Eaton N48M28B45CULS42 K-Factor transformer UL Listed
Part Number: N48M28B45CULS42
Quick Summary
Eaton N48M28B45CULS42 K-Factor nonlinear ventilated transformer powers three-phase facilities with a 480 V input. Engineers often struggle with harmonic distortion, heat, and noise that trigger trips and shorten equipment life. UL Listed certification underscores safety and reliability, while the device meets 60 Hz operation and an 80 °C rise for demanding environments. Designed for robust power distribution, it supports copper windings, electrostatic shielding, and a compact 915D frame to fit modern switchgear. In practice, this means fewer maintenance surprises, easier installation, and predictable performance in industrial automation and data-center environments.
Product Information
Extended Description
N48M28B45CULS42 Eaton: K-Factor nonlinear ventilated transformer K-13, Three-phase, PV: 480V, Taps: 2 at 0.025 FCAN, 4 at -0.025 FCBN, SV: 208Y/120V, 80°C, 45 kVA , Cu windings, Elec. Shield, Frame: 915D
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B45CULS42
UPC
786680026164
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
607 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
Low sound equal to 42 dB
Coil material
Copper
Type
Ventilated transformer
Design
K-13
Frame
915D
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
480 V
Secondary Voltage
208Y/120 V
Temperature rise
80 °C rise
Modification 1
Low sound 42 dB
Special features
Electrostatically Shielded
Weathershield
WS39
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28B45CULS42
Feature: K-Factor nonlinear ventilated design with dedicated cooling paths. Business Impact: Improves tolerance to harmonic content and reduces heat buildup under non-linear loads, increasing equipment longevity. Application: Ideal for panelboards, MCCs, and automation lines in manufacturing environments. Feature: 45 kVA rating with 480 V primary to 208Y/120 V secondary. Business Impact: Supports essential plant loads with minimal voltage drop, improving downstream device performance. Application: Machine controls, drives, and distribution panels in industrial facilities. Feature: Tap changes of 2 at +2.5% FCAN and 4 at -2.5% FCBN. Business Impact: Maintains voltage accuracy during line fluctuations, reducing commissioning time and voltage-related faults. Application: Plant power distribution where supply varies or long feeder runs exist. Feature: Copper windings and electrostatic shield. Business Impact: Enhances efficiency and EMI suppression, protecting sensitive sensors and control electronics. Application: Data centers, robotics cells, and high-precision manufacturing. Feature: Frame 915D with low sound 42 dB and WS39 weather shield option. Business Impact: Simplifies installation in compact enclosures and noise-restricted areas, with optional outdoor protection. Application: Indoor plant racks and outdoor installations in challenging environments.
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FAQs
Check that your system uses a three-phase 480 V primary with a 208Y/120 V secondary, and confirm the frame is suitable for your enclosure (915D). The unit offers copper windings, EFT shielding, and a 60 Hz rating, with taps to accommodate minor voltage variations. The 607 lb weight also informs mounting and support requirements.
The 45 kVA rating defines maximum load, while the K-Factor nonlinear design improves tolerance to harmonic distortion. Tap changes (+2.5% and -2.5% options) help maintain voltage under feeder fluctuations. Copper windings and electrostatic shielding further reduce EMI, preserving control performance in automation equipment.
Yes, with the WS39 weather shield option, the transformer is better protected for outdoor or harsh environments. Its ventilated cooling supports sustained operation at an 80 °C rise, and the rugged 915D frame assists mounting in standard outdoor or semi-exposed enclosures, subject to the weather shield configuration.
The N48M28B45CULS42 carries UL Listed certification, confirming safety compliance for electrical equipment in typical industrial settings. This certification supports reliability and regulatory alignment for installers, plus the unit’s 480 V to 208Y/120 V configuration matches common industrial distribution practices.
With copper windings and robust shielding, maintenance demands are typically low, reducing lifecycle costs. The 1-year Eaton warranty (or 18 months from shipment) provides initial risk coverage. The combination of improved harmonic resilience, low audible noise (42 dB), and reliable 60 Hz operation helps reduce downtime and maintenance visits, delivering faster ROI in automation-heavy facilities.