Eaton N48M28B1516CU Transformer - K-Factor 13
Part Number: N48M28B1516CU
Quick Summary
The Eaton N48M28B1516CU transformer delivers high-efficiency power for industrial distribution panels. Engineers often face DOE efficiency mandates and rising energy costs, plus the challenge of fitting reliable power inside tight spaces. This unit is UL Listed, DOE 2016 Efficient, and housed in a rugged NEMA 2 enclosure, ensuring safe operation in demanding environments. Its K-Factor 13 non-linear design helps minimize harmonics, while copper windings and the FR940 frame deliver durability and predictable performance. With a 15 kVA rating and three-phase 480 V primary to 208Y/120 V secondary, it reduces installation footprint and long-term operational costs, supporting preventive maintenance and compliance programs for industrial facilities.
Product Information
Extended Description
N48M28B1516CU Eaton: Eaton Eaton K-Factor nonlinear ventilated transformer, Copper windings, NEMA 2, FR940, 60 Hz, 220°C, 15 kVA , Three-phase, 480 Delta V, 208Y/120 Vac, NEMA ST-20, 80°C, 15 kVA, 480 Vac-208Y/120 Vac, DOE 2016
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B1516CU
UPC
786680192890
Product Length/Depth
21.13 in
Product Height
36.88 in
Product Width
24.88 in
Product Weight
434 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
Copper
Enclosure
NEMA 2
Wiring connection
283B
Type
Energy-efficient ventilated transformer
Frame
FR940
Insulation
220 °C
Mounting
Floor or wall
Tap size
2 at +2.5%, 4 at -2.5%
Frequency rating
60 Hz
Kva Rating
15 kVA
Volt ampere rating
15 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Sound Level
NEMA ST-20
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
WS58
Eaton's high-efficiency dry-type transformers
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Eaton Specification Sheet - N48M28B1516CU
Feature: K-Factor 13 nonlinear ventilated windings. Business impact: reduces harmonic distortion and improves input power quality for sensitive automation. Application: ideal for PLCs, drives, and control cabinets. Feature: DOE 2016 Efficient performance and UL Listing. Business impact: energy savings and safety compliance across facilities. Application: energy-conscious manufacturing environments seeking long-term operational cost reductions. Feature: NEMA 2 enclosure and FR940 frame with copper windings and 220 °C insulation. Business impact: rugged indoor protection and broad temperature tolerance, extending service life. Application: factory floors and manufacturing cells with dust and heat exposure. Feature: Voltage taps and wiring options. Business impact: precise voltage regulation from 480 V to 208Y/120 V, reducing field rework and ensuring stable loads. Application: distribution panels and motor control centers. Feature: Physical footprint and mounting flexibility. Business impact: easy installation with floor or wall mounting; predictable fit in retrofit and new-build projects. Application: space-constrained industrial installations requiring a robust power source.
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FAQs
The N48M28B1516CU uses a 283B wiring connection and provides voltage taps at +2.5% (two taps) and -2.5% (four taps). This enables precise regulation from a 480 V primary to a 208Y/120 V secondary, suitable for distribution panels and control cabinets. The result is less field rework, faster integration, and improved power stability.
The K-Factor 13 nonlinear ventilated windings are engineered to limit harmonic currents that can distort voltage and cause nuisance trips. This improves power quality for sensitive automation equipment like PLCs, VFDs, and CNCs, especially in busy manufacturing cells where harmonics can propagate across the bus. The result is more reliable equipment operation and reduced maintenance.
Yes. The N48M28B1516CU complies with DOE 2016 efficiency standards (10 CFR Part 431) for dry-type distribution transformers, helping facilities reduce energy use and meet sustainability goals. It also carries UL Listing for safety and durability. The combination supports green initiatives and simplifies procurement for energy-conscious facilities. This aligns with DOE's efficiency criteria for dry-type transformers and ensures in-operation performance, reducing peak demand charges and cooling requirements over the service life.
Consider its dimensions and weight (21.13 in depth, 24.88 in width, 36.88 in height; 434 lb) and its floor or wall mounting capability for space planning. The NEMA 2 enclosure provides indoor protection, while the FR940 frame supports rugged installation. Plan for 3-phase distribution with 480 V input and 208Y/120 V output, plus wiring connection 283B.
Warranty per Eaton policy 25-000 is one year from installation or 18 months from shipment, whichever comes first. This covers manufacturing defects under normal use. For SPARES and field service, Eaton's technical support facilitates commissioning, troubleshooting, and replacement parts, helping minimize downtime in critical automation applications. Customers can also access Eaton's online resources for maintenance best practices and spare parts availability.