Eaton N43M28T75X Transformer - K-Factor Nonlinear
Part Number: N43M28T75X
Quick Summary
Eaton N43M28T75X transformer delivers reliable three-phase power conversion for industrial facilities facing harmonic-rich loads. When harmonics spike, engineers wrestle with overheating, reduced efficiency, and shielding challenges. UL Listed certification underpins safety and compliance; the K-13 ventilated design incorporates an electrostatic shield to protect sensitive equipment in demanding environments. The WS19 weather shield and aluminum windings contribute to rugged, long-life operation, while 150°C rise tolerance supports continuous service. This model also offers tap adjustability and broad compatibility, delivering business value through reliable power conditioning and simplified procurement for industrial plants.
Product Information
Extended Description
N43M28T75X 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, 75 kVA, Al windings , Elec. Shield, Frame: 916A, uses WS19
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N43M28T75X
UPC
786680068102
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
778 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
75 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 - N43M28T75X
Feature: K-Factor nonlinear ventilated transformer design. Benefit: Better handling of harmonic currents with reduced overheating and thermal stress, improving system reliability. Application: data centers, manufacturing lines, and process industries with non-linear loads. Feature: 75 kVA three-phase configuration. Benefit: Scales to mid-sized load centers while maintaining voltage stability, reducing equipment footprint and capital cost per kW. Application: motor drives, panel boards, and critical control rooms. Feature: Primary 416 V to Secondary 208Y/120 V with taps (2 at +2.5% FCAN, 4 at -2.5% FCBN). Benefit: Precise voltage regulation under varying line conditions, minimizing equipment stress and downtime. Application: facilities with fluctuating upstream voltage or long feeders. Feature: Aluminum windings, electrostatic shield, and 916A frame. Benefit: Lower winding losses, EMI/RFI protection, and robust mechanical integration for harsh environments. Application: industrial plants needing EMI protection and durable enclosures. Feature: WS19 weather shield and ventilated design. Benefit: Enhanced protection against dust, moisture, and elevated ambient temperatures, improving uptime. Application: outdoor installations and dusty factory floors. Feature: 150°C temperature rise rating. Benefit: Higher tolerance to transient overloads and peak demand, supporting reliability during startup surges. Application: continuous operation in demanding automation cells. Feature: UL Listed certification. Benefit: Clear safety and compliance signals for procurement and regulatory audits. Application: global manufacturing and maintenance programs. Feature: 1-year warranty (or 18 months from shipment). Benefit: Reduced risk and predictable maintenance planning. Application: project budgeting and after-sales support.
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FAQs
Plan for proper ventilation around the ventilated core and ensure clearance for the WS19 weather shield. Mount the unit on a rigid base with adequate ambient airflow, connect the 416 V primary and 208Y/120 V secondary per the manufacturer wiring diagram, and verify the 916A frame fits your enclosures. Use the taps to compensate for voltage variations on long feeders.
The K-Factor nonlinear design minimizes voltage distortion and reduces thermal stress when harmonic currents are present. This improves efficiency, extends winding life, and lowers the risk of overheating in non-linear load scenarios such as drives and rectifier systems. The result is more stable voltage at critical equipment like PLCs and intelligent motor controllers.
Yes. The transformer is designed for three-phase operation with a 416 V primary and a 208Y/120 V secondary, making it suitable for data centers and IT-leaning industrial spaces. The aluminum windings and electrostatic shield support EMI control, while the taps help maintain voltage during feed fluctuations, aiding critical power reliability.
The transformer is UL Listed, signaling compliance with established electrical safety standards. This certification supports procurement in many regions and simplifies regulatory reviews. For multi-regional deployments, verify local CE or other region-specific requirements with the supplier as applicable to your installation site.
With a 75 kVA rating and robust, shielded construction, maintenance is typically limited to periodic insulation checks, cooling system cleanliness, and connection integrity. The long-term ROI comes from improved reliability under harmonic load, reduced downtime, and a shorter project timeline due to integrated protection features like shielding and weather protection.