Eaton N48M28B75EELS47 Nonlinear Ventilated Transformer - UL Listed
Part Number: N48M28B75EELS47
Quick Summary
The Eaton N48M28B75EELS47 nonlinear ventilated transformer provides reliable 480 V to 208Y/120 V power for industrial, three-phase distribution and control applications. Engineers often face noise, heat, and voltage stability challenges in restricted spaces, making a robust solution essential. This unit carries UL Listed and NEMA TP-1 compliance, with a low-sound profile of 47 dB and voltage taps for ±2.5% adjustments, addressing both regulatory and performance demands. Designed for efficient operation in evolving facilities, it supports EE efficiency class operation with aluminum-wound coils and a compact footprint, enabling scalable power distribution while reducing maintenance and lifecycle costs.
Product Information
Extended Description
N48M28B75EELS47 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, LS, 47
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B75EELS47
UPC
786680045653
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
867 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, Low sound equal to 47 dB
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
Modification 1
Low sound 47 dB
Special features
Electrostatically Shielded
Weathershield
WS19
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28B75EELS47
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: K‑Factor nonlinear design enhances fault tolerance and transformer hot-spot management, improving reliability in high‑load cycles and transient events. This reduces unplanned downtime in manufacturing lines and data centers where continuous power quality matters. Application: medium to high‑demand plant sections with sensitive equipment.Feature → Three‑phase 75 kVA rating provides substantial headroom for motor loads and panel banks, improving transient response and system stability. Business impact: fewer parallel units and simplified bus design, lowering total installed cost. Application: machine control panels and distribution rooms in industrial facilities.Feature → 480 V primary / 208 Y/120 V secondary compatibility aligns with standard plant electrical architectures, simplifying integration and spare‑part sourcing. Business impact: faster buildouts and reduced engineering effort. Application: switchgear rooms and process lines requiring reliable step‑down power.Feature → Tap option of +2.5% and -2.5% enables voltage regulation to accommodate voltage dips and feeder variations, reducing nuisance tripping and equipment stress. Business impact: improved uptime and energy efficiency. Application: feeders supplying mixed-load panels and motors.Feature → Low sound level of 47 dB and ventilated design support quieter operation in work areas and restricted spaces, enhancing worker comfort and compliance with noise limits. Business impact: nicer plant environments and easier approvals for workspace installations. Application: light‑duty and mid‑size facilities with open floor layouts.Feature → NEMA TP‑1 compliance and UL Listing provide regulatory assurance for commercial and industrial installations, speeding procurement and reducing audit risk. Business impact: accelerated project timelines and safer, traceable equipment. Application: regulated facilities in manufacturing, data centers, and distribution centers.
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FAQs
For installation, ensure adequate ventilation to support the 80 °C rise rating and confirm a three‑phase 480 V input with a 208Y/120 V secondary. Verify space for the 28.22 in width, 23.42 in depth, and 48.56 in height, and plan for the WS19 weather shield if outdoor or harsh environments apply. Align with NEMA TP-1 and UL Listed requirements to simplify commissioning.
Key specs include a 75 kVA three-phase rating at 60 Hz, primary 480 V, secondary 208 Y/120 V, and taps at +2.5% and -2.5%. The coil is aluminum, frame 916A, with a listed efficiency profile and a 80 °C rise. This enables precise voltage regulation and reliable operation under peak loads in industrial panels.
Yes. The transformer is UL Listed and NEMA TP-1 compliant for efficient, code‑compliant operation. It also features a low sound rating of 47 dB and an electrostatically shielded construction option, which supports stricter noise and EMI requirements commonly found in modern facilities.
Ideal for mid‑to‑high load industrial panels, control centers, machine rooms, and distribution enclosures needing reliable 480 V to 208Y/120 V conversion. Its 75 kVA rating, adjustable taps, and rugged aluminum coil design support motor starting, panel feed, and sensitive equipment where stable voltage and regulated performance matter.
With a 1‑year installation warranty (or 18 months from shipment) and robust cooling, the N48M28B75EELS47 minimizes downtime and maintenance costs. The K‑Factor design reduces fault impact, while the ventilated construction lowers thermal stress, contributing to longer service life and lower total cost of ownership in facilities upgrading their power distribution.