Eaton N48M47T33EE Transformer - NEMA TP-1 Efficient
Part Number: N48M47T33EE
Quick Summary
The Eaton K-Factor nonlinear ventilated transformer provides robust power conditioning for three-phase industrial distribution. Many facilities struggle with heat buildup, harmonic distortion, and efficiency losses in crowded switchgear rooms. UL Listed and NEMA TP-1 compliant, with a 150°C rise insulation system, ensure safety and reliability under demanding loads. Designed for 480 V primary and 480Y/277 V secondary, it offers flexible tapping to maintain voltage under fluctuating supply and load. For engineers and procurement teams, this transformer supports compliance programs, reduces downtime, and enables efficient upgrades in data centers or heavy manufacturing facilities.
Product Information
Extended Description
N48M47T33EE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (3-phase), PV 480V, Taps: 2 at +2.5% /4 at -2.5%, SV 480Y/277V, 150°C rise w/ 200°C insulation systeam, 300 kVA, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M47T33EE
UPC
786680044380
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
2563 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
NEMA TP-1 Compliant
Certifications
UL Listed
Catalog Notes
Nema TP-1 efficient
Coil material
Aluminum
Frame
919E
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
300 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
480 Y/277 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS35
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M47T33EE
Feature: K-Factor nonlinear design reduces harmonic currents and improves power quality. Business Impact: Lower overheating risk and extended transformer life, leading to less maintenance and fewer outages. Application: Critical loads in data centers and industrial facilities with notable harmonic content. Feature: Ventilated construction supports a 150°C rise rating. Business Impact: Higher thermal tolerance minimizes derating and allows denser installations with reliable performance. Application: Large switchgear rooms and outdoor sites with variable ambient temperatures. Feature: Primary 480 V and secondary 480 Y/277 V compatibility. Business Impact: Simplified integration with existing power distribution and reduced staging costs. Application: Multi-load plants and OEM systems requiring standard voltage transitions. Feature: Tap adjustments (+2.5% / -2.5%). Business Impact: Precise voltage regulation without extra ballast or converters. Application: Critical loads sensitive to supply variability. Feature: Electrostatically shielded coil and WS35 weather shield. Business Impact: EMI reduction and weather resistance translate to improved uptime and longer service intervals. Application: Outdoor equipment enclosures and harsh environments. Feature: UL Listed and NEMA TP-1 compliant. Business Impact: Streamlined procurement, regulatory assurance, and faster commissioning. Application: Facilities operating under strict safety and efficiency standards.
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FAQs
This unit is designed for standard 480 V three-phase power distribution with a 480 Y/277 V secondary. Plan for suitable mounting, adequate clearance for ventilation, and connection to properly rated busbars. Verify the taps are set to the required +2.5% or -2.5% settings prior to energization, and ensure UL-listed wiring practices and enclosure clearances are maintained for safe, compliant installation.
Key specs include a 300 kVA three-phase rating, 60 Hz frequency, 480 V primary, 480 Y/277 V secondary, and tap changes of two at +2.5% and four at -2.5%. It features a 150 °C rise insulation, aluminum windings, and electrostatic shielding with WS35 weather shielding to support reliable performance in harsh environments.
Yes. The N48M47T33EE supports K-Factor nonlinear design, which mitigates harmonic stresses on the transformer and improves energy quality. Its ventilated construction and protective shielding help maintain reliability in load-dense environments such as data centers, manufacturing plants, and other facilities with harmonic-rich loads.
This transformer is UL Listed and NEMA TP-1 compliant, with catalog notes indicating NEMA TP-1 efficiency. These certifications validate safety, performance, and efficiency standards, simplifying procurement, installation, and regulatory alignment for complex industrial projects.
Regular inspection of connections, cooling pathways, and enclosure integrity is recommended to sustain performance. The K-Factor design and robust insulation reduce downtime risk and extend service life, delivering lower maintenance costs and improved total cost of ownership over the equipment’s life cycle.