Eaton N48M28T75 K-Factor Transformer - UL Listed
Part Number: N48M28T75
Quick Summary
The Eaton N48M28T75 is a K-Factor nonlinear ventilated transformer for three-phase industrial power distribution. In modern facilities, non-linear loads from drives and controls stress systems, creating overheating risks and longer downtime. UL Listed certification supports safety, traceability, and regulatory compliance, while aluminum windings and an electrostatic shield boost longevity. Its 480 V primary and 208Y/120 V secondary, combined with a 75 kVA rating and 60 Hz operation, streamline spares, service planning, and maintenance workflows for mission-critical equipment. Designed for challenging environments with a 150 °C rise, this transformer supports reliable uptime and predictable performance across installations with limited space or harsh conditions.
Product Information
Extended Description
N48M28T75 Eaton: K-Factor nonlinear ventilated transformer K-13, Three-phase, PV: 480V, Taps: 2 at 0.025 FCAN, 4 at -0.025 FCBN, SV: 208Y/120V, 150°C, 75 kVA, Al windings, Elec. Shield, Frame: 916A
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28T75
UPC
786680036125
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
723 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
Aluminum
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
75 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 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 - N48M28T75
Feature → Business Impact → Application: The K-Factor nonlinear ventilated design manages non-linear loads typical of modern industrial systems, reducing thermal hotspots and improving equipment life, which translates to lower maintenance costs and less unplanned downtime in manufacturing lines. In practice, this means more consistent voltage regulation and fewer nuisance trips on automated equipment, supporting higher overall line efficiency. Feature → Business Impact → Application: With a 75 kVA rating and three-phase 480 V primary to 208Y/120 V secondary configuration, it supports critical loads across distribution cabinets and plant floors, enabling streamlined spare parts inventories and faster MTTR (mean time to recover) during outages. Feature → Business Impact → Application: Dual taps (+2.5% and -2.5%) provide precise voltage adjustments to accommodate load swings without compromising protection schemes, reducing warranty service calls and extending transformer life in dynamic environments. Feature → Business Impact → Application: Aluminum windings and an electrostatic shield improve fault isolation and thermal performance while reducing weight and maintenance downtime, ideal for retrofit projects in space-constrained electrical rooms. Feature → Business Impact → Application: The WS19 weather shield option enables outdoor or harsh-environment installations without additional enclosure costs, delivering time and cost savings during site deployment. Feature → Business Impact → Application: UL Listed certification underpins compliance with safety standards and facilitates procurement processes in regulated industries, supporting risk mitigation and supplier qualification.
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FAQs
The N48M28T75 accommodates a three-phase 480 V primary feeding 208Y/120 V secondary, with 60 Hz operation. It uses aluminum windings in a 916A frame and includes taps for voltage adjustments (+2.5% and -2.5%). For fitment, ensure adequate ventilation, access for maintenance, and space for the 723 lb unit; WS19 weather shield is available for outdoor use.
Key specs include a 75 kVA rating, three-phase configuration, primary 480 V, secondary 208Y/120 V, 60 Hz frequency, and a 150 °C temperature rise. The design features aluminum windings, electrostatic shielding, and a 916A frame, with two taps at +2.5% and four taps at -2.5% to accommodate voltage variations.
Yes, the N48M28T75 is UL Listed, indicating compliance with recognized safety standards for electrical equipment. This certification supports safer operation, product traceability, and streamlined procurement processes in regulated industries, reducing the compliance burden for installers and system integrators.
The ventilated design and aluminum windings reduce heat buildup in compact electrical rooms, while the WS19 weather shield option enables outdoor use without additional enclosures. The 916A frame and weight of 723 lb necessitate appropriate lifting and mounting provisions, but the unit’s integrated shielding and taps simplify wiring and commissioning in space-constrained environments.
The product follows Eaton’s 25-000 warranty policy, offering one year from installation or eighteen months from shipment, whichever occurs first. Routine maintenance should focus on ensuring proper ventilation, inspecting the electrostatic shield, and verifying tap connections during scheduled intervals to preserve performance and avoid unexpected downtime.