

      QTY. 3. STANCOR ISOLATION TRANSFORMERS INPUT 115V 50/60HZ OUTPUT 115V 250VA 2.17 A (2)0226 B (1) 0030B.

        QTY. 3. STANCOR ISOLATION TRANSFORMERS INPUT 115V 50/60HZ OUTPUT 115V 250VA 2.17 A (2)0226 B (1) 0030B.

        Texas City, TX
      • Trusted Seller
        METH P 2000 VA TYPE

        METH P 2000 VA TYPE T1UL-F

        • Manufacturer: METH

        🔧 Technical Specifications – METH Isolation Transformer P 2000 VA Type T1UL-F - Brand: METH - Model: T1UL-F - Rated Power: 2000 VA (2 kVA) - Type: Isolation / separation transformer - Primary Voltage: Typically ...

        $73 USD
        Delson, Canada
      • Trusted Seller
        HAMMOND HJ9J

        HAMMOND HJ9J

        • Manufacturer: Hammond

        HAMMOND HJ9J Transformer Brand: Hammond Catalog No.: HJ9J Type: Control / Isolation Transformer Primary Voltage: 600 V Secondary Voltage: 120 V Power Rating: 250 VA (Volt-Amps) Frequency: 60 Hz Phase: Sin...

        $36 USD
        Delson, Canada
      • Trusted Seller
        METH T1UL 600 VA

        METH T1UL 600 VA

        • Manufacturer: METH

        Product Sheet – METH T1UL 600 VA Type: Single-phase Control / Isolation Transformer Brand: METH Model: T1UL Power Rating: 600 VA --------------------------------------------------------------- 🔧 Technical Sp...

        $54 USD
        Delson, Canada
      • Trusted Seller
        BLOCK USTE 1600/2x115

        BLOCK USTE 1600/2x115

        • Manufacturer: BLOCK

        Product Sheet – BLOCK USTE 1600/2x115 (TYPE 192/66/B) Type: Single-phase Isolation / Power Supply Transformer Brand: BLOCK Model: USTE 1600/2x115 Manufacturer Ref.: TYPE 192/66/B -----------------------------...

        $87 USD
        Delson, Canada
      • Trusted Seller
        METH PN 1500VA TIPO: T3T

        METH PN 1500VA TIPO: T3T

        • Manufacturer: METH

        Product Sheet – METH TIPO: T3T 1500 VA Type: Single-phase Control / Isolation Transformer Brand: METH Model / Part Number: PN 1500VA – TIPO: T3T ---------------------------------------------------------------...

        $73 USD
        Delson, Canada
      • Trusted Seller
        ERC Type 800589

        ERC Type 800589

        • Manufacturer: ERC

        ⚙️ Technical Specifications - Model: ERC 800589 - Type: Single-phase control transformer - Estimated Power Rating: approximately 63–110 VA (common for this model) - Primary Voltage: 63–110 VAC - Frequency: 50/60...

        $36 USD
        Delson, Canada
      1920212223

      Overview

      Isolation transformers provide electrical separation between the supply and the load to reduce electrical noise, prevent ground loops, and improve personnel and equipment safety. Common in industrial and control applications, they come in dry or oil-filled designs, single- or three-phase, and a wide range of kVA ratings. They protect sensitive electronics and stabilize power for panels, drives, and mobile equipment charging.

      FAQ

      What should I consider when buying a used isolation transformer?

      Check kVA rating, primary/secondary voltages, phase, impedance, insulation condition, nameplate details and test records. Verify oil condition for oil-filled units, look for corrosion or damage, and request recent ratio and insulation resistance tests.

      How do I ensure the isolation transformer is shipped safely?

      Use a carrier experienced with heavy electrical gear, secure lifting points and skids, drain oil if required and comply with hazmat rules for oil-filled units. Crate or brace the unit, label weight and center of gravity, and insure for transit.

      What is the maintenance schedule for an isolation transformer?

      Perform visual checks monthly, tighten connections and inspect bushings yearly, carry out insulation resistance and turns-ratio tests annually, do oil sampling and treatment per manufacturer intervals, and use thermography for load checks.