Eaton N48M28T22LS50 Transformer - UL Listed
Part Number: N48M28T22LS50
Quick Summary
N48M28T22LS50 is a K-Factor nonlinear ventilated transformer designed for heavy industrial power distribution in manufacturing facilities. Engineers often contend with heat buildup, audible noise, and reliability challenges in compact substations; this unit mitigates those issues with enhanced airflow, aluminum windings, and a shielded core. It carries UL Listed certification, supports 60 Hz operation, and delivers 225 kVA with a 480 V primary and 208Y/120 V secondary, making it suitable for demanding loads. The design emphasizes low sound at 50 dB, robust temperature rise tolerance, and straightforward taps for voltage regulation. By combining these features with Eaton’s warranty and service ecosystem, the transformer reduces downtime and simplifies procurement for facility upgrades.
Product Information
Extended Description
N48M28T22LS50 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, 225 kVA , Al windings, Elec. Shield, Low sound 50 dB
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28T22LS50
UPC
786680027505
Product Length/Depth
30.68 in
Product Height
62.18 in
Product Width
31.44 in
Product Weight
1794 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 50 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
225 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
150 °C rise
Modification 1
Low sound 50 dB
Special features
Electrostatically Shielded
Weathershield
WS34
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28T22LS50
Feature → Business Impact → Application: K-13 design delivers predictable performance under fault or overload conditions, reducing risk of thermal runaway and improving uptime in critical processes. Application: data centers, process lines, and heavy manufacturing, where stable voltage and reliability are non Negotiables. Feature → Business Impact → Application: Three-phase 225 kVA rating supports substantial load transfers, enabling scalable electrical distribution without oversizing components. Application: large plant substations and machine rooms requiring ample headroom. Feature → Business Impact → Application: 480 V primary to 208Y/120 V secondary configuration simplifies integration with common facility power distribution schemes, lowering installation time and spare-part complexity. Application: OEMs and contractors upgrading legacy systems. Feature → Business Impact → Application: Aluminum windings reduce weight and improve heat dissipation, increasing efficiency and easing handling during installation. Application: retrofit projects in congested spaces with strict weight limits. Feature → Business Impact → Application: Electrostatic shield minimizes EMI, protecting sensitive equipment and improving overall plant reliability. Application: robotics cells and control rooms near high-power drives. Feature → Business Impact → Application: Low sound profile of 50 dB enables siting nearer offices and control rooms without compromising operations. Application: hospital, campus, or office-adjacent facilities. Feature → Business Impact → Application: Adjustable taps (+2.5% FCAN, -2.5% FCBN) enable voltage regulation to compensate for line drop and load changes. Application: systems with long feeders or dynamic load profiles.
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FAQs
This model is ideal for large manufacturing facilities, data centers, and process plants where robust, three-phase power distribution is needed. With a 225 kVA rating and 480 V primary to 208Y/120 V secondary, it supports substantial loads while maintaining reliable voltage regulation. The unit’s low noise and shielded design further suit installations near workspaces or offices.
The transformer features taps at 2 positions: two at +2.5% FCAN and four at -2.5% FCBN. Use these taps to compensate for feeder voltage drop and load variations, ensuring stable secondary voltage under varying operating conditions. Follow Eaton’s installation instructions and ensure taps are set with the system powered down and safety protocols observed.
Key specs include a 225 kVA rating, 60 Hz frequency, three-phase configuration, 480 V primary, and 208Y/120 V secondary. The unit utilizes aluminum windings, an electrostatic shield, and provides a noise level around 50 dB. Temperature rise capability is rated to 150 °C, supporting reliable operation in demanding environments.
Yes, the transformer is UL Listed, indicating compliance with electrical safety standards. It is appropriate for industrial power distribution where reliability, controlled noise, and robust construction are required. The combination of K-Factor nonlinear design and ventilated construction supports installations in facilities with stringent safety and performance criteria.
Warranty follows Eaton’s policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, rely on Eaton’s support network and standard service intervals typical for dry-type, ventilated transformers, including periodic inspections, insulation checks, and cooling system verification to sustain performance and longevity.