Eaton N48M31T49 Nonlinear Ventilated Transformer - UL Listed
Part Number: N48M31T49
Quick Summary
Eaton N48M31T49 is a K-Factor nonlinear ventilated transformer for three-phase power distribution in industrial facilities. Industrial projects often struggle with heat buildup, inrush currents, and cramped electrical rooms that limit uptime. UL Listed certification supports safety compliance, while design features such as K-13 windings and electrostatic shielding enhance reliability under demanding loads. With primary 480 V and secondary 220Y/127 V, and 45 kVA of capacity, this transformer offers scalable protection and predictable regulation, helping reduce maintenance costs. It also integrates with standard automation gear and supports modular expansion, delivering business value for panel builders, OEMs, and end users seeking consistent power for automation and processing lines. Its aluminum windings, WS34 compatibility, frame 917, and warranty support optimize total cost of ownership for industrial installations.
Product Information
Extended Description
N48M31T49 Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 220Y/127V, 150°C, 45 kVA, Al windings, Elec. Shield, Frame: 917, uses WS34
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M31T49
UPC
786680051791
Product Length/Depth
24.67 in
Product Height
56.17 in
Product Width
31.44 in
Product Weight
1227 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.
Certifications
UL Listed
Coil material
Aluminum
Type
Ventilated transformer
Design
K-13
Frame
917
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
45 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
220Y/127 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS34
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M31T49
Feature: K-Factor nonlinear design paired with a three-phase configuration reduces harmonic distortion and improves protection for sensitive automation loads. This translates to fewer nuisance trips and more stable voltages under fluctuating line conditions. Application areas include motor drives, programmable logic controllers, and automated assembly lines in manufacturing facilities. Feature: Ventilated cooling with a 150 °C rise enables higher load tolerance and reduced derating during peak demand, delivering reliable operation in hot environments. This supports continuous manufacturing and processing lines without sacrificing performance. Application: power distribution in motor control centers, presses, and high-demand automation cells. Feature: Aluminum windings and an electrostatic shield lower material costs, improve corrosion resistance, and minimize EMI coupling, boosting overall reliability. Application: data centers, factory floors with heavy electrical noise, and outdoor installations. Feature: Tap settings of two at +2.5% FCAN and four at -2.5% FCBN provide precise on-site voltage regulation, reducing voltage drop and improving load stability. Application: sites with fluctuating utility voltages or long feeder runs. Feature: Weathershield WS34 compatibility protects the unit in challenging environments while maintaining access for service, lowering maintenance downtime. Application: outdoor enclosures, humid plants, and exposed installation sites. Feature: Frame 917 with a 45 kVA rating and 480 V primary / 220Y/127 V secondary supports standardized installation in existing switchgear and MCCs, simplifying procurement and integration. Application: panel builders and OEMs integrating into established electrical architectures.
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FAQs
The N48M31T49 is a three-phase, 480 V primary, 220Y/127 V secondary transformer with a 45 kVA rating and frame 917. Its dimensions align with common MCC footprints, and the WS34 weathershield option supports outdoor or harsh indoor environments. Ensure adequate clearance for ventilation and access to taps (+2.5% FCAN and -2.5% FCBN) for on-site voltage regulation.
Key specs include a 45 kVA rating, 60 Hz frequency, primary voltage 480 V, secondary voltage 220Y/127 V, and taps at 2 at +2.5% FCAN and 4 at -2.5% FCBN. It is a three-phase, ventilated transformer with aluminum windings, electrostatic shielding, and a 150 °C rise. The frame is 917 and it supports WS34 weather protection.
Yes, the N48M31T49 is UL Listed, indicating it has met recognized safety standards for electrical equipment. This certification supports compliance with safety regulations in many industrial environments, simplifies procurement for regulated facilities, and reduces risk during audits and inspections.
This transformer is well suited to motor control centers, automation panels, and processing lines that require stable voltages, reliable operation under load, and effective heat management. The K-Factor nonlinear design, voltage taps, and shielded windings help protect sensitive drives and controls while enabling predictable performance in demanding production environments.
Eaton backs this product with a warranty per policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, rely on its aluminum windings, shielded construction, and WS34 protection to minimize downtime and facilitate service access during routine inspections.