Eaton N48M28B22I3CUEE Nonlinear ventilated transformer - UL Listed
Part Number: N48M28B22I3CUEE
Quick Summary
Eaton N48M28B22I3CUEE is a nonlinear ventilated transformer used in three-phase power distribution for industrial facilities. Engineers often struggle with harmonics, voltage drift, and space constraints in high-density electrical rooms. UL Listed, a NEMA 2 enclosure, and NEMA TP-1 efficiency ratings provide confidence for compliance and reliable operation in harsh environments. With 225 kVA, a 480 V primary and 208Y/120 V secondary, copper windings, 80 °C rise, and taps at +2.5% and -2.5%, it delivers scalable, efficient power for critical loads.
Product Information
Extended Description
N48M28B22I3CUEE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (3-phase), PV 480V, Taps: 2 at +2.5% /4 at -2.5%, SV 208Y/120V, 80°C rise, 225 kVA, 3-in window, Copper windings, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B22I3CUEE
UPC
786680102691
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
5142 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
Catalog Notes
NEMA TP-1 efficient, 3-inch IR viewing window
Coil material
Copper
Enclosure
NEMA 2
Wiring connection
292A
Type
Nonlinear, ventilated transformer
Frame
919E
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
225 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208 Y/120 V
Temperature rise
80 °C rise
Special features
Electrostatically shielded
Weathershield
WS35
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28B22I3CUEE
K-Factor nonlinear design reduces harmonic currents, improving power quality and extending equipment life in distribution panels. In data centers and automated manufacturing lines, this translates to fewer trips and lower maintenance costs while staying compliant with industry harmonic limits. The three-phase 225 kVA rating, 480 V primary, and 208Y/120 V secondary provide ready compatibility with modern power architectures, enabling smooth voltage regulation and transformation without excessive footprint. Copper windings offer low resistance losses and robust thermal performance, supported by an 80 °C rise and a sturdy NEMA 2 enclosure for wet or dusty environments. The 36.23 in length, 75 in height, and 44.2 in width, combined with a 3-in window and 919E frame, facilitate straightforward installation in standard electrical rooms. Tap adjustments at +2.5% / -2.5% help compensate voltage variances across loads. Weathershield WS35 adds outdoor resilience where needed, while UL Listed and NEMA TP-1 efficiency ensure regulatory alignment and predictable long-term operation.
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FAQs
Plan for a spacious 919E frame footprint with a 3-in window, ensuring adequate clearance for the copper windings and proper ventilation. The NEMA 2 enclosure supports indoor, dusty or damp environments, while a high-weight unit (≈ 5142 lb) requires appropriate rigging and mounting in a reinforced rack or pad. Use the 292A wiring connection and observe the available taps (+2.5% / -2.5%) to maintain voltage accuracy across loads.
The K-Factor nonlinear design addresses harmonic currents by limiting peak harmonic distortion, improving power quality and reducing thermal stress on downstream equipment. This is beneficial in facilities with non-linear loads such as variable frequency drives and power electronics, helping meet IEEE 519 style limits and extending service life.
Yes. The unit is specified for a 480 V primary and a 208Y/120 V secondary in a three-phase configuration, at 60 Hz. This makes it well-suited for facilities that require step-down voltage for control circuits, lighting, and sensitive electronics while maintaining high efficiency and harmonic control.
The transformer is UL Listed, features a NEMA 2 enclosure for rugged indoor use, and complies with NEMA TP-1 efficiency requirements. Catalog notes highlight an efficient design with a NEMA TP-1 profile and a 3-inch IR viewing window for inspection access. These certifications support safety, reliability, and regulatory alignment.
The Eaton N48M28B22I3CUEE is covered under Eaton's policy: one year from installation or eighteen months from shipment, whichever occurs first. Routine maintenance includes monitoring winding temperatures, inspecting the enclosure and seals, and implementing the taps to maintain voltage accuracy during load changes.