Eaton N48M28B45A Transformer - UL Listed K-Factor 45 kVA
Part Number: N48M28B45A
Quick Summary
The Eaton N48M28B45A transformer delivers reliable power conditioning for three-phase industrial systems, ideal for data centers and manufacturing floors. In practice, voltage swings and harmonic distortion can shorten equipment life and drive up maintenance costs. This unit carries UL Listed safety certification and is built as a K-Factor nonlinear ventilated transformer to better manage harmonic currents while delivering consistent voltage under varying loads. The design also incorporates an electrostatic shield and WS39 weather protection to reduce EMI and protect the windings in harsh environments. By combining a robust 45 kVA rating with adjustable taps and durable aluminum windings, this transformer supports safe installations, easier commissioning, and lower total cost of ownership in mission-critical applications.
Product Information
Extended Description
N48M28B45A 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 , Al windings, Elec. Shield
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B45A
UPC
786680370106
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
480 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
914D
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
Special features
Electrostatically Shielded
Weathershield
WS39
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28B45A
Feature: K-Factor nonlinear design provides superior harmonic handling. Business Impact: improves power quality, reduces equipment stress, extends motor life. Application: ideal for VFDs, data centers, and mixed-load industrial facilities. Feature: 45 kVA three-phase rating with 480 V primary and 208Y/120 V secondary. Business Impact: supports critical loads with stable voltage and scalable capacity, enabling reliable circuit protection and fewer outages. Application: plant feeders, panel boards, and UPS interfaces. Feature: Tap size capability—2 taps at +2.5% FCAN and 4 taps at -2.5% FCBN. Business Impact: precise voltage matching to fluctuating supply and load conditions, reducing transformer losses and thermal stress. Application: facilities near grid disturbances or long feeder runs. Feature: Aluminum windings and electrostatic shield. Business Impact: improved thermal performance and EMI suppression, contributing to safer, quieter equipment rooms. Application: environments with sensitive instrumentation and control systems. Feature: Weathershield WS39, frame 914D, and dimensions 22 in L × 29 in W × 39 in H with 480 lb weight. Business Impact: rugged installation in cramped or high-traffic spaces with predictable mounting footprints and service access. Application: industrial cabinets, electrical rooms, and outdoor-rated enclosures where weather protection is needed. Feature: 60 Hz operation, 80 °C rise, UL Listed certification, aluminum coil construction, and 25-000 warranty policy. Business Impact: compliance with safety standards, predictable maintenance windows, and long-term ownership cost reductions. Application: general purpose and mission-critical electrical distribution in manufacturing and data infrastructure.
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FAQs
Yes. The N48M28B45A is a three-phase, 480 V primary transformer with a 208Y/120 V secondary designed to fit standard industrial switchgear and panel boards. Its 914D frame and 22x29x39 in footprint support common mounting arrangements, while the 480 lb weight necessitates proper lifting and secure anchoring. Ensure clear ventilation and access for taps and connections during commissioning.
Key specs include a 45 kVA rating, 60 Hz operation, primary voltage of 480 V, secondary voltage of 208Y/120 V, three-phase configuration, and aluminum windings with an electrostatic shield. Tap options are 2 at +2.5% FCAN and 4 at -2.5% FCBN. The transformer has an 80 °C rise and is UL Listed, with WS39 weather protection.
Yes. The N48M28B45A employs a K-Factor nonlinear design (K-13) that attenuates harmonic currents, improving power quality and reducing EMI. This is particularly beneficial for data centers and facilities with heavy VFD and power electronics loads, contributing to higher reliability, less equipment stress, and better uptime.
The transformer carries UL Listed certification for electrical safety. It also carries a warranty under Eaton's policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. This combination supports compliance, predictable maintenance planning, and reduced ownership risk for mission-critical deployments.
Plan for the 22 by 29 by 39 inch footprint and 480 lb weight to ensure proper mounting and handling. Use WS39 weather shield and ventilated design for outdoor or harsh environments, and provide adequate clearance for thermal dissipation and access to taps (2 at +2.5% and 4 at -2.5%). Aluminum windings and electrostatic shielding aid EMI control during integration.