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DOE 2016 Energy Efficient EX Transformers

An evolution to our Energy Efficiency transformers that are compliant to the new DOE 2016 efficiency standards.

End of Commercialization

The new Square EX Low Voltage Transformers comply with the new DOE 2016 efficiency plus provide customers with the following National Electric Code (NEC) updates: (1) 450.9 Ventilation, (2) 450.10 Grounding, (3) 450.11 Markings, and (4) 450.12 Terminal wiring space.

Schneider Eletric
DOE 2016 Energy Efficient EX Transformers
  • Features

    The 2005 Energy Act set Low Voltage Distribution Transformers efficiency levels for all products manufactured after January 1, 2007, and also authorized the Department of Energy (DOE) to analyze and mandate levels for all Distribution Transformers.  Following its analysis, the DOE has chosen to increase the levels of efficiency on Low Voltage Transformers for all units manufactured after January 1, 2016.  (10 CFR 431.192 April 2013).

    This change requires manufacturers to redesign their products to comply with the new levels.  The changes in 2007 were mostly core material, whereas this next level of efficiency has affected core configuration, core material, and coil sizes.  The efficiency requirements also went from three significant digits to four significant digits allowing less manufacturing variability between units.

    To further improve the new EX Transformer design, we also incorporated contractor feedback based on the 2007 EE Transformers which includes the following:

    • Same conductor range for the Source and Load equipment as the Transformer, making the installation of the complete Square D package easier and faster
    • Space-saving design allows transformers to be mounted within ½-inch of the wall reducing the footprint in the owner’s equipment room
    • Shipping carton is fortified to protect unit top and side to reduce damage


    As the world leader in automation and electricity management, Schneider Electric can help you optimize your energy costs while enhancing your facility's performance, reliability, safety and ease of use. Our package of solutions includes energy conservation, management and monitoring products, systems and services. All designed to help reduce your facility's energy consumption. Learn more at Square D Lean Tools found on the additional links tab.  


    Add the EX transformer in all applications where the Energy Efficient transformer is present
    • Building Management and Security
    • Data Centers, Networks and Secure Power
    • Electrical Distribution
    • MV Distribution and Energy Automation
    • Solar

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