Eaton N48M28B49A K-Factor Transformer - UL Listed
Part Number: N48M28B49A
Quick Summary
The Eaton N48M28B49A K-Factor nonlinear ventilated transformer provides reliable three-phase power conditioning for large industrial facilities. When power quality or thermal limits threaten uptime, this unit helps reduce voltage sags, harmonic distortion, and heat-related outages. UL Listed safety certification ensures regulatory compliance, while its electrostatic shield and WS34 weather shield support safer, longer installations. With 150 kVA capacity, dual primary and secondary voltages, and selectable taps, it adapts to evolving plant loads without extra hardware. This combination drives improved reliability, simplified procurement, and lower operating costs for process control rooms, automation panels, and manufacturing lines.
Product Information
Extended Description
N48M28B49A Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 80°C, 150 kVA , Al windings, Elec. Shield, Frame: 918A, uses WS34
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B49A
UPC
786680370250
Product Length/Depth
30.68 in
Product Height
62.18 in
Product Width
31.44 in
Product Weight
1500 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
Catalog Notes
Model A
Coil material
Aluminum
Type
Ventilated transformer
Design
K-13
Frame
918A
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
150 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
80 °C rise
Special features
Electrostatically Shielded
Weathershield
WS34
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28B49A
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: K-13 nonlinear K-Factor design. Business Impact: Reduces harmonic heating and voltage distortion in power systems, improving efficiency and extending equipment life. Application: Ideal for plants with nonlinear loads in data centers or automation facilities. Theoretical advantage: better reliability with fewer outages. Feature: Ventilated transformer frame 918A with aluminum windings. Business Impact: Superior cooling and durability in hot environments, enabling longer service intervals and reduced maintenance. Application: Indoor or outdoor installations using WS34 weathershield for protection. Feature: Primary 480 V and secondary 208Y/120 V with tap adjustments. Business Impact: Voltage regulation to match load conditions without external reactors or boosters. Application: Control panels and MCCs facing supply variations; tap settings at +2.5% and -2.5% support precise voltage control. Feature: Electrostatic shield and UL Listed certification. Business Impact: EMI suppression and validated safety compliance, easing regulatory audits and installation approvals. Application: Sensitive control systems near motor drives and PLCs. Feature: 150 kVA rating and 60 Hz operation. Business Impact: Ample headroom for moderate to large workloads while maintaining efficiency. Application: Industrial processes, manufacturing lines, and process control environments. Feature: Robust warranty and build data. Business Impact: Reduced risk through coverage aligned with installation timelines, supporting long-term ROI expectations. Application: Procurement and maintenance planning for OEMs and distributors seeking dependable transformer assets.
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FAQs
Install in a spacious electrical room or outdoor enclosure with WS34 protection for outdoor exposure. Provide proper ventilation for the ventilated design, and ensure adequate clearance around the 918A frame for heat dissipation. Use correct mounting hardware and verify wiring conforms to 480 V three-phase safety guidelines and local codes.
The K-13 nonlinear K-Factor indicates enhanced tolerance to harmonic currents, reducing transformer overheating and voltage distortion. In practice, this means better tolerance for non-linear loads such as drives and welders, improving feeder reliability and extending equipment life without additional harmonic mitigation devices.
Yes. With a 150 kVA rating, 480 V to 208Y/120 V outputs, and a ventilated design, it supports critical power distribution in automation panels and data centers. Features like the electrostatic shield reduce EMI, while taps provide voltage flexibility to accommodate fluctuating loads typical in these environments.
This transformer is UL Listed, confirming compliance with established safety standards. The UL certification helps streamline approvals for industrial installations and ensures adherence to recognized electrical safety practices in controlled environments.
Warranty terms are Eaton Selling Policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. This aligns with typical industrial asset lifecycles and reduces total cost of ownership by providing long‑term protection against defects while enabling predictable maintenance budgeting.