Eaton N39M28T49XCU Transformer - UL Listed K-13 Ventilated
Part Number: N39M28T49XCU
Quick Summary
K-Factor nonlinear ventilated transformer from Eaton delivers reliable three-phase power transformation for industrial facilities. Owners and engineers often wrestle with harmonic currents and heat buildup that threaten uptime and equipment life. UL Listed safety certification confirms compliance with industry electrical standards, while copper windings, electrostatic shielding, and a robust frame support demanding environments. With a 150 kVA rating, 400 V primary and 208Y/120 V secondary, this unit also offers voltage-tap adjustment and weather-shield compatibility to protect critical loads. Designed for installation versatility and long service, it helps facilities meet reliability targets while simplifying procurement and maintenance.
Product Information
Extended Description
N39M28T49XCU Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 400V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 150°C, 150 kVA, Cu windings, Elec. Shield, Frame: 917, uses WS34
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N39M28T49XCU
UPC
786680068065
Product Length/Depth
24.67 in
Product Height
56.17 in
Product Width
31.44 in
Product Weight
1812 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
Copper
Type
Ventilated transformer
Design
K-13
Frame
917
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
50-60 Hz
Kva Rating
150 kVA
Phase
Three-phase
Primary voltage
400 V
Secondary Voltage
208Y/120 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 - N39M28T49XCU
Feature: K-Factor nonlinear design targets harmonic currents, reducing overheating and improving overall system reliability. Business Impact: Lower maintenance costs, fewer unplanned outages, and improved equipment life. Application: Suitable for harmonic-rich environments such as PLC racks and motor drives in manufacturing lines. Feature: Ventilated construction with copper windings enhances cooling and electrical performance. Business Impact: Higher continuous rating capability and reduced thermal derating in hot facilities. Application: Heavy industrial plants and outdoor substations where ambient temperatures fluctuate. Feature: Tap settings (+2.5% FCAN, -2.5% FCBN) provide precise voltage regulation. Business Impact: Consistent downstream voltage, minimized equipment stress, and improved control accuracy. Application: Systems with fluctuating loads or alignment with utility voltages. Feature: Electrostatic shielding adds EMI/RFI protection. Business Impact: Cleaner signal integrity for sensitive controls and reduced interference in MCCs. Application: Control cabinets, PLCs, and instrumentation installations. Feature: Weathershield WS34 option supports outdoor or rugged environments. Business Impact: Extended service life, fewer enclosure concerns, and lower protection-related downtime. Application: Outdoor substations and weather-exposed transformer banks. Feature: UL Listed certification confirms safety compliance and utility-grade quality. Business Impact: Simplified procurement, code compliance, and assurance for regulated projects. Application: Industrial facilities requiring certified power distribution equipment.
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FAQs
Plan for adequate clearance around the unit, mount on a solid base compatible with the 917 frame, and ensure proper ventilation and shielding. Connect the 400 V primary to the supply bus and wire the 208Y/120 V secondary to the load centers with correct phase alignment. Utilize the WS34 weather shield for outdoor placements and set taps to match observed voltage conditions. Verify UL Listed compliance during commissioning and document the transformer’s rating (150 kVA) in the electrical drawings.
Its K-Factor nonlinear design is engineered to manage harmonic currents, reducing heat rise and protecting downstream equipment. Copper windings improve conductivity and efficiency, while electrostatic shielding minimizes EMI. The result is improved power quality, higher uptime, and better control performance in facilities with multiple variable-frequency drives or non-linear loads.
Yes. The N39M28T49XCU is available with WS34 weathershield for outdoor installation and features a rugged frame (917) with copper windings for durability. Its 50-60 Hz operation and UL Listed certification support code-compliant use in MCCs and outdoor substations, while the 150 kVA rating covers a wide range of motor and process load requirements.
The transformer is UL Listed, confirming adherence to established electrical safety standards for industrial transformers. This certification simplifies procurement for regulated projects, helps ensure compliance with safety codes, and provides assurance for long-term reliability in mission-critical applications such as manufacturing plants and data centers.
With copper windings and electrostatic shielding, the unit offers robust electrical performance and longevity. The 150 kVA rating supports stable operation under fluctuating loads, while the Eaton warranty (one year from installation or 18 months from shipment) lowers risk during the initial phase. Routine checks should focus on enclosure integrity, connection tightness, and insulation condition to sustain performance.