Eaton N48M28T22 Transformer - UL Listed K-13, Three-Phase
Part Number: N48M28T22
Quick Summary
Eaton N48M28T22 Transformer delivers K-Factor nonlinear ventilation for three-phase power distribution in industrial facilities. Engineered to address heat, harmonics, and downtime, it helps maintain continuous operation even under elevated loading. UL Listed safety certification underpins market compliance while the aluminum windings and 150°C rise rating support rugged, long-life performance. For engineers, this unit enables efficient power management, scalable installation, and reliable service in data centers, manufacturing lines, and other demanding process environments. With a 225 kVA rating, 480 V primary and 208Y/120 V secondary, plus selectable taps and a robust frame 923, it adapts to varied substations and ensures consistent performance across load profiles.
Product Information
Extended Description
N48M28T22 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, 225 kVA, Al windings, Elec. Shield, Frame: 923
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28T22
UPC
786680036620
Product Length/Depth
32.65 in
Product Height
57.54 in
Product Width
36.69 in
Product Weight
1710 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
923
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
225 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS37
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28T22
Feature: K-13 K-Factor nonlinear ventilated design. Business impact: effectively manages harmonics and thermal stress, reducing hot spots and extending transformer life. Application: ideal for facilities with harmonic-rich loads, such as CNC machines and drives in manufacturing lines. Feature: Three-phase, 225 kVA rating with 480 V primary and 208Y/120 V secondary. Business impact: supports scalable power distribution for mid-to-large industrial applications with minimal footprint. Application: data centers, industrial plants, process facilities. Feature: Aluminum windings with electrostatic shielding. Business impact: lowers weight and improves EMI performance, safeguarding sensitive equipment. Application: control panels, PLC rooms, and automation cabinets. Feature: Tap changers 2 at +2.5% FCAN and 4 at -2.5% FCBN. Business impact: allows on-site voltage fine-tuning to optimize performance and minimize losses. Application: installation at sites with voltage fluctuations. Feature: Frame 923 and WS37 Weather Shield. Business impact: durable, weather-resistant installation for outdoor or rugged environments. Application: outdoor substations and harsh plant floors. Feature: 60 Hz operation and 150°C rise rating. Business impact: reliable operation under higher ambient temperatures, reducing cooling costs. Application: hot manufacturing areas and data centers with tight thermal budgets. Feature: UL Listed. Business impact: simplifies regulatory compliance and procurement, accelerating project approval. Application: markets requiring standard safety certification.
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FAQs
The N48M28T22 is designed for three-phase service with a 480 V primary and 208Y/120 V secondary. Plan for proper mounting within frame 923, ensure adequate ventilation, and connect taps as specified: 2 taps at +2.5% FCAN and 4 taps at -2.5% FCBN. Verify the enclosure supports the WS37 weather shield if outdoors. Confirm UL Listed compliance for your installation site and follow Eaton’s wiring diagrams/installation guidelines to minimize voltage drop and maintain cooling efficiency.
Key specs include a 225 kVA rating, three-phase configuration, 60 Hz operation, 480 V primary, and 208Y/120 V secondary. The design uses aluminum windings with an electrostatic shield and supports a 150 °C temperature rise. Tap changers provide +2.5% and -2.5% adjustments (2 and 4 taps respectively), and the unit is built in frame 923 with weather protection WS37. These features deliver reliable performance under harmonic loads and high ambient temperatures.
Yes. The transformer’s K-Factor nonlinear ventilation helps manage harmonic content common in data centers and manufacturing environments. The 225 kVA rating supports substantial load while the electrostatic shield and aluminum windings contribute to EMI control and longevity. Its rugged construction, high temperature rise rating, and UL Listed certification make it a practical choice for both data centers and production facilities seeking reliable power distribution.
The N48M28T22 is UL Listed, which covers safety compliance for electrical equipment in many markets. This certification simplifies procurement and regulatory signaling for purchasers. Always verify local regulatory requirements—some regions may require additional certifications. The product also features a weather-shield option WS37 and a robust K-13 design to meet typical industrial safety and performance expectations.
Maintenance for this transformer is typically minimal due to robust construction and sealed design features, but regular checks on cooling pathways, insulation integrity, and tap positions are recommended. The 150 °C rise rating supports operation under higher ambient temperatures, potentially reducing cooling costs. Over time, the reliable performance and UL Listed certification help minimize downtime and extend service life, contributing to favorable return on investment in industrial power infrastructure.