Eaton N43M51T22X Transformer - K-13, UL Listed
Part Number: N43M51T22X
Quick Summary
Eaton N43M51T22X Transformer is a K-Factor nonlinear ventilated transformer for three-phase power distribution. In busy plants, voltage fluctuations and harmonic currents can trigger overheating, downtime, and costly maintenance. This model carries UL Listed safety certification and features an electrostatically shielded design with WS35 weather protection for outdoor installations. Note that additional certifications such as CE or SIL are not specified here and should be confirmed with Eaton for your regulatory needs. For engineers, the combination of 225 kVA capacity, field-adjustable taps, and rugged construction translates to lower lifecycle costs and smoother power management across facilities. It supports reliable operation under mixed loads, helping protect sensitive equipment and reduce unplanned downtime.
Product Information
Extended Description
N43M51T22X 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: 416Y/240V, 150°C, 225 kVA, Al windings , Elec. Shield, Frame: 919, uses WS35
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N43M51T22X
UPC
786680067914
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
2400 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
919
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
50-60 Hz
Kva Rating
225 kVA
Phase
Three-phase
Primary voltage
416 V
Secondary Voltage
416Y/240 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS35
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N43M51T22X
Feature: K-Factor nonlinear design with a K-13 cooling envelope optimizes performance under harmonic loads and crest-factor events. Business Impact: Lower hotspot temperatures, reduced insulation aging, and more stable voltage regulation across unbalanced phases, improving equipment life and maintenance windows. Application: Well-suited for motor drives, rectifiers, smoothed power supplies, and other non-linear loads in heavy manufacturing and processing facilities. Feature: Ventilated construction with a rugged 919 frame and aluminum windings facilitates effective heat dissipation. Business Impact: Supports hotter environments and higher continuous kVA loading while maintaining insulation integrity. Application: Outdoor substations, plant rooms with limited cooling, and high ambient-temperature sites requiring reliable transformer operation up to a 150°C rise. Feature: Field-adjustable taps with 2 at +2.5% FCAN and 4 at -2.5% FCBN enable precise voltage regulation. Business Impact: Maintains site voltage within tolerance, reduces over- and under-voltage stress on downstream equipment, and minimizes energy waste. Application: Installations facing supply variations or long feeder runs, allowing quick on-site compensation without external regulators. Feature: Aluminum windings with electrostatic shielding and an electrostatically shielded design reduce EMI and enhance safety. Business Impact: Lower electromagnetic interference, safer crew operation, and improved protection for nearby drives and control systems. Application: Data centers, process controls, and EMI-sensitive equipment in mixed-use facilities. Feature: Weathershield WS35 enclosure supports outdoor installation and weather-ready operation. Business Impact: Enables outdoor power distribution without compromising insulation, service life, or performance in variable climates. Application: Outdoor substations, loading docks, and exposed plant areas. Feature: UL Listed certification and Eaton warranty support provide safety assurance and procurement confidence. Business Impact: Simplifies audits, accelerates procurement, and aligns with maintenance planning for long-term reliability. Application: Heavy-duty installations requiring crane mounting, solid foundations, and long-term service visibility.
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FAQs
This unit weighs about 2400 lb and uses a large 919 frame, requiring proper crane access, foundation design, and secure mounting. Plan for service clearances, ventilation, and routine maintenance access. Ensure adequate space for the aluminum windings, electrostatic shield, and WS35 weather shield when locating outdoors.
The N43M51T22X utilizes a K-Factor nonlinear design (K-13) to manage harmonic currents and crest factors effectively. This reduces overheating and insulation stress, supporting stable voltage regulation for drives, rectifiers, and other non-linear loads. The result is increased uptime and longer component life in heavy manufacturing environments.
Yes. The transformer provides two taps at +2.5% FCAN and four taps at -2.5% FCBN, allowing on-site voltage regulation to compensate for supply variations. After adjustments, recheck output voltages to ensure downstream equipment operates within tolerance and avoid unnecessary energy waste.
WS35 WeatherShield enables outdoor installation by protecting the transformer from environmental exposure. Combined with the 150 °C rise insulation and aluminum windings, this promotes reliable operation in variable climates without compromising insulation life. It is especially advantageous for outdoor substations and exposed plant areas.
The product follows Eaton’s warranty policy 25-000, providing one year from installation or eighteen months from shipment, whichever occurs first. UL Listing adds safety assurance, and Eaton offers ongoing support for maintenance planning and service needs on heavy-duty installations requiring foundations and crane access.