Eaton N48M28T3316QI4 K-Factor Transformer - DOE2016
Part Number: N48M28T3316QI4
Quick Summary
Eaton N48M28T3316QI4 K-Factor nonlinear ventilated transformer delivers reliable power for critical industrial controls. This unit addresses the common challenge of maintaining efficiency and thermal performance in high-load environments where transformer overheating and energy waste can impact uptime and operating costs. It carries UL Listed certification and meets 2016 DOE efficiency standards, with a rugged NEMA 1 enclosure and CASE E frame to simplify installation in demanding facilities. The design also targets long service life and easy maintenance, improving uptime and reducing total cost of ownership. For engineers and procurement teams, this transformer pairs industry-leading power management with practical installation benefits for industrial transformer projects.
Product Information
Extended Description
N48M28T3316QI4 Eaton: EATON K-FACTOR NONLINEAR VENTILATED TRANSFORMER DOE 2016, 60 HZ, COPPER, 300 KVA, 3PH, 480V DELTA, 208Y/120V, NEMA ST-20, 150°C RISE, NEMA 1, CASE F, 220°C, 2 AT +2.5% FCAN, 4 AT -2.5% FCBN, RH6
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28T3316QI4
UPC
786689818197
Product Length/Depth
32 in
Product Height
66 in
Product Width
50.5 in
Product Weight
2700 lb
Compliances
DOE2016 Efficient
Certifications
UL Listed
Catalog Notes
10 CFR Part 431 (2016) Efficient
Coil material
Aluminum
Enclosure
NEMA 1
Frame
CASE E
Insulation
220 °C
Tap size
2 AT +2.5% FCAN, 4 AT -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
300 kVA
Phase
Three-phase
Primary voltage
480 V delta
Secondary Voltage
208Y/120 V
Sound Level
NEMA ST-20
Temperature rise
150 °C rise
Efficiency
10 CFR Part 431-2016 (DOE 2016)
Special features
K FACTOR 13 WITH INFRARED INSPECTION WINDOW
Weathershield
RH6
Feature → Business Impact → Application: The K-Factor nonlinear ventilated design improves thermal margin under variable loading, reducing hotspot risk and enabling longer service life in demanding production environments. This translates to fewer unplanned outages and lower maintenance costs, especially in facilities with heavy motor starting and transient loads. Application: automation panels, process lines, and heavy equipment rooms where cooling capacity is a limiting factor. Feature → Business Impact → Application: DOE 2016 Efficient compliance paired with UL Listed certification provides regulatory certainty and energy performance validation. Benefit: lower energy bills and simplified compliance reporting for corporate sustainability programs. Application: energy-conscious manufacturing facilities and data-intensive operations seeking green compliance. Feature → Business Impact → Application: NEMA 1 enclosure with CASE E frame supports rapid indoor installation and compatibility with existing bus duct and switchgear layouts. Benefit: faster project timelines and minimized field modifications. Application: indoor electrical rooms and retrofit projects with constrained space. Feature → Business Impact → Application: 480 V delta primary and 208Y/120 V secondary with 60 Hz operation and 300 kVA rating offers flexible system integration. Benefit: voltage compatibility across plant equipment without additional transformers. Application: multi-volt motor drives, controls, and distribution systems. Feature → Business Impact → Application: Tap settings 2 AT +2.5% FCAN and 4 AT -2.5% FCBN enable precise regulation to maintain sensitive equipment performance. Benefit: tighter voltage control and reduced regulatory risk. Application: critical controls and instrumentation networks. Feature → Business Impact → Application: Aluminum windings, 150 °C rise insulation, 220 °C insulation class provide robust performance in harsh environments. Benefit: improved durability and insulation reliability; Application: high-temperature facilities and dusty production floors. Feature → Business Impact → Application: Infrared inspection window and NEMA ST-20 sound standards support proactive maintenance and quieter operation. Benefit: easier infrared thermography checks and reduced on-site noise. Application: predictive maintenance programs and quiet indoor installations.
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FAQs
For indoor installations, plan for a sturdy, level mount compatible with the CASE E frame and NEMA 1 enclosure. Ensure adequate clearance for access to connections, infrared inspection window, and cooling ventilation. Account for the 2700 lb weight and ensure structural support, plus space for taps (2 AT +2.5% FCAN, 4 AT -2.5% FCBN) and primary/secondary terminations (480 V delta to 208Y/120 V).
Yes. The N48M28T3316QI4 is DOE 2016 Efficient compliant and UL Listed, providing energy savings and certification-backed reliability. This combination supports regulatory reporting, reduces energy waste across peak loads, and facilitates procurement with verifiable performance metrics.
Applications with variable or high transient loads—such as motor drives, automated manufacturing lines, and process control panels—benefit from improved thermal management and voltage stability. The K-Factor design minimizes overheating risk, supports infrared maintenance checks, and extends transformer life in demanding environments.
The unit uses a 480 V delta primary and 208Y/120 V secondary at 60 Hz, 3-phase, 300 kVA. Voltage regulation is supported by taps: 2 AT +2.5% FCAN and 4 AT -2.5% FCBN, enabling precise adjustments without external reactance or autotransformers.
Leverage the infrared inspection window for regular thermal surveys, monitor the 150 °C rise and 220 °C insulation, and schedule preventative maintenance aligned with NEMA ST-20 standards. Routine checks on windings (aluminum), enclosure integrity, and connection torque help sustain efficiency, minimize downtime, and extend service life, protecting total cost of ownership.