Eaton N48M28T09 Transformer - K-Factor UL Listed
Part Number: N48M28T09
Quick Summary
The Eaton N48M28T09 transformer provides reliable power conditioning for three-phase industrial control panels. Engineers often confront harmonics and heat from nonlinear loads, risking voltage stability and equipment wear; this K-Factor ventilated design helps maintain performance under demanding duty. UL Listed certification underpins safety and reliability, while aluminum windings and an electrostatic shield add robust protection. With a 9 kVA rating, 480 V primary and 208Y/120 V secondary, it fits typical control cabinet footprints and supports long service life. Designed for rugged environments, the WS38 weather shield and frame 912B enable straightforward installation and dependable operation across repeatable production cycles. In short, this transformer combines mature electrical performance with practical installation advantages for modern automation equipment.
Product Information
Extended Description
N48M28T09 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, 9 kVA, Al windings, Elec. Shield, Frame: 912B
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28T09
UPC
786680053351
Product Length/Depth
16.5 in
Product Height
30 in
Product Width
23 in
Product Weight
201 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
912B
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
9 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS38
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28T09
Feature: K-Factor nonlinear capability (K-13) is specifically tuned to manage harmonic currents from nonlinear loads. Business Impact: reduces voltage distortion and insulation stress, helping maintain power quality and extend equipment life. Application: ideal for drives, CNCs, and other equipment in manufacturing lines where nonlinear loads are common. Feature: Ventilated design delivering a 150 °C rise tolerance. Business Impact: enhanced cooling under peak loads minimizes thermal hotspots and improves reliability. Application: harsh industrial environments and panels with limited space for external cooling. Feature: Tap settings with 2 taps at +2.5% FCAN and 4 taps at -2.5% FCBN. Business Impact: tighter voltage regulation and simpler on-site adjustments to accommodate supply variance. Application: control cabinets and distribution panels in facilities with fluctuating input voltages. Feature: Aluminum coil windings. Business Impact: lighter weight and efficient thermal conduction, contributing to faster installation and lower standing losses. Application: installation in restricted spaces or where weight is a consideration. Feature: Electrostatic shield and frame 912B with Weathershield WS38. Business Impact: improved fault tolerance and environmental protection, reducing maintenance needs. Application: outdoor-rated or shop-floor installations exposed to dust or moisture. Feature: 9 kVA, three-phase, 480 V to 208Y/120 V, 60 Hz. Business Impact: predictable, scalable power for mid-size automation loads while maintaining compatibility with common industrial distribution schemes. Application: machine rooms, control panels, and feeder assemblies in manufacturing environments.
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FAQs
The transformer uses a standard 912B frame with dimensions of 16.5 in (depth) x 30 in (height) x 23 in (width) and weighs 201 lb. Mounting should follow typical control cabinet or equipment rack practices, using the frame’s mounting pattern and allowing ventilation space for WS38 shielding. Ensure adequate floor or rack clearance for access and cooling.
K-Factor 13 indicates enhanced tolerance to harmonic currents typical of nonlinear loads such as drives and power electronics. This reduces voltage distortion and insulation stress, improving reliability and lifespan of connected equipment. The design supports stable operation in panels where harmonic currents would otherwise degrade power quality.
Yes. It is a three-phase transformer with a 480 V primary and 208Y/120 V secondary rated at 9 kVA, suitable for distribution to equipment in data centers and control rooms. Its ventilated design and shielded construction help manage heat and minimize interference in mission-critical environments.
The N48M28T09 carries UL Listed certification, providing traceable compliance with recognized electrical safety standards for panel installations. This helps streamline approvals in manufacturing and automation facilities and supports consistent, safety-focused deployment in electrical distribution.
Expect robust service life from the K-Factor design, aluminum windings, and electrostatic shield, which reduce insulation stress and wear. With a 9 kVA rating and durable frame/Weathershield, maintenance intervals can be extended, downtime minimized, and life-cycle costs kept predictable. A standard one-year warranty offers early protection, while field performance supports steady production availability.