Eaton N48M28B75EESS Transformer - UL Listed, NEMA TP-1
Part Number: N48M28B75EESS
Quick Summary
The N48M28B75EESS Eaton transformer is a K-Factor nonlinear ventilated device that stabilizes power for three-phase industrial drives. Customers often struggle with voltage fluctuations, harmonic distortion, and overheating that shorten equipment life and raise maintenance costs. UL Listed and NEMA TP-1 compliant enclosures, along with a Grade 304 stainless steel housing, help you meet regulatory and harsh-environment requirements. In addition to its 75 kVA rating, this unit integrates precise taps (+2.5% / -2.5%) and robust electrostatic shielding for improved power quality. Designed for 480 V to 208 Y/120 V at 60 Hz, it supports dependable operation in factories, data centers, and process environments.
Product Information
Extended Description
N48M28B75EESS 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, 80°C rise, 75 kVA, EE, SS
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B75EESS
UPC
786680063626
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
865 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, Grade 304 stainless steel enclosure
Coil material
Aluminum
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
208 Y/120 V
Temperature rise
80 °C rise
Special features
Electrostatically Shielded
Weathershield
WS19S
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28B75EESS
Feature: K-Factor nonlinear ventilated design. Business Impact: Reduces harmonic stress and manages heat in demanding loads, improving equipment reliability. Application: Drives, servo systems, and mixed-load panels in manufacturing environments. Feature: 75 kVA three-phase rating with 480 V primary and 208 Y/120 V secondary. Business Impact: Provides headroom for critical loads and scalable power conditioning, cutting downtime risk. Application: Industrial controls, automation cabinets, and data-center peripheral power. Feature: Tap changer with 2 at +2.5% and 4 at -2.5% configuration. Business Impact: Enables precise voltage regulation under supply variation, reducing voltage-related outages. Application: Facilities with long feeders or fluctuating incoming voltages. Feature: Electrostatic shielding and stainless steel enclosure (Grade 304) with NEMA TP-1 compliance. Business Impact: Enhances EMI suppression, corrosion resistance, and long-term durability. Application: Outdoor or harsh environments where reliability matters. Feature: UL Listed and 60 Hz operation. Business Impact: Facilitates compliance, simplifies procurement, and standardizes integration across plant-wide power distribution. Application: Electrical rooms, manufacturing floors, and multi-site deployments.
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FAQs
For installation, mount the unit in a compliant enclosure with NEMA TP-1 rating and corrosion-resistant Grade 304 stainless steel as noted. Ensure adequate clearance for heat dissipation given the 80 °C rise, account for the 865 lb weight, and connect the three-phase 480 V primary with the tap options at +2.5% and -2.5%. Verify UL listing compatibility and leave room for field wiring, labeling, and routine maintenance access.
The transformer utilizes a K-Factor nonlinear design paired with electrostatic shielding to limit harmonic currents and reduce EMI. This improves voltage stability for sensitive drives and motors, which translates to longer equipment life and lower maintenance costs. In practice, data centers, CNC machines, and automated lines benefit from cleaner power without additional harmonic filters.
Yes. The unit ships with a Grade 304 stainless steel enclosure and an electrostatically shielded core, plus Weathershield WS19S protection, meeting NEMA TP-1 requirements and UL Listed standards. These features enable reliable operation in challenging environments, including high humidity, dust, or outdoor equipment rooms, while maintaining EMI suppression and corrosion resistance.
Ideal applications include three-phase motor drives, automation panels, data-center peripheral power, and manufacturing lines with medium-load demands. The 75 kVA rating provides headroom for startup currents and transient loads, while the 480 V to 208Y/120 V transformation supports standard plant distributions and easy integration with downstream equipment and controls.
The product carries Eaton’s standard warranty terms (one year from installation or eighteen months from shipment, whichever occurs first). Regular maintenance should focus on enclosure integrity, cooling ventilation, tap connections, and EMI shielding integrity. UL listing and NEMA TP-1 compliance simplify procurement and ongoing compliance across multiple sites, reducing lifecycle risk and support cost.