Eaton N38M28F75CUEE Transformer - UL Listed, K-Factor
Part Number: N38M28F75CUEE
Quick Summary
The N38M28F75CUEE transformer by Eaton delivers robust K-Factor nonlinear ventilation for three-phase power distribution in industrial facilities. Manufacturers often struggle with harmonics, energy waste, and thermal limits that threaten uptime and efficiency. It is UL Listed, NEMA TP-1 compliant, and designed for a 115°C rise with copper windings, ensuring reliability in demanding environments. This solution also supports flexible voltage management with taps and a strong focus on efficiency, helping plants meet regulatory requirements while reducing operating costs through better heat management and copper-wound durability.
Product Information
Extended Description
N38M28F75CUEE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (3-phase), PV 380V, Taps: 2 at +2.5% /4 at -2.5%, SV 208Y/120V, 115°C rise, 75 kVA, Copper windings, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N38M28F75CUEE
UPC
786680076862
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
0.001 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.
Compliances
NEMA TP-1 Compliant
Certifications
UL Listed
Catalog Notes
NEMA TP-1 efficient
Coil material
Copper
Frame
916A
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
75 kVA
Phase
Three-phase
Primary voltage
380 V
Secondary Voltage
208 Y/120 V
Temperature rise
115 °C rise
Special features
Electrostatically Shielded
Weathershield
WS19
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N38M28F75CUEE
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: K-Factor nonlinear ventilated design → Business Impact: mitigates harmonic stress and improves utility compatibility, reducing stray losses and extending equipment life. Application: data centers and process plants where harmonic currents are common and uptime is critical. Feature: 75 kVA three-phase rating with 380 V primary and 208Y/120 V secondary → Business Impact: scalable power isolation and voltage translation that stabilizes downstream equipment, lowering the risk of undervoltage or overvoltage incidents in motor drives and control panels. Application: manufacturing lines and distribution centers needing dependable step-down capability. Feature: Tap settings at +2.5% and -2.5% → Business Impact: precise voltage regulation under variable load, decreasing voltage-related equipment wear and reducing tape adjustment labor. Application: critical plant utilities and UPS-adjacent circuits. Feature: Copper windings and frame 916A with 115°C rise → Business Impact: superior thermal performance and durability, delivering higher continuous-load capability with lower copper loss. Application: harsh environments and outdoor installations where heat rise is a limiting factor. Feature: Electrostatically shielded construction and WS19 weather shield → Business Impact: enhanced safety and reliability in clean-room, outdoor, or dusty environments, minimizing insulation breakdown risk. Application: outdoor substations and controlled environments requiring rugged protection. Feature: Compliance and efficiency promises (NEMA TP-1 efficient, UL Listed) → Business Impact: easier regulatory approvals and reduced lifecycle costs through compliant, efficient power distribution. Application: projects demanding formal certifications and long-term total cost of ownership reductions.
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FAQs
Installation starts with a clear assessment of the service entrance and panel schedules to ensure the 380 V primary aligns with the facility’s feed. Mounting should accommodate the WS19 weather shield if outdoors, use copper conductors for windings as specified, and apply appropriate torque values on the 916A frame bolts. The taps at +2.5% and -2.5% enable voltage regulation under load, so plan for a voltage survey after commissioning to confirm secondary stability and harmonics control. Finally, verify UL Listed labeling and NEMA TP-1 compliance are visible in the installation documentation for future audits.
Key specs include a three-phase configuration with a 75 kVA VA rating, 380 V primary voltage, and 208Y/120 V secondary voltage. It operates at 60 Hz with a copper-windings construction and a 115°C insulation rise. Voltage taps are provided at +2.5% and -2.5% to compensate for voltage drop under load, and the unit is designed as a K-Factor nonlinear ventilated transformer for harmonic-rich environments.
Yes. The transformer’s K-Factor nonlinear design helps manage harmonic currents common in data centers and motor-heavy manufacturing settings. Its 75 kVA rating supports scalable distribution, while UL Listed and NEMA TP-1 compliance ensures regulatory alignment. The copper windings and 115°C rise rating contribute to reliable operation in mission-critical environments, and the electrostatic shielding plus WS19 weather shield enhance reliability in varied installation conditions.
The N38M28F75CUEE is UL Listed and NEMA TP-1 compliant, with NEMA TP-1 efficiency notes in Eaton’s catalog. These certifications indicate adherence to recognized safety and performance standards, simplifying procurement approvals and ensuring compatibility with contemporary electrical codes. The combination supports safer operation, longer life, and reduced risk in regulated facilities such as data centers, healthcare, and industrial plants.
Copper windings deliver lower resistance and improved heat dissipation, which translates to lower copper losses under load and potentially longer transformer life. The electrostatically shielded construction and WS19 weather shield reduce insulation wear and environmental damage, lowering maintenance costs. With voltage taps to maintain stable secondary voltage, you can reduce voltage-related equipment stress and downtime, delivering a favorable total cost of ownership in both new builds and retrofit projects.