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Used single in Canada

  • Single-Phase Transformers 5kva, 25kva, 30kva

    Single-Phase Transformers 5kva, 25kva, 30kva 600, 480, 240, 208V

      5 kVA Marcus 1ph Isolation Type, 480V-120/240 - $350. 5 kVA REX 1ph Isolation Type, 208V-210/220/230V, Condition: Like new - $450. 25 kVA Rex single phase transformer. 1ph, 600-240/120 - SOLD 25 kVA Marcus 1ph, 3...

      Toronto, Canada
    • Trusted Seller
      Beaver Electrical 37.5kVA – 600V

      Beaver Electrical 37.5kVA – 600V to 120/ 240V Single Phase Transformer

      • Manufacturer: Beaver Electrical Machinery Ltd

      Dry-Type Isolation-Transformer Condition: Used Power rating: 37.5kVA | Primary voltage: 600V | Secondary voltage: 120/240 | Phase: 1 | Hertz: 60 | Cat. no.: SVR37T-G8A | Weight: 234lbs | Unit #: D 77498

      Saskatoon, 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
    • Trusted Seller
      2016 USED–LIKE NEW 2016 METALEC

      2016 USED–LIKE NEW 2016 METALEC 3 kVA x 2 Control Power Transfer Box 4160 pri. volts, 120/240 sec. volts – Transformers – 2 x 3 kVA, 4160 volts, 120 volts, Single-phase , Isolation

      • Manufacturer: METALEC
      • Phase type: Single-phase

      Kva: 2 x 3 kVA | Primary voltage: 4160 volts | Secondary voltage: 120 volts | Phase: Single-phase | Auto vs isolation: Isolation | Made in: CANADA

      $3,233 USD
      British Columbia, Canada
    • Trusted Seller
      10kVA Beaver Electric Transformer

      10kVA Beaver Electric Transformer

      • Manufacturer: Beaver Electrical Machinery
      • Phase type: Single-phase

      Overall Dimensions: Serial: A 7129 | Kva: 10kVA | Phase: Single Phase Isolation | Frequency: 60Hz | Primary voltage: 208 Volt | Secondary voltage: 120/240 Volt | Enclosure: Type-2 | Width: 20in | Depth: 13in | He...

      Savona, Canada
    • Trusted Seller
      MARCUS TRANSFORMER MS3A2

      MARCUS TRANSFORMER MS3A2

      • Manufacturer: Marcus
      • Phase type: Single-phase

      Kva: 3 kVA | Primary voltage: 600 volts | Secondary voltage: 120/240 volts | Phase: Single-phase | Auto vs isolation: Isolation | Oil vs dry: Dry

      $503 USD
      British Columbia, Canada
    • Trusted Seller
      HAMMOND MANUFACTURING 135798

      HAMMOND MANUFACTURING 135798

      • Manufacturer: Hammond
      • Phase type: Single-phase

      Kva: 3 kVA | Phase: Single-phase | Auto vs isolation: Isolation | Oil vs dry: Dry | Primary voltage: 575/546V | Secondary voltage: 300V

      $427 USD
      British Columbia, Canada
    • Trusted Seller
      HAMMOND MANUFACTURING 135667

      HAMMOND MANUFACTURING 135667

      • Manufacturer: Hammond
      • Phase type: Single-phase

      Kva: 6 kVA | Phase: Single-phase | Auto vs isolation: Auto | Oil vs dry: Dry | Primary voltage: 575/546V | Secondary voltage: 300V

      $298 USD
      British Columbia, Canada
    • Trusted Seller
      MARCUS TRANSFORMER MS3A2

      MARCUS TRANSFORMER MS3A2

      • Manufacturer: Marcus
      • Phase type: Single-phase

      Kva: 3 kVA | Primary voltage: 600 volts | Secondary voltage: 120/240 volts | Phase: Single-phase | Auto vs isolation: Isolation | Oil vs dry: Dry

      $503 USD
      British Columbia, Canada
    • Trusted Seller
      HAMMOND MANUFACTURING GX9P

      HAMMOND MANUFACTURING GX9P

      • Manufacturer: Hammond
      • Phase type: Single-phase

      Kva: 10 kVA | Primary voltage: 600 volts | Secondary voltage: 120/240 volts | Phase: Single-phase | Auto vs isolation: Isolation | Oil vs dry: Dry | Made in: CANADA

      $625 USD
      British Columbia, Canada
    • Trusted Seller
      SQUARE D 9070TF100D37

      SQUARE D 9070TF100D37

      • Manufacturer: Square D
      • Phase type: Single-phase

      Kva: 0.1 kVA | Primary voltage: 550/575/60V | Secondary voltage: 110/115/120/220/230/240 | Phase: Single-phase | Auto vs isolation: Isolation

      $503 USD
      British Columbia, Canada
    • Trusted Seller
      BEAVER SC10HK

      BEAVER SC10HK

      • Manufacturer: BEAVER
      • Phase type: Single-phase

      Kva: 10 kVA | Primary voltage: 480 volts | Secondary voltage: 120/240 volts | Phase: Single-phase | Auto vs isolation: Isolation | Oil vs dry: Dry | Made in: CANADA

      $251 USD
      British Columbia, Canada
    • Trusted Seller
      DELTA CDSC0007VHA6XXJA

      DELTA CDSC0007VHA6XXJA

      • Manufacturer: Delta
      • Phase type: Single-phase

      Kva: 7.5 kVA | Primary voltage: 600 volts | Secondary voltage: 208 volts | Phase: Single-phase | Auto vs isolation: Isolation | Oil vs dry: Dry | Enclosure type: Nema 1

      $574 USD
      British Columbia, Canada
    • Trusted Seller
      SQUARE D C1S67F

      SQUARE D C1S67F

      • Manufacturer: Square D
      • Phase type: Single-phase

      Kva: 1 kVA | Primary voltage: 220 volts | Secondary voltage: 440 volts | Phase: Single-phase | Auto vs isolation: Auto | Oil vs dry: Dry | Enclosure type: Nema 3R | Made in: UNITED STATES

      $323 USD
      British Columbia, Canada
    • Trusted Seller
      BEMAG UA1037P480

      BEMAG UA1037P480

      • Manufacturer: BEMAG
      • Phase type: Single-phase

      Kva: 37.5 kVA | Primary voltage: 240/480 volts | Secondary voltage: 120/240 volts | Phase: Single-phase | Auto vs isolation: Isolation | Oil vs dry: Dry | Enclosure type: Nema 3R | Made in: CANADA

      $1,649 USD
      British Columbia, Canada
    12

    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.