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Single Phase – Standard Isolation Transformers


transientIsolation transformers should be used on all systems that require grounding on the load. Rex single-phase distribution transformers are ideal for supplying auxiliary lighting circuits from 600 V and lower supplies, and electric heating equipment.


  • General purpose ventilated steel enclosure suitable for indoor, dry locations. After fabrication, all metal is finished in ASA 61 grey power coating suitable for most industrial and commercial installations.
  • Transformers up to 75 kVA capacity may be readily hung on H-columns, walls, shelves or floor mounted to suit each installation. Most units have lifting lugs, conduit Knock-Outs (Kos) and a removable front  cover for convenient access to terminals.
  • Transformers rated above 75 kVA  are suitable for floor or platform mounting and complete with integral lifting lugs and removable front panels for convenient access to terminals.
  • Transformers terminations rated below 330 Amps are supplied with suitable hardware and lugs for cable connection. Terminations above 330 Amps are supplied with terminal pads only.
  • Primary windings have full capacity taps for supply voltage compensations and split secondaries for flexibility.
  • Class 220 insulation used throughout.
  • CSA certified, File No. LR 34493
  • UL listed, File No. E108255

Available Options

  • Temperature Rise (115°C, 80°C)
  • Other Primary or Secondary Voltages
  • Different Frequency (other than 60Hz)
  • Different Nema Rated Enclosure (2, 3R, 4, 4X, 12, etc)
  • Electrostatic Shield (single, double, triple or multiple/ultra)
  • Custom sizes (specific KVA ratings) /li>
  • Open Type (Core & Coils only)
  • K-Factor Rated (K4, K9, K13, K20, K30)
  • Special Paint/Finish