Eaton N48M28T75LS45 Transformer - UL Listed, 75 kVA
Part Number: N48M28T75LS45
Quick Summary
Eaton K-Factor nonlinear ventilated transformer delivers reliable 75 kVA power conditioning for data centers and industrial facilities. Engineers often struggle with heat buildup, noise, and voltage anomalies in compact switchgear and control rooms, which can hinder uptime and safety. This transformer is UL Listed and designed for three-phase operation with a 480 V primary and 208Y/120 V secondary, delivering robust performance under demanding load swings. By combining aluminum windings, electrostatic shielding, and a conservative 150°C rise, it reduces audible noise to 45 dB and maintains thermal margins. In practice, integrating this unit can simplify procurement, improve compliance with safety standards, and support scalable power distribution for evolving automation needs.
Product Information
Extended Description
N48M28T75LS45 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, 150°C, 75 kVA , Al windings, Elec. Shield
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28T75LS45
UPC
786680026294
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
1 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 45 dB
Coil material
Aluminum
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
75 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
150 °C rise
Modification 1
Low sound 45 dB
Special features
Electrostatically Shielded
Weathershield
WS39
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28T75LS45
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: K-Factor nonlinear ventilated design supports harmonic-rich, nonlinear loads; Business Impact: reduces overheating and improves efficiency under dynamic industrial loads; Application: ideal for data centers, machine automation, and panel assemblies needing stable voltage with lower thermal stress. Feature: 480 V primary and 208Y/120 V secondary in a three-phase layout; Business Impact: seamless integration with standard North American power systems; Application: achievement of reliable power conditioning in manufacturing lines and control rooms. Feature: Tap changes 2 at +2.5% FCAN and 4 at -2.5% FCBN; Business Impact: precise voltage regulation during startup transients and load swings; Application: critical for sensitive automation drives and PLC systems. Feature: Aluminum windings and electrostatic shield; Business Impact: improved thermal performance and EMI containment, reducing maintenance downtime; Application: tougher environments and tighter installation envelopes. Feature: 75 kVA rating with 60 Hz operation and a 150°C rise; Business Impact: dependable capacity planning with clear overload margins; Application: scalable distribution for industrial controls and process equipment. Feature: Low sound 45 dB and WS39 weather shield option; Business Impact: quieter installations and outdoor/semienclosed deployments without performance loss; Application: data centers, control rooms adjacent to occupants, and outdoor switchgear bays.
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FAQs
The N48M28T75LS45 is designed for three-phase 480 V input with a 208Y/120 V secondary. Ensure proper panel clearance, use aluminum windings wiring, and connect to your 60 Hz distribution network. Verify tap settings (2 at +2.5% and 4 at -2.5%) during commissioning to maintain voltage accuracy under load swings. Follow UL Listed installation guidelines and Eaton’s catalog recommendations for mounting, shielding, and cooling.
Key specs include a 75 kVA rating, 480 V primary, 208Y/120 V secondary, 60 Hz operation, three-phase configuration, and a 150 °C temperature rise. It features taps at +2.5% FCAN and -2.5% FCBN, aluminum windings, and an electrostatic shield. The unit is designed for nonlinear loads with a K-Factor, delivering stable voltage and controlled harmonic heating.
Yes. The N48M28T75LS45 is well-suited for data centers, automated manufacturing, and equipment rooms with harmonic-rich loads. Its K-Factor nonlinear design, low noise (44–45 dB), and robust EMI shielding make it ideal where reliability, temperature control, and quiet operation matter. The 75 kVA rating supports scalable power distribution for evolving automation needs.
UL Listed indicates compliance with safety standards for electrical equipment, supporting safer installation and ongoing maintenance. For compliance teams, this reduces the need for additional safety certifications in many North American projects. Always verify local codes and ensure proper installation, grounding, and clearances to maintain UL-listed status over the transformer’s life.
Use the voltage taps to minimize voltage fluctuations during startup and peak loads, reducing stress on downstream equipment. Aluminum windings and shielding lower EMI and thermal losses, contributing to longer life and reduced maintenance. Pairing with the WS39 weather shield and low-noise operation helps meet installation requirements in constrained spaces, accelerating deployment and improving overall return on investment.