Eaton N44M31T75CU Transformer - K-13 Ventilated, UL Listed
Part Number: N44M31T75CU
Quick Summary
The Eaton N44M31T75CU transformer powers critical three-phase loads with a K-Factor nonlinear ventilation design for demanding plants. It helps prevent heat buildup and harmonic heating that challenge uptime and efficiency in modern electrical systems. This unit carries UL Listed certification, reflecting safety compliance for industrial environments and critical control applications. By leveraging copper windings, a robust frame, and an electrostatic shield, the design enhances reliability and longevity. In practice, the transformer supports scalable power distribution with predictable regulation and easier field maintenance, aligning with plant-wide reliability programs and energy-management initiatives. This makes it well-suited for manufacturing floors, data centers, and large equipment installations where consistent voltage quality matters.
Product Information
Extended Description
N44M31T75CU Eaton: 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, 75 kVA, Cu windings, Elec. Shield, Frame: 916A, uses WS19
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N44M31T75CU
UPC
786685267098
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
849 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
916A
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
75 kVA
Phase
Three-phase
Primary voltage
440 V
Secondary Voltage
220Y/127 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS19
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N44M31T75CU
Feature → The K-Factor nonlinear ventilated design provides improved thermal management and harmonic handling, reducing overheating risk. Business Impact → This translates to longer service life, lower maintenance costs, and fewer unplanned outages. Application → Ideal for heavy manufacturing lines and automated facilities where constant power quality is critical. Feature → 75 kVA three-phase capacity with a 440 V primary and 220Y/127 V secondary improves system sizing and reduces the need for mid-cycle upgrades. Business Impact → Enables scalable power distribution, improved fault tolerance, and optimized footprint in control rooms and switchgear enclosures. Application → Suitable for motor drives, conveyors, and multi‑zone plant distributions. Feature → Copper windings paired with an electrostatic shield boost efficiency and EMI protection. Business Impact → Lower I2R losses and reduced interference with sensitive controls and communication systems. Application → Beneficial in data-intensive environments and critical instrumentation areas. Feature → Tap settings (2 at +2.5% FCAN, 4 at -2.5% FCBN) enable precise voltage regulation under supply variations. Business Impact → Stable equipment performance, improved control accuracy, and minimized voltage fluctuations. Application → Useful where variable mains and long feeders affect downstream devices. Feature → Weathershield WS19 and rugged frame 916A provide outdoor and harsh-environment compatibility. Business Impact → Simplified installation, higher reliability in outdoor installations, and reduced enclosure requirements. Application → Outdoor substations, industrial campuses, and process facilities with variable ambient conditions.
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FAQs
Plan for a footprint compatible with the 23.42 in length, 28.22 in width, and 48.56 in height, and account for a 849 lb weight. Connect to 440 V primary and 220Y/127 V secondary wiring, with 60 Hz operation. Ensure adequate ventilation and clearance for the WS19 weather shield and access to the 916A frame. Verify UL Listed compliance and note the ± taps for voltage adjustment during commissioning.
The unit is a 75 kVA, three-phase transformer rated for 60 Hz operation. Primary voltage is 440 V, secondary voltage 220Y/127 V. It uses copper windings and features an electrostatic shield, a 916A frame, and WS19 weather shield. Temperature rise is specified at 150 °C with taps at +2.5% FCAN and -2.5% FCBN to aid voltage regulation.
Yes. Its 75 kVA three-phase capacity, K-Factor nonlinear ventilation, copper windings, and EMI protection via an electrostatic shield make it well suited for data centers and manufacturing lines where stable voltage, reduced harmonic heating, and reliable uptime are critical. The WS19 weather shield also supports outdoor or rugged indoor installations, enhancing deployment flexibility.
The N44M31T75CU carries UL Listed certification, indicating adherence to established electrical safety standards for industrial transformers. This supports compliance with common safety codes in North America and provides assurance for integration into regulated facilities. Always verify regional requirements and maintain documentation to ease audits and maintenance planning.
Expect ROI from reduced downtime due to improved thermal management, stable voltage regulation, and lower EMI-related issues in sensitive equipment. Maintenance focuses on regular inspection of cooling, windings, and shielding, plus periodic verification of tap settings and enclosure integrity. Eaton’s 25-000 warranty policy offers coverage timing aligned with installation and shipment milestones, supporting total cost of ownership considerations.