Eaton N48M47B75CUEE K-Factor Transformer - UL Listed
Part Number: N48M47B75CUEE
Quick Summary
Eaton N48M47B75CUEE K-Factor nonlinear ventilated transformer enables reliable three-phase power distribution for industrial facilities. Nonlinear loads and heat can shorten transformer life; this K-Factor design mitigates heating with enhanced ventilation. UL Listed and NEMA TP-1 compliant ensure safety and efficiency in demanding environments. Its 75 kVA rating, 480 V primary, and 480Y/277 V secondary support a wide range of industrial applications. With copper windings and a rugged 916A frame, it suits automated lines and critical equipment. Complying to NEMA TP-1 efficient notes and UL standards, it helps you meet internal and regulatory requirements while reducing downtime and maintenance costs. For engineers evaluating medium-kVA transformers, this unit combines performance clarity with proven reliability.
Product Information
Extended Description
N48M47B75CUEE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (3-phase), PV 480V, Taps: 2 at +2.5% /4 at -2.5%, SV 480Y/277V, 80°C rise, 75 kVA, Copper windings, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M47B75CUEE
UPC
786680064999
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
918 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
480 V
Secondary Voltage
480 Y/277 V
Temperature rise
80 °C rise
Special features
Electrostatically Shielded
Weathershield
WS19
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M47B75CUEE
Feature: K-Factor nonlinear design targets non-linear loading patterns common with modern drives and power electronics. Business Impact: Reduces hotspot formation and insulation stress, extending transformer life and lowering maintenance cycles. Application: Data centers, robotics cells, and motor drive environments where harmonic content is high. In practice, users report improved uptime and predictable losses despite harmonic currents. Feature: Ventilated construction with an 80 °C rise rating. Business Impact: Enhanced cooling capacity enables higher short-term loading without overheating, improving overall efficiency. Application: Assembly lines and process equipment that operate at peak loads during startup or peak demand periods. Feature: Copper windings and Frame 916A deliver durability and stable magnetizing current. Business Impact: Lower impedance and robust thermal performance translate to lower operating temperatures and longer service intervals. Application: Heavy-duty industrial locations with continuous operation. Feature: Tap changer options: 2 at +2.5% and 4 at -2.5%. Business Impact: Voltage regulation under fluctuating supply conditions, reducing risk to sensitive equipment. Application: Facilities with intermittent voltage swings or long feeders. Feature: Primary 480 V and Secondary 480 Y/277 V configuration. Business Impact: Simplifies integration with common industrial distribution schemes while supporting diverse downstream loads. Application: Industrial plants with mixed 480 V equipment and 277 V devices. Feature: NEMA TP-1 compliant and UL Listed. Business Impact: Meets regulatory and safety requirements, enabling fast procurement approvals and reducing compliance risk. Application: Environments requiring formal certifications for utility, insurance, or customer specifications. Feature: Weathershield WS19 option and electrostatic shielding. Business Impact: Improves outdoor applicability and EMI resilience, reducing enclosure needs and shielding costs. Application: Outdoor installations or facilities with reflective surfaces and complex grounding.
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FAQs
For installation, position the unit on a solid, level base with adequate clearance for cooling airflow and service access. Verify 480 V three-phase supply and 480Y/277 V secondary connections match your panel schedule. Ensure proper enclosure rating and consider the WS19 weathershield option for outdoor or harsh environments. The copper windings and 916A frame support robust operation under continuous load, while the +2.5% / -2.5% taps help manage voltage variances across feeders.
Key specs include a 75 kVA three-phase rating, 480 V primary, 480Y/277 V secondary, and a 60 Hz frequency rating. The unit employs copper windings, a 916A frame, and a temperature rise of 80 °C. Tap settings are 2 at +2.5% and 4 at -2.5%, enabling voltage regulation under loading. It is UL Listed and NEMA TP-1 compliant, underscoring reliability and compliance.
Yes. The transformer features K-Factor nonlinear design specifically intended to handle harmonic-producing loads from modern drives and power electronics. This reduces winding stress and heat buildup, improving reliability and extending service life in facilities with punching machines, CNCs, and rapid motor starters. The ventilated construction enhances cooling during peak harmonic activity.
The unit is UL Listed and complies with NEMA TP-1 for efficiency. Catalog notes emphasize NEMA TP-1 efficiency, and the product is designed to operate safely in demanding environments. These certifications facilitate procurement approvals, insurance compliance, and installation in regulated facilities.
Assess the weight (approximately 918 lb) and floor mounting needs, ensuring structural support for a stable installation. The 75 kVA rating supports medium-load architectures, potentially reducing the number of transformers required downstream. Voltage regulation via taps helps optimize downstream equipment performance, while copper windings improve efficiency and reduce energy losses over the life of the asset, contributing to a favorable total cost of ownership.