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Three Phase Dry-Type Low Voltage Distribution Transformers



Compare our standard series of three-phase distribution transformers to other brands on the market.

We offer:

  • 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 three-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 Distribution Transformers are also available

Three-Phase Product Specifications

  • Input/output voltages 480VAC Delta 208V Y/120V, 240V/120V at 60Hz or 1:1 ratios. 
  • Primary taps optional.
  • Power Ratings: 15,000 VA to 112,500 VA three-phase configuration.

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

15,000           DT-315-XXXX          41 (1041)             14  (350)              7  (178)                120     (55)

30,000           DT-330-XXXX          46 (1170)             14  (350)              7  (178)                225     (100) 

45,000           DT-345-XXXX           51 (1290)             17  (430)              8  (200)                270     (120)

75,000           DT-375-XXXX           54  (1370)            18  (470)              9   (250)               385     (175)

112,500        DT-3113-XXXX         59 (1494)             20 (504)             10 (252)                 490     (222)

Click here to download the product specifications (pdf)

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