Eaton N29M28T45A K-Factor Nonlinear Ventilated Transformer - UL Listed
Part Number: N29M28T45A
Quick Summary
Eaton N29M28T45A is a K-Factor nonlinear ventilated transformer for robust three-phase power distribution in industrial facilities. Engineers confront harmonics, heat, and space constraints in modern switchgear, and this unit mitigates those with aluminum windings, a 914D frame, and electrostatic shielding. UL Listed certification supports regulatory compliance, while WS39 weather shield and a 150°C rise rating enable reliable operation in challenging environments. The transformer provides 208 V primary and 208Y/120 V secondary with adjustable taps to accommodate supply variation, delivering stable voltages for critical loads. Designed for reliability in manufacturing lines and critical infrastructure, it fits into standard plant spaces and simplifies upgrades, driving lower downtime and a stronger ROI for power management and distribution systems.
Product Information
Extended Description
N29M28T45A Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 208V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 150°C, 45 kVA , Al windings , Elec. Shield, Frame: 914D, uses WS39
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N29M28T45A
UPC
786680014512
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
461 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
914D
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
45 kVA
Phase
Three-phase
Primary voltage
208 V
Secondary Voltage
208Y/120 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS39
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N29M28T45A
With a K-Factor nonlinear design, the N29M28T45A is engineered to handle harmonic currents common in nonlinear loads, reducing stray heating and voltage distortion. The business impact is clearer: fewer nuisance trips, longer equipment life, and improved upstream protection. In practice, this means reliable performance for drives, furnaces, and sensitive electronics in manufacturing lines or data centers. Ventilated construction and a 914D frame deliver superior cooling under high load, translating to higher usable kVA and reduced overheating risk. This improves uptime in hot environments such as steel mills, chemical plants, and packaging operations, while enabling installation in restricted spaces by aligning with standard enclosures. Voltage regulation is supported by taps: 2 at +2.5% FCAN and 4 at -2.5% FCBN, enabling operation across supply variations without external autotransformers, reducing maintenance and labor costs. The electrostatic shielding minimizes EMI and interference with nearby controls and communications, improving signal integrity in PLCs, drives, and telemetry. Aluminum windings keep weight and procurement costs favorable, while the three-phase 60 Hz rating and 45 kVA output align with typical plant distributions. The WS39 weather shield broadens outdoor or harsh-environment installation possibilities, and UL Listed certification confirms compliance for electrical assemblies. Beyond hardware, Eaton’s support ecosystem—including catalogs, datasheets, and training resources—helps engineers specify and install confidently, delivering lower total cost of ownership and predictable lifecycle performance.
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FAQs
The N29M28T45A is a three-phase transformer with a 914D frame and aluminum windings. Connect the primary to 208 V three-phase sources and the secondary to 208Y/120 V bus sections. Use the two +2.5% taps and four -2.5% taps to adjust voltage as supply varies, and ensure the windings are properly shielded to mitigate EMI. Mounting should align with standard enclosures and the WS39 weather shield can be used for outdoor or harsh environments. Follow Eaton’s catalog sheets and installation notes to verify clearances and ventilation for optimal performance.
The transformer employs a K-Factor nonlinear design and electrostatic shielding to limit harmonic currents and associated EMI. This reduces heat, voltage distortion, and nuisance trips in systems with nonlinear loads such as drives and power electronics. With 60 Hz operation and a 45 kVA rating, it supports reliable power distribution for critical equipment while helping facilities stay compliant with standard electrical practice and improve overall system stability.
Industries with significant harmonic loads and sensitive equipment—manufacturing lines, process controls, data centers, and automation-heavy facilities—benefit most. The N29M28T45A’s combination of 208 V primary, 208Y/120 V secondary, 60 Hz performance, and shielding makes it well-suited for panel boards, switchgear upgrades, and distributed power environments where reliability and voltage stability are essential.
The N29M28T45A carries UL Listed certification, supporting regulatory compliance for electrical equipment in many markets. The warranty is Eaton’s standard policy: one year from installation or eighteen months from shipment, whichever occurs first, offering coverage for manufacturing defects and early-life issues while buyers plan preventive maintenance.
The unit’s pre-engineered taps for voltage regulation, robust cooling (ventilated design) and shielded construction simplify panel design and reduce commissioning risks. The WS39 weather shield expands outdoor applicability, lowering enclosure constraints. Together with the UL Listed approval and Eaton support resources, the transformer shortens installation cycles and delivers measurable ROI through reduced downtime, lower maintenance costs, and improved reliability in critical power distribution.