Eaton N48M47B12A K-Factor Nonlinear Transformer - UL Listed
Part Number: N48M47B12A
Quick Summary
N48M47B12A is an Eaton K-Factor nonlinear ventilated transformer designed for scalable three-phase power distribution in commercial and industrial sites. Engineers often wrestle with non-linear loads, voltage stability, and the need for configurable taps to maintain reliable output under varied demand. Certified UL Listed for safety, this transformer supports essential compliance while helping you reduce risk in critical applications. With a 112.5 kVA rating, 480 V primary, and 480Y/277 V secondary, it enables efficient panel-level integration in modern electrical rooms. Aluminum windings, an electrostatic shield, and a 60 Hz rating provide robust performance, while modular taps and ventilated design simplify installation and ongoing maintenance. This combination supports installers and procurement teams by delivering reliable, easy-to-source power for mid-sized distribution needs.
Product Information
Extended Description
N48M47B12A Eaton: Eaton K-Factor nonlinear ventilated transformer K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 480Y/277V, 80°C, 112.5 kVA , Al windings, Elec. Shield
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M47B12A
UPC
786680015151
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 in
Product Weight
1 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
Catalog Notes
Model A
Coil material
Aluminum
Type
Ventilated transformer
Design
K-13
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
112.5 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
480Y/277 V
Temperature rise
80 °C rise
Special features
Electrostatically Shielded
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M47B12A
Feature → K-Factor nonlinear ventilated design improves tolerance to harmonic currents and minimizes overheating, delivering consistent voltage under harmonically complex loads. Business Impact → Reduces thermal stress on downstream equipment and lowers maintenance costs, improving overall site reliability. Application → Ideal for drives, rectifiers, and panel boards in manufacturing and data-center environments where harmonic content is common. Paragraph 2: Tap configuration provides 2 taps at +2.5% FCAN and 4 taps at -2.5% FCBN, enabling precise voltage regulation as load and input conditions shift. Business Impact → Stabilizes voltage, reduces flicker, and minimizes nuisance tripping, saving time during commissioning and shifts during operation. Application → Panel boards, MCCs, and multi-feed distributions benefit from this built-in adaptability. Paragraph 3: Primary voltage is 480 V with secondary of 480Y/277 V, delivering compatibility with common building systems and three-phase distribution. Business Impact → Simplifies sourcing and reduces the need for multiple standalone units; Installation becomes more straightforward for system integrators. Application → Office campuses, industrial facilities, and data centers. Paragraph 4: Rated at 112.5 kVA with 60 Hz operation and an 80 °C rise, it supports mid-range load profiles while maintaining thermal margins. Business Impact → Improved load capacity planning and reduced risk of hot spots, enabling longer intervals between replacements. Application → Equipment rooms and switchgear assemblies with diverse loads. Paragraph 5: Aluminum windings and an electrostatic shield enhance durability and EMI/EMC performance in noisy electrical environments. Business Impact → Better energy efficiency, lower noise, and safer simultaneous operation of nearby systems. Application → Factory floors with motor drives, HVAC systems, and rectifier banks. Paragraph 6: Ventilated cooling design paired with UL Listed certification offers installation flexibility and predictable compliance. Business Impact → Accelerates approval in regulated facilities and streamlines maintenance planning. Application → Any panel or substation needing reliable transformer performance with straightforward documentation.
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FAQs
Yes. N48M47B12A provides a 480 V primary and 480Y/277 V secondary in a three-phase configuration, making it compatible with standard industrial panels, MCCs, and distribution boards. Ensure adequate ventilation, proper clearances, and correct tap usage during commissioning to maintain voltage accuracy under load.
The transformer offers two taps at +2.5% FCAN and four taps at -2.5% FCBN. Using these taps allows you to fine-tune secondary voltage to match actual loading and supply variations, reducing risk of undervoltage or overvoltage conditions. Follow manufacturer wiring diagrams and label tap settings for repeatable results.
Key specs include 112.5 kVA, 60 Hz frequency rating, primary 480 V, secondary 480Y/277 V, and 80 °C rise with aluminum windings and electrostatic shielding. Typical use cases are panel boards, motor control centers, and other mid-range load centers where harmonic content and voltage stability matter.
UL Listed indicates the transformer has been tested for safety and meets recognized standards, simplifying qualification in regulated facilities. It supports safer operation, consistent quality, and can streamline purchasing through a clearly defined certification path for electrical equipment.
Ventilated designs manage heat more effectively under harmonic loads, reducing thermal stress and prolonging component life. The K-Factor nonlinear approach improves reliability in mixed-load environments, potentially lowering downtime and maintenance costs while supporting energy efficiency and faster commissioning in modern electrical rooms.