Eaton N48M28F4921CUSR K-Factor Transformer - UL Listed
Part Number: N48M28F4921CUSR
Quick Summary
The Eaton K-Factor nonlinear ventilated transformer delivers efficient, reliable power conditioning for three-phase industrial power distribution. This design helps reduce thermal stress and energy waste in on-site electrical networks, addressing overheating and efficiency gaps. Rated for 150 kVA, with three-phase 480 V primary and 208Y/120 V secondary, it aligns with DOE2016 Efficient and UL Listed requirements. In practice, integration is straightforward with UL listings and DOE2016 compliance, supporting seamless procurement and faster deployment. The transformer is engineered with a K13 feature set for enhanced fault tolerance and compact footprint in 150 kVA installations. From a procurement and maintenance perspective, the unit supports flexible wiring connections and standardized dimensions for reliable retrofits and scalable expansion.
Product Information
Extended Description
N48M28F4921CUSR Eaton: Eaton NextGen K-Factor DOE2016 CU SR-RPT, 150KVA, K13 XFMR, 3PH, 480-208Y/120, 115C
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28F4921CUSR
UPC
786689670849
Product Length/Depth
31.5 in
Product Height
51 in
Product Width
34.5 in
Product Weight
1200 lb
Compliances
DOE2016 Efficient
Certifications
UL Listed
Wiring connection
283B
Type
Energy-efficient ventilated transformer
Frame
943
Kva Rating
150 kVA
Volt ampere rating
150KVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
115 °C rise
Special features
K13
Feature: K-Factor nonlinear ventilated design for enhanced harmonic management. This topology minimizes harmonic heating, reduces circulating currents, and improves voltage stability under nonlinear loads, thereby lowering peak cooling demand and extending insulation life. Application: Ideal for plants with drives, nonlinear power supplies, and mixed-load feeders where long-term transformer reliability and energy efficiency drive total-cost-of-ownership outcomes.Feature: 150 kVA three-phase rating with 480 V primary and 208Y/120 V secondary. Business impact: Enables centralized distribution with fewer transformers, tighter voltage regulation, and lower maintenance intervals, delivering a lower installed cost over the asset life. Application: Suitable for motor control centers, distribution panels, and line-side connections in manufacturing facilities seeking scalable power conversion.Feature: DOE2016 Efficient performance and UL Listed certification. Business impact: Ensures regulatory compliance, reduces energy waste, and simplifies supplier qualification for corporate ESG goals. Application: Ideal for facilities pursuing energy management programs and audit-ready electrical infrastructure.Feature: Compact footprint with dimensions 31.5 in L x 34.5 in W x 51 in H, plus frame 943 and a 1200 lb weight. Business impact: Space planning becomes precise, mounting hardware commonality favors standard service spaces, and crane-lift planning reduces install time. Application: Retrofit projects in existing plant rooms or new builds requiring robust, code-compliant power conversion.Feature: Wiring connection 283B and rugged build for heavy-duty installations. Business impact: Streamlines field wiring, reduces installation time, and enhances serviceability through standardized terminations. Application: Integrates with existing switchgear, bus ducts, and distribution panels via proven Eaton legacy hardware and documented install procedures.Feature: 115 °C temperature rise and K13 special features. Business impact: Supports reliable operation in hot environments and dense enclosures, enabling tighter footprints without compromising safety margins. Application: Enclosures with limited cooling capacity, high ambient temperatures, or space-constrained facilities such as metal fabrication shops and packaging lines.
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FAQs
Key factors include the unit's 1200 lb weight, footprint (31.5 in L x 34.5 in W x 51 in H), and mounting requirements. Plan crane access and service clearances, verify wiring connection 283B compatibility, and ensure nearby ventilation for the 115 °C rise rating. UL Listed and DOE2016 Efficient compliance simplify site acceptance.
The K-Factor nonlinear ventilated topology mitigates harmonic heating and reduces circulating currents, improving voltage stability under nonlinear loads. The result is lower cooling energy, longer insulation life, and better overall transformer efficiency, especially in drives-heavy or power supply-rich facilities.
Yes. With a 150 kVA rating and compatible 480 V to 208Y/120 V voltages, it fits typical switchgear and panel boards. Its standardized frame 943 and wiring connection 283B shorten field wiring tasks, while UL Listed status and DOE2016 Efficiency ease regulatory approvals, supplier qualification, and long-term maintenance planning. Retrofit projects benefit from predictable footprint and readily available spares.
UL Listed certification ensures safety compliance and third-party validation, while DOE2016 Efficient rating supports energy-performance targets. Together they streamline project approvals, facilitate ESG reporting, and reduce risk during audits. For procurement teams, these credentials simplify vendor qualification and lifecycle planning, enabling easier budgeting and warranty coverage. Maintenance teams benefit from established service manuals and tested interchangeability with Eaton-recommended components.
Take into account energy efficiency, reduced cooling load, and longer interval between maintenance events due to robust K-Factor design. While upfront cost may be higher than some legacy units, lifecycle cost is typically lower due to improved reliability, UL warranty alignment, and easier spares availability. Operational downtime is reduced thanks to predictable performance and straightforward servicing.