Eaton N48M28B12LS45 K-Factor Ventilated Transformer UL
Part Number: N48M28B12LS45
Quick Summary
Eaton N48M28B12LS45 is a K-Factor nonlinear ventilated transformer for industrial power distribution. In demanding facilities, harmonic and thermal stress in switchgear and control panels can shorten equipment life and drive wider maintenance costs; this transformer helps manage those risks with a purpose-built vented design. Key certifications include UL Listed, ensuring regulatory compliance and safe procurement, while the unit’s low sound emission supports siting in noise-sensitive environments. With robust performance features and installation flexibility, this solution delivers reliable power delivery for manufacturing lines, data centers, and critical distribution panels, helping you meet uptime targets and reduce total cost of ownership.
Product Information
Extended Description
N48M28B12LS45 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, 112.5 kVA , Al windings, Elec. Shield
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B12LS45
UPC
786680025273
Product Length/Depth
30.68 in
Product Height
62.18 in
Product Width
31.44 in
Product Weight
1517 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
918A
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
112.5 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
80 °C rise
Modification 1
Low sound 45 dB
Special features
Electrostatically Shielded
Weathershield
WS34
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28B12LS45
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: K-Factor nonlinear ventilated design provides superior harmonic handling and thermal management, reducing overheating risks and improving equipment life in high-harmonic environments. This translates to lower maintenance intervals and improved reliability for panel boards and MCCs in manufacturing lines. Feature → Business Impact → Application: Aluminum windings with an electrostatic shield deliver improved efficiency and EMI protection, resulting in cleaner power delivery and reduced risk of control-system interference in sensitive automation applications. This is particularly valuable in machine centers and data halls where precise voltage regulation supports consistent process performance. Feature → Business Impact → Application: 112.5 kVA three-phase rating with 480 V primary and 208Y/120 V secondary supports medium-load distribution, enabling compact, scalable configurations in switchgear and substations without overbuilding infrastructure. Feature → Business Impact → Application: Tap changes (2 at +2.5% FCAN, 4 at -2.5% FCBN) provide automatic or easy-voltage adjustments to minimize voltage drop and maintain equipment performance across fluctuating loads, enhancing reliability in panel enclosures and nearby transformers. Feature → Business Impact → Application: Low sound at 45 dB and WS34 weather shield enable versatile siting, including outdoor installations and noise-sensitive facilities like hospitals or data centers, reducing enclosure footprint and installation constraints. Feature → Business Impact → Application: UL Listed certification frames procurement expectations and compliance posture for regulated industries, supporting faster project approvals and risk reduction in multi-vendor integrations.
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FAQs
The transformer is UL Listed and designed for both indoor and outdoor use with WS34 weather shielding, making it suitable for factory floors, outdoor switchgear, and data centers. Its low 45 dB sound level also supports placement in noise-sensitive areas without requiring excessive sound attenuation measures.
Key specs include a 112.5 kVA rating, three-phase configuration, 480 V primary, 208Y/120 V secondary, 60 Hz frequency, 80 °C temperature rise, aluminum windings, and an electrostatic shield. Taps are 2 at +2.5% FCAN and 4 at -2.5% FCBN, enabling voltage adjustments to maintain steady operation under voltage fluctuations.
K-Factor nonlinear design minimizes additional heating from non-linear loads, reducing thermal stress on windings and insulation. This leads to lower maintenance costs, extended transformer life, and more stable voltages in facilities with harmonics from drives, CNC machines, and other non-linear equipment.
The N48M28B12LS45 is UL Listed, ensuring conformity with widely recognized safety standards. This certification supports procurement in regulated industries and simplifies approval processes for projects involving electrical distribution and control equipment.
Expect reduced maintenance intervals due to robust design, improved reliability from effective heat management, EMI shielding, and lower noise installation. The combination of UL Listing, weather shielding, and a proven three-phase 112.5 kVA rating helps justify total cost of ownership in mid-size power distribution upgrades and long-life automation projects.