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Single Phase Dry-Type Low Voltage Distribution Transformers


Compare our standard series of single-phase distribution transformers to other brands on the market.
  • Pays for itself quickly in energy savings. Efficiency well exceeds the guidelines of NEMA's new Premium Efficiency Transformer Program.  
  • 40 to 50% reduction in volume.
  • Weighs 40% less, generating considerable savings in transport and installation costs.
  • Temperature rise at full load is less than 80 C (176 F) allowing use of non-ventilated enclosures.
  • The inherently quiet operation of the toroidal transformers inside the low profile enclosures make Bridgeport Magnetics distribution transformers well suited for interior baseboard installation.
  • Where floor space is at premium cost, the Bridgeport Magnetics distribution transformer enclosures can be easily wall mounted vertically or horizontally.

Dry-type single-phase low voltage (<600VAC) distribution transformers suitable for industrial, healthcare, commercial buildings, shopping malls, schools, theaters, churches and libraries and other applications.


  • Mounted inside of sleek rectangular green epoxy powder coated steel enclosures.

  • Wire termination is with screw-type terminal blocks.

  • Stud-type connectors are optional.  The enclosures have a water tight, hinged, locking door.


Single-Phase Product Specifications

  • Input/output voltages 480VAC, 240V/120V at 60Hz or 1:1 ratios. 
  • Primary taps optional.
  • Power Ratings: 5,000 VA to 37,500 VA

   VA        Catalog          Enclosure  Dimensions                                        
                No.                 Length           Height               
Depth                    Weight
                                      Inches (mm)
  Inches (mm)       Inches (mm)          lbs     Kg 

  5,000        DT-105-XXXX        15.50   (394)     12.35   (315)            7.00     (178)                 53      (24.0)

  10,000      DT-110-XXXX        18.25  (464)      15.50  (394)             8.00     (203)                 83     (37.5)

  15,000      DT-115-XXXX        19.50  (495)      17.50  (445)            8.00    (203)                 102    (46.0)

  25,000       DT-125-XXXX         21.00  (553)     17.50  (445)            8.00    (203)                 175    (79.0)

  37,500      DT-138-XXXX          22.00  (559)     19.00  (483)            8.00    (203)                180    (81.5)

Download the specifications sheet (pdf)

Three-phase distribution transformers are also available.

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