Eaton N39M28T12XCU Transformer - UL Listed K-13
Part Number: N39M28T12XCU
Quick Summary
Eaton N39M28T12XCU Transformer is a K‑Factor nonlinear ventilated transformer for high‑demand industrial power distribution. Designed for rugged environments, it helps protect critical equipment from harmonic stress while maintaining voltage integrity. In facilities where uptime and efficiency drive ROI, this unit delivers dependable power with precise taps and robust cooling. It features three‑phase operation, a 400 V primary, and 208Y/120 V secondary to support central plant and panelboard applications. With UL Listed certification and a 150 °C rise, it aligns with safety standards while enabling wall or rack‑mount integration. The combination of copper windings, electrostatic shielding, and WS19 weathershield strengthens reliability and reduces maintenance costs over the life of the installation. This translates to lower total cost of ownership and faster project turn‑arounds.
Product Information
Extended Description
N39M28T12XCU Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 400V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 150°C, 112.5 kVA, Cu windings, Elec. Shield, Frame: 916A, uses WS19
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N39M28T12XCU
UPC
786680051739
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
1350 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
Copper
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
400 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 - N39M28T12XCU
Feature → Business Impact → Application: The N39M28T12XCU uses a K‑13 design to optimize performance under non‑linear loads, reducing voltage distortion and thermal stress. This improves equipment protection and extends transformer life, particularly in modern factories with varied harmonic profiles. Application: data centers and automation panels where harmonic mitigation and reliability matter. Feature → Business Impact → Application: Copper windings deliver higher conductivity and reduced I²R losses, supporting better efficiency and lower energy costs in continuous operation. Application: large manufacturing lines and process control systems. Feature → Business Impact → Application: Electrostatically shielded construction minimizes EMI coupling to nearby drives and sensors, enhancing control accuracy and reducing interference in sensitive automation environments. Application: servo systems and CNC equipment. Feature → Business Impact → Application: WS19 Weathershield provides weatherproofing for outdoor installations or harsh indoor environments, improving durability and reducing protective enclosure costs. Application: outdoor substations and exposed switchgear areas. Feature → Business Impact → Application: 112.5 kVA rating with a 50–60 Hz frequency range supports scalable power distribution without over‑sizing. Application: medium to large industrial processes and data centers. Feature → Business Impact → Application: 2 taps at +2.5% FCAN and 4 taps at −2.5% FCBN enable precise voltage adjustments to accommodate supply variations and panel tolerances. Application: critical control panels and multi‑voltage motor drives. The result is a robust, maintainable solution that balances performance, compliance, and total cost of ownership across industrial environments.
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FAQs
Plan for a substantial footprint and lifting requirements. Dimensions are 23.42 in by 28.22 in by 48.56 in with a weight of 1350 lb, and a 916A frame. Ensure adequate clearance for ventilation, access to taps (+2.5% FCAN, +4 taps at -2.5% FCBN), and service clearances for copper windings, shield, and WS19 weatherproofing. Include lifting points and appropriate enclosure provisions to meet UL Listed installation standards.
The K‑13 nonlinear transformer is engineered to handle harmonic current more effectively, reducing voltage distortion and thermal hotspots. This translates to steadier voltage regulation, improved device protection, and longer insulation life under mixed‑load conditions common in modern networks, robotics, and variable‑frequency drive systems.
Yes. With 112.5 kVA, three‑phase operation, 400 V primary, and 208Y/120 V secondary, it supports critical loads in data centers and factory floors. The electrostatic shielding mitigates EMI to protect sensitive controls, while WS19 weather shield enables outdoor or harsh indoor environments. UL Listed certification provides compliance confidence for regulated facilities.
Confirm UL Listed status and warranty terms (one year from installation or eighteen months from shipment). Verify the model supports required voltage taps, frames, and clearances for your enclosure and panelboard. Ensure compatibility with 50–60 Hz operation and confirm the WS19 weather shield and copper windings meet your EMI, thermal, and durability requirements.
Maintenance is typically minimal due to robust copper windings, shielded construction, and a sealed windings design. ROI comes from improved uptime, reduced harmonic losses, and lower EMI risk in automation panels. The unit’s 150 °C rise rating supports higher ambient performance, while its durable frame and weather shield reduce enclosure costs over the system life.