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Schneider Electric Square D Transformers - PartsHnC

Square D Transformers

If you're in the market for a transformer to supply power throughout your building, the Square D Transformer from Schneider Electric could be just what you need. This transformer provides multiple voltages, which can make your system more flexible and efficient.

Low-voltage transformers have several benefits that you can use in your system.

  • By providing source impedance to the system, they can also lower common overcurrent at normal voltages. 
  • With an internal magnetic circuit, low-voltage transformers can reduce harmonics and enable system grounding closer to the load, which lowers capacitive noise. 
  • They can be made for whatever output voltage you need.

Of course, there are also a few disadvantages to consider. Low-voltage transformers can reduce the overall efficiency of your system because of internal losses within the transformer. If they are placed indoors and in the HVAC system, they can potentially increase the building's temperature.

Schneider Electric's Square D transformers are optimized for performance, with several components designed to minimize losses and maximize efficiency. 

  • Schneider electric transformers are is the only company to use the specific wire configurations used in the coil's design, and computer-controlled winding machinery reduces unpredictability throughout the winding process. 
  • Aluminum conductors are standard, but copper conductors are available as a factory option.
  • The insulation system consists of a varnish substance, an air gap spacing, a conductor wrap or coating, and layer insulation.
  • For the average temperature rise, hot spot, and ambient temperatures, it is UL listed for a particular maximum temperature. Transformers in the Schneider Electric EXN family have an insulation system rated for 428°F (220°C) with a maximum average temperature rise of 302°F (150°C).
  • High-grade grain-oriented silicon steel laminations with low hysteresis, low eddy current losses, and high magnetic permeability are used to construct the core of EXN Transformers.
  • The computer-aided process allows the design to keep the magnetic flux densities well below the saturation point. The laminations are carefully and evenly stacked via distributive gap laminations, then clamped together to ensure an efficient magnetic circuit while providing a quiet quality offering of low voltage transformers.
  • The terminals are sized to allow the lugs to align with all corresponding Schneider Electric equipment (such as circuit breakers, switches, panelboards, switchboards, etc.). 
  • The terminal positioning separates the Primary and Secondary terminals and meets the National Electrical Code® (NEC®) minimum wire bending requirements. Lugs are not shipped with the transformer, allowing the installer the flexibility to order what is needed to meet any distribution system requirements. 

Note that both mechanical and compression lug kits are available from Schneider Electric. Terminals are standardized to National Electrical Manufacturers Association® (NEMA®) two-pole pad dimensions. The Square D transformer selector assists in choosing the right transformer for specific electrical applications, ensuring proper voltage and power distribution.

Square D current transformers are crucial components in electrical systems, enabling the safe measurement and monitoring of electrical currents, making them an integral part of power management and safety.

As an authorized supplier of Square D transformers, PartsHnC can help you find the right transformer for your needs. Contact us today to learn more about our selection and to place an order.


What causes a voltage drop in a Square D transformer?

Voltage drop in a Square D transformer is caused by resistance in the transformer's windings or in the connecting wires. This can result in a decrease in the output voltage, which can cause equipment to malfunction or fail.

How can I diagnose a short circuit in a Square D transformer?

To diagnose a short circuit in a Square D transformer, use a multimeter to check the resistance between the transformer's terminals. If the resistance is zero or very low, there is a short circuit. When maintaining electrical systems, having access to Square D replacement parts is essential for quick and efficient repairs, helping to keep operations running smoothly.

What should I do if I have a faulty connection in a Square D transformer?

If you have a faulty connection in a Square D dry type transformer, inspect the connections and repair or replace any damaged or corroded components. It is important to do this promptly, as faulty connections can cause the transformer to overheat or fail.

Schneider Electric Square D Manufacturers Other Categories

Square D Parts Square D Circuit Breakers Square D Safety Switches Square D Furnace Parts
Square D Sensors Square D Controls Square D Pressure Switch  


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