Eaton N48G28B09CU Transformer - UL Listed, K-13 Design
Part Number: N48G28B09CU
Quick Summary
N48G28B09CU transformer provides K-Factor nonlinear ventilation for three-phase power distribution in industrial plants. Engineers wrestle with overheating and voltage drift when space is limited and downtime is costly. UL Listed safety certification, K-13 design, and copper windings help deliver reliable performance across demanding environments. In practice, this transformer enables consistent voltages, scalable capacity, and easier service in control rooms and switchgear. Designed for 60 Hz operation, 9 kVA rating, and a 480 V to 208Y/120 V secondary, it supports modern equipment, harmonics mitigation, and long-term reliability for manufacturing, data centers, and process environments. Its modular taps and robust copper windings support quick field adjustments and durable operation in 24/7 production settings.
Product Information
Extended Description
N48G28B09CU Eaton: Eaton K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at -5% FCBN, SV: 208Y/120V, 80°C, 9 kVA, Cu windings, Elec. Shield, Frame: 912B, uses WS38
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48G28B09CU
UPC
786680058837
Product Length/Depth
16.5 in
Product Height
30 in
Product Width
23 in
Product Weight
225 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
Copper
Type
Ventilated transformer
Design
K-13
Frame
912B
Tap size
2 at -5% FCBN
Frequency rating
60 Hz
Kva Rating
9 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
80 °C rise
Special features
Electrostatically Shielded
Weathershield
WS38
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48G28B09CU
Feature: K-Factor nonlinear transformer design (K-13) minimizes harmonic distortion and improves overall power quality. Business Impact: reduces overheating risk and extends component life in drives and PLCs, lowering maintenance costs. Application: ideal for controls racks and motor-heavy environments where non-linear loads are common. Feature: Ventilated cooling with 80 °C rise capability. Business Impact: maintains voltage stability under higher ambient temperatures or brief overloads, boosting uptime. Application: continuous operation in manufacturing lines and data centers with variable loads. Feature: Three-phase 9 kVA, 480 V primary to 208Y/120 V secondary, 60 Hz. Business Impact: simplifies panel design, reduces wiring complexity, and delivers reliable step-down for auxiliary systems. Application: plant distribution, machine controls, and instrumentation networks. Feature: Tap changers 2 at -5% FCBN. Business Impact: on-site voltage regulation to compensate for feed variations, minimizing equipment flicker and faults. Application: sites with voltage drift or long cable runs. Feature: Copper windings with electrostatic shield and WS38 weather shield, frame 912B. Business Impact: durable construction, EMI suppression, and weather resistance support longer service life and quieter operation. Application: indoor control rooms or outdoor installations with protected mounting. Feature: Warranty and certifications. Business Impact: reduces procurement risk with a 1-year minimum warranty (or 18 months from shipment) and UL Listed safety compliance. Application: procurement packages for industrial facilities seeking compliant, reliable transformers.
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FAQs
The N48G28B09CU features a 912B frame with exacting dimensions (16.5 in depth, 23 in width, 30 in height) and a 225 lb weight, requiring careful handling with suitable lifting equipment. Plan for adequate ventilation and clear access for both wiring and taps. Ensure primary connections to 480 V and secondary outputs to 208Y/120 V meet local code requirements and that the WS38 weather shield and electrostatic shielding are properly installed for EMI mitigation.
This unit provides a 9 kVA rating at 60 Hz, with copper windings and a K-Factor nonlinear design to manage harmonic currents common in drives and PLC-fed equipment. The dual primary/secondary voltages support flexible integration into plant distribution, and the -5% FCBN taps offer voltage adjustment to maintain stable outputs despite feed variations.
K-13 denotes a nonlinear, K-Factor optimized transformer architecture that limits harmonic heating and reduces waveform distortion. This translates to cooler operation, longer insulation life, and improved reliability for equipment sensitive to power quality, such as CNC drives, robotics, and automation controllers operating under heavy load or with non-linear loads.
The transformer includes an electrostatic shield to minimize capacitive coupling and EMI, along with copper windings for robust thermal performance. The WS38 weather shield provides environmental protection for outdoor or harsh indoor installations, while UL Listed certification confirms compliance with safety standards for electrical equipment in industrial settings.
Eaton backs this transformer with a warranty of one year from installation or eighteen months from shipment, whichever occurs first, ensuring coverage against manufacturing defects. The product is UL Listed, supporting regulatory compliance and safer integration into commercial and industrial power distribution systems.