Eaton N43M28T12X K-Factor nonlinear transformer - UL Listed
Part Number: N43M28T12X
Quick Summary
The Eaton N43M28T12X K-Factor nonlinear ventilated transformer conditions three-phase power for industrial distribution. When transformer banks overheat or face harmonic distortion, downtime and maintenance costs rise. UL Listed certification confirms safety compliance for this demanding industrial equipment. Designed for 50–60 Hz operation with a 112.5 kVA rating and 416 V primary, it delivers reliable distribution across 208Y/120 V loads. This combination helps reduce harmonics, improves efficiency, and lowers lifecycle costs in industrial automation environments.
Product Information
Extended Description
N43M28T12X Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 416V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 150°C, 112.5 kVA, Al windings , Elec. Shield, Frame: 916A, uses WS19
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N43M28T12X
UPC
786680053375
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
988 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
916A
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
50-60 Hz
Kva Rating
112.5 kVA
Phase
Three-phase
Primary voltage
416 V
Secondary Voltage
208Y/120 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS19
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N43M28T12X
The K-Factor nonlinear design of the N43M28T12X targets harmonic-rich loads common in modern manufacturing. By matching transformer behavior to distorted waveforms, it minimizes heat rise and circulating currents, delivering more stable voltage under heavy load. The result is reduced transformer stress, longer service life, and lower maintenance costs for critical feeds to presses, robotics, and CNC controllers. With a 112.5 kVA rating and 50–60 Hz operation, it remains a compact option for mid-sized automation panels.Ventilated construction with a 150°C rise rating enables higher cooling capacity in dense panel arrays and outdoor enclosures. Aluminum windings reduce weight and support efficient heat dissipation, while an electrostatic shield lowers EMI in equipment rooms with sensitive sensors. The WS19 weather protection extension extends outdoor installations without compromising ventilation, helping facilities protect transformers against moisture, dust, and temperature swings.Three-phase 416 V primary with 208Y/120 V secondary provides flexible, standard LV distribution for industrial plants. Tap changes include two at +2.5% FCAN and four at -2.5% FCBN, enabling voltage trimming to compensate line drop and sag. This minimizes device undervoltage events and reduces the need for separate voltage regulators, delivering faster commissioning and lower lifecycle costs.Frame 916A and aluminum windings support robust mechanical integrity, corrosion resistance, and easier handling in installation. An electrostatic shield minimizes EMI coupling to nearby equipment, boosting reliability in high-density machinery halls. UL Listed certification ensures safety compliance, a critical criterion for panel builders and end users alike when meeting procurement and installation standards.Applications span data centers, manufacturing lines, and process plants that demand clean, reliable power and harmonic mitigation. This transformer integrates with standard distribution panels, motor control centers, and UPS systems, offering straightforward wiring and scalable deployment across facilities. Its combination of K-Factor performance, voltage adjustability, and rugged protection makes it a practical choice for modern industrial automation.
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FAQs
Yes. The transformer is designed for 416 V primary operation and 208Y/120 V secondary outputs, supporting standard three-phase distribution in industrial facilities. It features aluminum windings, a 916A frame, and taps for voltage adjustment (+2.5% and -2.5%). For installation, ensure suitable panel clearance, proper grounding, and compatibility with WS19 weather protection if installed outdoors.
The K-Factor nonlinear design adapts to distorted waveforms to minimize heat rise and circulating currents, reducing transformer stress and improving efficiency under nonlinear loads. This benefits facilities with heavy motor drives, welders, or other high-harmonic equipment by delivering cleaner voltage to downstream devices and extending transformer life.
Ideal for industrial automation, data centers, and manufacturing environments where reliable power and harmonic mitigation are critical. It supports mid-size loads and can be integrated into motor control centers, distribution panels, and automation racks, offering on-site voltage regulation via taps and robust protection with WS19 weather shielding for outdoor deployments.
UL Listed is the primary certification for this unit, indicating compliance with recognized safety standards for electrical equipment. This certification supports procurement by meeting safety and reliability expectations in power distribution projects and simplifies approval processes for panel builders and facility engineers.
The transformer is covered under Eaton’s warranty policy, offering one year from installation or eighteen months from shipment, whichever occurs first. Regular maintenance should include periodic inspection of winding insulation, cooling system performance, and tap connections to ensure voltage stability and long-term reliability in demanding environments.