Eaton N39M28T30XCU K-Factor Transformer - UL Listed
Part Number: N39M28T30XCU
Quick Summary
The Eaton K-Factor nonlinear ventilated transformer provides robust three-phase power transformation for data centers, manufacturing floors, and control panels. Engineers often battle heat, limited cabinet space, and voltage instability in tight enclosures, and this unit mitigates heat via a ventilated design and copper windings, while offering precise voltage taps for process control. UL Listed safety certification confirms compliance with core electrical standards and reliability in harsh environments, reducing regulatory risk and downtime. This solution supports safer, more efficient power distribution for industrial automation and machine wiring, enabling tighter control of energy use and longer equipment life in demanding applications.
Product Information
Extended Description
N39M28T30XCU Eaton: K-Factor nonlinear ventilated transformer K-13, Three-phase, PV: 400V, Taps: 2 at 0.025 FCAN, 4 at -0.025 FCBN, SV: 208Y/120V, 150°C, 30 kVA, Cu windings, Elec. Shield, Frame: 912B
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N39M28T30XCU
UPC
786680067945
Product Length/Depth
16.5 in
Product Height
30 in
Product Width
23 in
Product Weight
404 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
912B
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
50-60 Hz
Kva Rating
30 kVA
Phase
Three-phase
Primary voltage
400 V
Secondary Voltage
208Y/120 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS38
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N39M28T30XCU
Feature → K-13 K-Factor nonlinear design minimizes voltage distortion from nonlinear loads. Business Impact → This reduces thermal stress and extends transformer life, lowering maintenance and replacement costs. Application → Ideal for automation cabinets housing variable-speed drives, PLCs, and CNC controls in manufacturing environments. Feature → Ventilated construction with copper windings enhances heat dissipation. Business Impact → Lower temperature rise improves efficiency and supports higher continuous loading in tight enclosures. Application → Well suited for retrofit into compact control panels and new builds where space and heat management are critical. Feature → Three-phase 30 kVA rating with 400 V primary and 208Y/120 V secondary, operating at 50–60 Hz. Business Impact → Provides flexible power conversion for standard plant power architectures with selectable taps for voltage adjustments (+2.5% FCAN, -2.5% FCBN). Application → Used in distribution panels, machine tool feeds, and automation racks across industrial facilities. Feature → Electrostatic shielded windings and WS38 weather shield enable EMI/RFI protection and environmental resilience. Business Impact → Minimizes interference and protects equipment in demanding environments, reducing nuisance trips and failures. Application → Suitable for factory floors, outdoor enclosures, and harsh industrial spaces requiring reliable shielding. Feature → Durable 912B frame, copper coil, and a weight of 404 lb support secure installation and long service life. Business Impact → simplifies mounting and maintenance planning, lowering total cost of ownership. Application → Fits into standard transformer rooms or large electrical cabinets with space for ventilation and service access.
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FAQs
To install the N39M28T30XCU, mount the transformer on a clean, level surface inside a ventilated enclosure, ensuring adequate clearance for air flow. Use mounting hardware compatible with the 912B frame, connect the 400 V primary to a dedicated feeder, and tie the 208Y/120 V secondary to your load circuitry. Verify torque specs and observe safety lockout procedures. Also confirm the taps: +2.5% FCAN and -2.5% FCBN to match site voltage, and perform insulation checks per Eaton guidelines.
The transformer is a three-phase 30 kVA unit with a 400 V primary and a 208Y/120 V secondary, designed for 50–60 Hz operation. It features copper windings, an electrostatic shield, a 150 °C rise, and selectable taps (+2.5% FCAN, -2.5% FCBN). It uses frame 912B and weighs about 404 lb, suitable for distribution panels and machine controls.
Yes. The N39M28T30XCU employs a K-Factor nonlinear design that mitigates harmonic heating, reducing voltage distortion under heavy nonlinear loads such as drives and converters. This improves reliability and extends service life, while maintaining stable voltage delivery in automation cabinets when properly ventilated and mounted.
The N39M28T30XCU carries UL Listed certification, indicating compliance with key safety standards for electrical equipment. This certification helps simplify regulatory acceptance in many regions and reduces risk in field installations. Always verify local code requirements and ensure installation follows Eaton guidelines for safe operation.
Eaton provides a warranty per policy 25-000: one year from the date of installation or eighteen months from shipment, whichever occurs first. Support resources include specification sheets, installation guidance, and access to Eaton’s transformer catalog and Flex Center materials. For critical uptime projects, plan routine maintenance and leverage the warranty for essential coverage.