Eaton N48M28F22A Ventilated Transformer - UL Listed
Part Number: N48M28F22A
Quick Summary
N48M28F22A is a nonlinear ventilated transformer designed for reliable distribution from 480 V to 208Y/120 V in industrial facilities. Engineers often confront harmonics, overheating, and space constraints in crowded electrical rooms, and this model addresses those challenges with a K-Factor design and robust cooling. The unit carries UL Listed safety certification and features a framed 918A construction with aluminum windings and an electrostatic shield to support long-term reliability. By pairing voltage flexibility with dependable protection and installation efficiency, it helps ensure uptime, safer operation, and simplified maintenance across mid-sized power-distribution schemes.
Product Information
Extended Description
N48M28F22A Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 115°C, 225 kVA , Al windings, Elec. Shield, Frame: 918A, uses WS34
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28F22A
UPC
786680360756
Product Length/Depth
30.68 in
Product Height
62.18 in
Product Width
31.44 in
Product Weight
1500 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
Model A
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
115 °C rise
Special features
Electrostatically Shielded
Weathershield
WS34
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28F22A
Feature: K-Factor nonlinear design reduces harmonic exposure and improves overall power quality. Business Impact: Minimizes nuisance trips and equipment stress, boosting uptime and extending the life of connected drives and controls. Application: Manufacturing lines with sensitive loads that require stable voltage and harmonic mitigation. Feature: Ventilated cooling supports higher kilovolt-ampere capacity within a compact footprint. Business Impact: Enables greater load handling without oversized enclosures, reducing installation space and cooling requirements. Application: Industrial plants with dense electrical rooms seeking efficient cooling. Feature: Aluminum windings with an electrostatic shield for lower leakage and enhanced safety. Business Impact: Improves protection against parasitic currents and provides better fault isolation, lowering maintenance costs. Application: Outdoor and indoor installations with demanding duty cycles. Feature: Dual voltage taps and precise regulation (2 at +2.5% FCAN, 4 at -2.5% FCBN) for voltage stability. Business Impact: Maintains motor and control voltage under load swings, reducing equipment wear and nuisance tripping. Application: Panel boards and distribution feeders where load variation is common. Feature: Weather shielding WS34 and frame 918A facilitate outdoor-ready installation. Business Impact: Simplifies site preparation and reduces retrofit needs, accelerating project timelines. Application: Outdoor substations and equipment rooms exposed to variable conditions. Feature: UL Listed certification and Eaton warranty support reliability and compliance. Business Impact: Streamlines procurement, ensures conformity to safety standards, and provides predictable service terms. Application: Compliance-driven projects and long-term asset management.
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FAQs
Install the N48M28F22A with proper clearance for ventilation, align mounting to the frame 918A, and connect to a 480 V three-phase supply. Use the 208Y/120 V secondary taps per the +2.5% and -2.5% settings to regulate output. Confirm UL Listed mounting practices and verify enclosure ingress protection and environmental conditions before energizing.
The K-Factor nonlinear design reduces harmonic distortion and improves overall power quality, which minimizes heating and electrical noise in downstream equipment. This translates to fewer nuisance trips, longer motor life, and improved control accuracy for drives and PLCs in demanding industrial environments.
Yes, the N48M28F22A leverages WS34 weather shielding and aluminum windings, supporting outdoor or harsh environment applications when installed with proper enclosures and weather protection. Ensure compliance with local codes and provide appropriate protection against weather exposure where required.
The N48M28F22A carries UL Listed certification, signaling conformance to safety standards for industrial electrical equipment. Always verify local regulatory requirements or customer-specific certifications (such as CE or IP ratings) with Eaton or your specifier to ensure full compliance for your region and application.
Warranty is Eaton’s standard policy (one year from installation or eighteen months from shipment, whichever occurs first). Regular visual inspections, thermal monitoring, and periodic insulation resistance testing are recommended. Maintain clean ventilation paths, confirm tap settings remain within tolerance during load changes, and document maintenance for asset management and ROI tracking.