Eaton N48M28B75A K-Factor transformer - UL Listed

K-Factor nonlinear design improves thermal performance by actively managing harmonic currents, reducing insulation stress, and extending transformer life. This leads to fewer unplanned outages and lower maintenance costs in facilities with nonlinear loads such as drives and PWM controllers. The result is more stable voltage under transient events and longer service intervals for critical equipment. In practice, engineers selection is simplified because the transformer behaves predictably under peak harmonic demand. With a 75 kVA rating, the unit provides solid voltage quality for critical loads while supporting compact feeder design. This makes it well-suited for machine tools, robotics cells, process controls, and data-center subfeeds that demand consistent voltage. The three-phase configuration minimizes phase imbalance and helps maintain thermal margins in crowded switchgear assemblies. Operating at 480 V primary and 208Y/120 V secondary, the transformer integrates with standard distribution and control panels, reducing the need for additional step-down equipment. Taps provide voltage fine-tuning—two taps at +2.5% FCAN and four taps at -2.5% FCBN—allowing on-site adjustments to compensate for line drop and load changes. The 60 Hz rating ensures compatibility with common power systems in North America. Aluminum windings offer corrosion resistance, lower weight, and cost efficiency compared with copper windings, easing handling during installation. The electrostatic shield minimizes EMI coupling to nearby controls and sensors, improving reliability for sensitive automation equipment. A robust 916A frame, with a footprint of 23.42 by 28.22 by 48.56 inches, ensures secure mounting in standard transformer rooms. Weathershield WS19 expands outdoor deployment options, enabling reliable service in exposed environments when paired with proper enclosure ventilation. The UL Listed certification provides a clear safety baseline for industrial compliance and maintenance audits. Combined with a 1-year warranty, this transformer supports predictable lifecycle planning and a favorable total cost of ownership in power-distribution upgrades.