Eaton N48M28B7516LS48 K-Factor Transformer - UL Listed
Part Number: N48M28B7516LS48
Quick Summary
Eaton N48M28B7516LS48 is a high-efficiency three-phase transformer for plant power distribution. Owners and engineers often contend with energy waste, noise, and space limitations in retrofits and new builds. This unit meets UL Listed safety, DOE 2016 efficiency, and NEMA 2 indoor protection, ensuring reliable operation in challenging environments. With aluminum windings, a compact footprint, and a 48 dB sound profile, it simplifies installation and reduces ongoing maintenance. By combining efficient performance with rugged enclosure WS60 and a 75 kVA rating, it delivers predictable ROI for OEMs, panel builders, and end users.
Product Information
Extended Description
N48M28B7516LS48 Eaton: Eaton Eaton K-Factor nonlinear ventilated transformer, Aluminum windings, NEMA 2, FR943, 60 Hz, 220°C, 75 kVA , Three-phase, 480 Delta V, 208Y/120 Vac, Low sound 48 dB, 80°C, 75 kVA, 480 Vac-208Y/120 Vac, WS60, 283B, DOE 2016
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B7516LS48
UPC
786680220760
Product Length/Depth
31.5 in
Product Height
51 in
Product Width
34.5 in
Product Weight
1098 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.
Compliances
DOE2016 Efficient
Certifications
UL Listed
Catalog Notes
10 CFR Part 431 (2016) Efficient
Coil material
Aluminum
Enclosure
NEMA 2
Wiring connection
283B
Type
Energy-efficient ventilated transformer
Frame
FR943
Insulation
220 °C
Mounting
Floor or wall
Tap size
2 at +2.5%, 4 at -2.5%
Frequency rating
60 Hz
Kva Rating
75 kVA
Volt ampere rating
75 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Sound Level
48 dB
Temperature rise
80 °C rise
Voltage rating
480 Vac-208Y/120 Vac
Efficiency
10 CFR Part 431-2016 (DOE 2016)
Modification 1
Electrostatic shield
Special features
K-factor 13
Weathershield
WS60
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Eaton Specification Sheet - N48M28B7516LS48
Feature: K-Factor nonlinear ventilated design with aluminum windings. This configuration enhances thermal performance by distributing heat more evenly under varying load, reducing hot spots and improving overall efficiency. In practice, it enables reliable operation in space-constrained control panels and equipment enclosures across manufacturing lines. Feature: DOE 2016 efficiency and UL Listed compliance. Energy costs are lowered while procurement with confidence is improved, and regulatory requirements are met for industrial facilities and data centers. Feature: NEMA 2 enclosure with WS60 weather shield. Provides rugged indoor protection against dust and humidity in factory floors and service bays, reducing downtime and maintenance needs. Feature: Tap regulation and quiet operation. Two taps at +2.5% and four taps at -2.5% offer voltage stability for variable loads, while a 48 dB sound profile supports quieter equipment rooms and control cabinets. Feature: Heavy-duty frame and mounting versatility. FR943 frame supports floor or wall mounting with a footprint that suits compact plant layouts, easing installation and future reconfigurations for OEMs and end users.
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FAQs
Plan for floor or wall mounting using the FR943 frame with the unit positioned in a well-ventilated area. The cabinet footprint is 31.5 in (depth) by 34.5 in (width) by 51 in (height), and the transformer weighs approximately 1098 lb, so arrange for proper lifting gear and support. Ensure ventilation, clearance, and accessibility for taps and wiring (283B).
The N48M28B7516LS48 provides a 480 V primary and 208Y/120 V secondary at 60 Hz, rated for 75 kVA. It includes taps at +2.5% (two positions) and -2.5% (four positions) to accommodate supply variations, enabling voltage stabilization in fluctuating environments and reducing electrical stress on downstream equipment.
This transformer is UL Listed and complies with DOE 2016 efficiency standards, alongside 10 CFR Part 431 for efficiency. The configuration supports indoor use with a NEMA 2 enclosure, making it suitable for factory floors and control rooms while meeting modern energy and safety codes.
K-Factor nonlinear design optimizes magnetic performance under non-ideal loading, improving fault tolerance and short-term impedance handling. Combined with a robust aluminum winding and ventilated cooling, this reduces heat buildup, extends insulation life, and minimizes performance degradation in dynamic manufacturing loads and high-demand control panels.
The unit carries Eaton’s warranty of one year from the installation date or eighteen months from shipment, whichever comes first. Maintenance considerations include periodic insulation checks, fan/ventilation inspection, and verifying the electrostatic shield and taps remain within specification. Also plan for load variations and vibration checks given the heavy FR943 frame and 1098 lb weight.