Eaton Transformer N48M31B49CUEE - UL Listed, NEMA TP-1
Part Number: N48M31B49CUEE
Quick Summary
The Eaton K-Factor nonlinear ventilated transformer is a robust solution for 480V to 220Y/127V three-phase power distribution in data centers and industrial facilities. Engineers often battle voltage fluctuations, transformer heating, and maintenance costs from aging assets. This unit is UL Listed and NEMA TP-1 compliant, featuring copper windings and an 80°C rise to tolerate moderate ambient conditions while maintaining performance. With taps at +2.5% and -2.5%, it adapts to voltage swings without compromising protection or life. The design supports scalable, compliant power distribution, offering reliability and interoperability with Eaton’s distribution ecosystem to streamline procurement and maintenance for commercial and industrial environments.
Product Information
Extended Description
N48M31B49CUEE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (3-phase), PV 480V, Taps: 2 at +2.5% /4 at -2.5%, SV 220Y/127V, 80°C rise, 150 kVA, Copper windings, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M31B49CUEE
UPC
786680080524
Product Length/Depth
30.68 in
Product Height
62.18 in
Product Width
31.44 in
Product Weight
0.001 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
Copper
Frame
918A
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
150 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
220 Y/127 V
Temperature rise
80 °C rise
Special features
Electrostatically Shielded
Weathershield
WS34
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M31B49CUEE
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The N48M31B49CUEE delivers a 150 kVA three-phase power rating with a 480 V primary and 220Y/127 V secondary, enabling steady voltage regulation for critical loads in data centers and manufacturing lines, reducing downtime risk. This translates to improved uptime and reduced operational penalties when loads are sensitive to voltage variations. Application: data centers, automated manufacturing lines, and process controls. Feature → Copper windings provide lower copper loss and higher durability compared to aluminum counterparts, resulting in lower operating temperatures and longer transformer life. Business impact: reduced energy waste, lower cooling requirements, and extended asset lifecycle. Application: continuous process plants and high-density power distribution hubs. Feature → TAP size with 2 at +2.5% and 4 at -2.5% enables precise voltage adjustment to accommodate utility swings and on-site generation without hardware changes. Business impact: enhanced voltage stability, fewer protective trips, and simplified maintenance. Application: facilities with distributed energy resources or variable input voltage. Feature → 80°C rise rating and electrostatically shielded construction improve insulation resilience and fault protection, enabling safer operation in warm industrial environments. Business impact: higher reliability under elevated ambient temperatures, lower risk of insulation damage, and easier compliance with indoor/outdoor installation standards. Application: warm plant floors and outdoor substations. Feature → Weathershield WS34 and rugged frame 918A support outdoor and harsh environments, reducing enclosure corrosion risk and enabling flex installation. Business impact: reduced enclosure upkeep, longer service life, and lower total cost of ownership. Application: outdoor panels and semi-enclosed electrical rooms. Feature → UL Listed and NEMA TP-1 efficient catalog notes ensure regulatory compliance and procurement confidence, accelerating project approvals and reducing risk during audits. Business impact: smoother commissioning, faster procurement cycles, and predictable maintenance costs. Application: all industrial power distribution projects requiring certified, efficient transformers.
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FAQs
Installers should plan for a frame compatible footprint (918A), ensure proper enclosure with Weathershield WS34 for outdoor use, and verify copper windings with 80°C rise. Ensure UL Listed and NEMA TP-1 compliance are documented, and connect high-quality primary 480 V and secondary 220Y/127 V circuits with correct tap settings (+2.5% / -2.5%). Adequate clearance for ventilation and access to taps for future voltage adjustments is recommended.
The transformer provides taps at +2.5% and -2.5%, allowing precise voltage regulation to compensate for input swings without compromising protection. With 150 kVA rating and a 480 V primary to 220Y/127 V secondary, it stabilizes critical loads against fluctuations common in industrial environments, reducing nuisance trips and improving process stability.
Yes. At 150 kVA, 3-phase, with copper windings and tight regulation (60 Hz, 480 V to 220Y/127 V), the N48M31B49CUEE is designed for reliable IT and facility loads. UL Listed and NEMA TP-1 efficient ratings support safe, compliant deployment in data centers and other critical operations where uptime is essential.
The transformer is UL Listed and NEMA TP-1 compliant, with an 80°C rise rating and electrostatically shielded construction. These certifications help meet regulatory requirements, simplify audits, and reassure procurement teams about long-term reliability and safety.
The copper-wound design reduces resistive losses, lowering operating temperatures and cooling needs, which translates to energy savings and lower maintenance costs. The unit’s UL/NEMA TP-1 compliance streamlines approvals, while the rugged WS34 weatherproofing decreases enclosure upkeep, collectively contributing to a favorable total cost of ownership over the asset life.