Eaton N48M28T37EE Transformer - UL Listed, NEMA TP-1
Part Number: N48M28T37EE
Quick Summary
The Eaton N48M28T37EE transformer is a reliable, three-phase solution for power conditioning in industrial environments. Designers and maintenance teams struggle with harmonics from non-linear loads and space-constrained installations. UL Listed and NEMA TP-1 compliant, with electrostatic shielding and a robust 150°C rise rating, reinforce safety and reliability across demanding applications. The unit delivers 37.5 kVA at 60 Hz with a 480V primary and 208Y/120V secondary, using an aluminum coil and a compact 912B frame to fit tight service enclosures. Features such as voltage taps and WS38 weather shielding further simplify installation, retrofit, and long-term maintenance for automation systems, motor drives, and control panels.
Product Information
Extended Description
N48M28T37EE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (3-phase), PV 480V, Taps: 2 at +2.5% /4 at -2.5%, SV 208Y/120V, 150°C rise w/ 200°C insulation systeam, 37.5 kVA, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28T37EE
UPC
786680046674
Product Length/Depth
16.5 in
Product Height
30 in
Product Width
23 in
Product Weight
390 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
Aluminum
Frame
912B
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
37.5 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208 Y/120 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS38
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28T37EE
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: K-Factor nonlinear ventilated design. Business Impact: Enhanced tolerance to harmonic currents from VFDs and other non-linear loads, reducing hotspot formation and preserving insulation life. Application: Automation lines, servo systems, and robotic cells where harmonic stress is common. Feature: Three-phase 37.5 kVA rating with 480V/208Y-120V outputs. Business Impact: Efficient, scalable power distribution for control panels, drives, and machine tools, lowering energy waste and simplifying panel design. Application: Manufacturing floors and large machinery installations needing reliable control power. Feature: Taps at 2 at +2.5% and 4 at -2.5%. Business Impact: On-site voltage adjustment to compensate for line drop and feeder variance, reducing the need for external regulators. Application: Long-run feeders and facilities with fluctuating supply voltages. Feature: Electrostatic shielding. Business Impact: Improved EMI/RFI suppression protecting sensitive controls and sensors, which lowers fault rates and extends component life. Application: PLCs, HMI networks, and instrumentation within harsh electrical environments. Feature: Weathershield WS38. Business Impact: Outdoor and harsh-environment suitability, enabling installation in protected outdoor locations and rugged plant areas. Application: Outdoor substations, equipment bays, and exposed service entrances. Feature: 150°C rise rating with 200°C insulation system. Business Impact: Higher thermal tolerance reduces derating in hot operations and supports dense, high-load applications. Application: High-ambient plants, foundries, and automated production lines where temperature rise is a concern.
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FAQs
Plan for a three-phase 480V input with a 208Y/120V output, and ensure adequate cabinet space for a 30 in height, 23 in width, and 16.5 in depth unit weighing 390 lb. Use the WS38 weather shield for outdoor or exposed installations and accommodate the 912B frame within compatible racks or enclosures. Allow space for tap adjustments (+2.5% and -2.5%).
K-Factor nonlinear ventilation analyzes and mitigates heating caused by harmonic currents from drives and non-linear loads. This reduces hotspot formation, extends insulation life, and lowers maintenance downtime. In practice, it supports reliable operation for motor drives, CNCs, and automation equipment without frequent derating or oversized cooling systems.
Yes. The N48M28T37EE features electrostatic shielding and WS38 weather shielding, enabling safer outdoor or rugged indoor installations. Its 150°C rise rating with a 200°C insulation system provides thermal resilience in high-ambient environments. For outdoor use, mount in a protected location or enclosure and use proper spacing for ventilation and service access.
The transformer is UL Listed and NEMA TP-1 compliant, reflecting adherence to recognized electrical safety and efficiency standards. These certifications support installation approvals, warranty considerations, and compatibility with industry safety programs. Always verify site-specific requirements and consult Eaton documentation for warranty terms (1 year from installation or 18 months from shipment).
Industries with rigorous control-power needs, such as automotive manufacturing, automation and robotics, data-center support equipment, and heavy machinery with VFDs, benefit most. The N48M28T37EE provides 37.5 kVA of three-phase power, 480V to 208Y/120V conversion, voltage taps, and EMI protection, enabling reliable control power for PLCs, drives, sensors, and instrumentation.