Eaton N48M31T75CU K-13 ventilated transformer - UL Listed
Part Number: N48M31T75CU
Quick Summary
Eaton N48M31T75CU is a K-13 ventilated transformer engineered for reliable, three-phase power distribution in demanding industrial facilities. This unit helps engineers tackle heat buildup and EMI challenges that can compromise uptime and safety. With a 45 kVA rating, copper windings, and electrostatic shielding, it delivers consistent voltage regulation under load while maintaining tight temperature rise limits. The UL Listed certification provides assurance for safety compliance in critical installations, supporting audits and warranty coverage. In practice, this transformer pairs with standard frame 916A footprints and optional taps to adapt to site voltage variations, delivering installation flexibility and long-term total cost of ownership advantages.
Product Information
Extended Description
N48M31T75CU Eaton: K-Factor nonlinear ventilated transformer K-13, Three-phase, PV: 480V, Taps: 2 at 0.025 FCAN, 4 at -0.025 FCBN, SV: 220Y/127V, 150°C, 45 kVA, Cu windings, Elec. Shield, Frame: 916A
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M31T75CU
UPC
786685221007
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
809 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
45 kVA
Phase
Three-phase
Primary voltage
480 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 - N48M31T75CU
Feature → Business Impact → Application: The K-13 nonlinear ventilated design improves thermal management and fault tolerance, reducing hotspot risk and potential downtime in continuous-operation environments. This translates to higher overall equipment effectiveness (OEE) and reduced maintenance costs for manufacturing lines that demand stable 480 V to 220Y/127 V distribution. Copper windings offer superior conductivity and lower losses, delivering measurable efficiency gains and a cleaner power profile for sensitive drives and controls in plant floors. The electrostatic shield minimizes EMI, enabling reliable operation of nearby automation equipment, sensors, and communication networks in data centers and processing facilities. Tap adjustability (2 at +2.5% FCAN, 4 at -2.5% FCBN) provides on-site voltage fine-tuning without replacing hardware, cutting installation time and inventory costs. Frame 916A compatibility ensures seamless integration with common rack-and-room footprints, while the 809 lb weight supports stable mounting with standard hoisting equipment. These features collectively address common objections about heat, EMI, and installation complexity, delivering a robust solution for industrial power distribution and control systems.
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FAQs
The N48M31T75CU uses Eaton's 916A frame and measures 23.42 in L, 48.56 in H, and 28.22 in W with a weight of 809 lb. This footprint aligns with common enclosures and mounting configurations, enabling straightforward installation using standard hardware and hoisting equipment. Verify clearance for airflow and access to taps during service.
Primary voltage is 480 V, secondary voltage is 220Y/127 V, and it includes taps: 2 at +2.5% FCAN and 4 at -2.5% FCBN. This allows on-site voltage adjustment to compensate for supply variations, minimizing voltage mismatch and improving load performance without replacement hardware.
Yes. The transformer includes an electrostatic shield to reduce EMI, which helps protect nearby automation controls, sensors, and communication lines. Copper windings further improve power quality and reduce stray losses, supporting stable operation of precision equipment in factory floors and control rooms.
The N48M31T75CU is UL Listed, ensuring adherence to recognized safety standards for electrical equipment. This certification supports compliance during audits, end-user safety assurances, and warranty validity, making it suitable for integration into regulated industrial installations and maintenance programs.
With a 45 kVA rating and 809 lb weight, plan for mechanical support and hoist access during installation. The unit's copper windings, shielding, and 150 °C rise enhance reliability and reduce cooling needs, lowering energy and maintenance costs over time. Warranty terms (one year from installation or 18 months from shipment) should be factored into ROI calculations.