Eaton N44M31T45CU Transformer - UL Listed K-13 Ventilated
Part Number: N44M31T45CU
Quick Summary
Eaton N44M31T45CU Transformer delivers K-Factor nonlinear three-phase voltage transformation for distribution panels and heavy machinery. Facilities struggle with load variations and demanding cooling demands that can push transformers toward higher maintenance costs and outages. UL Listed certification underpins safety and reliability in industrial facilities. With rugged K-13 design, copper windings, and a 45 kVA rating, this unit supports efficient power distribution while meeting tight uptime goals. Designed for data centers, manufacturing floors, and utility-grade equipment, it adapts to voltage swings with selectable taps. The combination of copper windings, electrostatic shielding, and WS39 weather protection helps extend service life in harsh environments. By supporting precise voltage regulation and quick tap adjustments, it reduces troubleshooting time and accelerates project timelines.
Product Information
Extended Description
N44M31T45CU Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 440V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 220Y/127V, 150°C, 45 kVA, Cu windings, Elec. Shield, Frame: 915D, uses WS39
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N44M31T45CU
UPC
786680071348
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
580 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
915D
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
440 V
Secondary Voltage
220Y/127 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS39
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N44M31T45CU
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: K-13 K-Factor nonlinear design and three-phase operation optimize performance under diverse loads. Business Impact: The nonlinear characteristic reduces overheating risk, stabilizes output voltage, and lowers maintenance frequency across fluctuating industrial profiles. Application: Ideal for distribution panels in manufacturing plants, process industries, and heavy equipment facilities where voltage accuracy matters. Feature: Copper windings with electrostatic shielding inside a rugged 915D frame, and high-grade insulation. Business Impact: Higher conductivity and EMI protection translate to improved efficiency and safer operation of nearby controllers. Application: Data centers and industrial plants with strict EMI requirements benefit from improved protection and reliability even in high-density equipment racks. Feature: Ventilated design paired with WS39 weather shield for enhanced cooling. Business Impact: Superior cooling supports sustained loads up to the 150 °C rise rating and reduces thermal cycling wear. Application: Outdoor installations or harsh environments where ambient temperatures challenge transformers can benefit from extended life. Feature: Tap changer offering 2 taps at +2.5% and 4 taps at -2.5% for voltage regulation to compensate for line impedance and voltage drop along feeders. Business Impact: Enables precise compensation for line drops and feeder losses, lowering voltage excursions across connected equipment across multiple panels and long feeders. Application: Buildings and facilities with long feeders, variable loads, or fluctuating input voltages benefit from quick adjustments without replacing gear. Feature: 45 kVA rating, 60 Hz operation, 440 V primary, 220Y/127 V secondary in a compact 22 by 29 by 39 inch frame. Business Impact: Balances power capability with installation footprint, easing integration into existing layouts and reducing space costs. Application: Industrial service panels, motor control centers, and substations where dependable power transformation is required. Feature: UL Listed certification and standard Eaton warranty provide formal safety compliance and documented traceability for audits. Business Impact: Reduces procurement risk, supports regulatory audits, and ensures timely vendor support if service is needed across multiple sites and facilities. Application: Projects requiring certification trails and predictable maintenance funding benefit from a proven supplier and long-term availability across global supply chains.
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FAQs
For installation, ensure adequate space around the 915D frame and plan for the 580 lb weight. Verify proper clearances for ventilation, access to taps, and ease of wiring to 440 V primary and 220Y/127 V secondary circuits. Secure mounting with appropriate hardware and ensure WS39 weather shield if installed outdoors.
The K-13 nonlinear design accommodates non-linear loads by reducing temperature rise and maintaining voltage regulation under fluctuating demand. This minimizes hot spots and extends winding life, improving reliability where motor drives and power electronics introduce harmonic content.
Yes. With 45 kVA capacity, three-phase 440 V input, and 220Y/127 V output, it suits server rooms, IT racks, and plant floors. Copper windings and shielding reduce EMI, while the ventilated design supports sustained loading and efficient cooling in demanding environments.
The unit is UL Listed, indicating safety compliance for industrial installations. Eaton provides a standard warranty policy (25-000) covering post-sale support and warranty duration, aiding procurement decisions and reducing risk for maintenance planning.
Benefits include improved uptime due to robust cooling and voltage regulation, reduced maintenance outages thanks to shielding and high-quality copper windings, and a reliable supply chain backed by UL certification and Eaton’s warranty, contributing to a favorable total cost of ownership for regulated facilities.