Eaton N44M28T45 Nonlinear Ventilated Transformer UL Listed
Part Number: N44M28T45
Quick Summary
The Eaton N44M28T45 nonlinear ventilated transformer provides reliable three-phase power distribution for industrial facilities. Operators often contend with heat, harmonics, and thermal limits during peak loads. UL Listed with a 150°C rise and 60 Hz operation, it also features aluminum windings and an electrostatic shield for safe, compliant performance. From a business perspective, this delivers improved reliability and energy efficiency while simplifying installation in demanding power systems. Its K-Factor nonlinear design and WS39 weather shield support robust integration in data centers, manufacturing floors, and critical process plants, delivering value through reduced downtime and predictable operation.
Product Information
Extended Description
N44M28T45 Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 440V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 150°C, 45 kVA, Al windings , Elec. Shield, Frame: 914D, uses WS39
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N44M28T45
UPC
786680068027
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
500 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Coil material
Aluminum
Type
Ventilated transformer
Design
K-13
Frame
914D
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
45 kVA
Phase
Three-phase
Primary voltage
440 V
Secondary Voltage
208Y/120 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS39
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N44M28T45
The K-13 nonlinear transformer design provides targeted harmonic mitigation for systems with significant non-linear loading, reducing voltage distortion and equipment stress. By maintaining stable voltages under fluctuating loads, it can lower cooling demand and improve overall efficiency on motor drives and non-linear loads. The N44M28T45 is a 45 kVA, three-phase unit with a 440 V primary and 208Y/120 V secondary, designed to integrate with common power rails in industrial facilities and data centers. Ventilated construction paired with aluminum windings achieves superior heat dissipation, supporting higher current without overheating. The 150°C rise rating provides a generous thermal margin for peak operation, while electrostatic shielding helps contain EMI and protect downstream electronics. The 914D frame, plus the WS39 weather shield, enables straightforward mounting in switchgear rooms, outdoor enclosures, or restricted plant spaces. Voltage taps offer practical flexibility for site conditions: two taps at +2.5% FCAN and four taps at -2.5% FCBN. This allows operators to compensate for voltage drop, feeder impedance, and transformer regulation variations without reconfiguring wiring. In critical applications such as CNC machines or pumps, this tuning minimizes flicker, improves control performance, and reduces the risk of undervoltage conditions. Compatibility with 440 V primary and 208Y/120 V secondary makes the N44M28T45 a natural fit for existing plant distributions, motor control centers, and panelboards. The ventilated design aids cooling in confined spaces, and the WS39 shielded variant helps meet EMI requirements in sensitive control environments. UL Listed certification confirms conformance to essential electrical safety standards, while robust construction supports long service life in challenging industrial settings. The unit's 60 Hz operation and aluminum coil material reduce copper losses and enable easier maintenance. Overall, this transformer offers reliable power transfer with predictable performance, backed by Eaton's warranty and engineering support.
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FAQs
Key specifications include a 45 kVA three-phase rating, 60 Hz frequency, 440 V primary, and 208Y/120 V secondary. It uses aluminum windings, features an electrostatic shield, and includes taps at +2.5% FCAN and -2.5% FCBN. The unit comes in frame 914D, with a 150 °C rise rating, and is designed for elevated harmonic environments.
Yes, it is UL Listed, confirming compliance with essential electrical safety standards for safety, fire, and insulation integrity. This simplifies procurement and audit processes, supports safer integration in control panels and switchgear, and reduces the need for additional third-party certification during installation.
The WS39 weather shield protects the transformer in outdoor or harsh environments, while the ventilated design promotes convection cooling for higher current loads. When installing, ensure adequate airflow clearance, unobstructed exhaust paths, and compatible mounting in standard enclosures to maximize cooling and service accessibility.
Industries with significant harmonic loads, such as data centers, CNC facilities, and motor drive installations, benefit from the K-Factor nonlinear design. It helps maintain voltage quality, reduces overheating, and supports reliable operation of critical equipment while aligning with common plant voltages (440 V primary, 208Y/120 V secondary).
Eaton provides a one-year limited warranty from installation, or eighteen months from shipment, whichever occurs first. Technical support and documentation are available, with access to datasheets, catalogs, and engineering assistance to aid maintenance planning, spare parts, and long-term ROI on capital projects.