Eaton N48M28T41EE Transformer - NEMA TP-1 Efficient
Part Number: N48M28T41EE
Quick Summary
The Eaton N48M28T41EE transformer is a K-Factor nonlinear ventilated transformer designed for robust three-phase power distribution in demanding industrial environments. Engineers often confront thermal challenges and space constraints when integrating high-kVA equipment into compact switchgear and panels. This unit is NEMA TP-1 compliant and UL Listed, with electrostatic shielding and WS35 weather protection to help ensure reliability in harsh conditions. With a 480 V primary and 208Y/120 V secondary, plus adjustable taps, it delivers consistent performance while supporting energy efficiency and lifecycle cost reductions for plant-wide applications.
Product Information
Extended Description
N48M28T41EE 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, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28T41EE
UPC
786680093784
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
3010 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
920
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
400 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208 Y/120 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS35
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28T41EE
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: K-Factor nonlinear ventilated design improves fault tolerance and thermal management, reducing overheating risk and enabling higher continuous loading in dense electrical rooms; use in factory automation and process plants to maintain stability under variable loads. Feature → 3-phase 480 V primary to 208Y/120 V secondary output delivers compatible power for distribution panels and motor control centers, simplifying integration and spare-part planning in manufacturing lines. Feature → 150°C temperature rise rating with EE insulation supports demanding environments and extended insulation life, lowering maintenance outages in high-load applications. Feature → Taps at +2.5% and -2.5% provide voltage regulation during fluctuating feeds, improving downstream equipment performance in facilities with variable supply. Feature → Aluminum coil construction and a robust Frame 920 frame confer mechanical strength for retrofit or new installations with limited mounting space. Feature → Electrostatic shielding and WS35 weathershield enable outdoor or harsh-environment deployment and enhanced fault isolation, boosting uptime. Feature → UL Listed and NEMA TP-1 compliant status reduces procurement risk and accelerates compliance audits, supporting faster project approvals and warranty validation.
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FAQs
Plan for a three-phase installation with a 480 V primary supply and a 208Y/120 V secondary load. Ensure adequate clearance and ventilation for the 150°C rise rating, use WS35 weather shielding in outdoor or harsh environments, and confirm the 920 frame fits the designated equipment rack or enclosure. Verify tap settings (+2.5% / -2.5%) for voltage regulation under fluctuating input.
The transformer provides 400 kVA at 60 Hz in a three-phase configuration, with a 480 V primary and 208Y/120 V secondary. It features aluminum coil construction, a 150°C rise, and taps at +2.5% and -2.5%. These specs enable reliable load support, tighter voltage control, and compatibility with standard industrial distribution panels while meeting NEMA TP-1 and UL requirements.
Yes. The unit includes WS35 weather protection and electrostatic shielding, which enhances reliability in harsh environments and outdoor installations. The rugged aluminum coil and Frame 920 construction further support durable operation under mechanical and thermal stress, reducing maintenance frequency in challenging factory floors or outdoor substations.
This transformer is UL Listed and NEMA TP-1 compliant, with catalog notes indicating NEMA TP-1 efficiency. These certifications simplify procurement and auditing, support safer operation within electrical codes, and align with utility and builder requirements for efficient, compliant power distribution in commercial and industrial facilities.
By combining high efficiency, robust thermal performance, and versatile taps for voltage regulation, the N48M28T41EE reduces energy losses, minimizes downtime from overheating, and lowers installation risk with UL/NEMA-compliant design. The WS35 protection and electrostatic shielding extend life in tough environments, delivering predictable maintenance costs and favorable long-term ROI in high-demand plants.