Eaton N48M28B75CU Transformer - UL Listed
Part Number: N48M28B75CU
Quick Summary
Eaton N48M28B75CU Transformer is a K-Factor nonlinear ventilated transformer for three-phase power distribution in plant automation. In many facilities, heat buildup, limited space, and unpredictable outages erode uptime and increase maintenance costs. UL Listed certification, 80 °C rise rating, and copper windings with electrostatic shielding provide robust safety and long-term reliability. With 480 V primary and 208Y/120 V secondary, and a rugged 75 kVA rating, it integrates smoothly into established electrical distributions, reducing integration risk. The ventilated design supports higher ambient temperatures, enabling reliable operation in shared equipment rooms. Its 916A frame, WS19 weather shield, and copper windings help minimize thermal stress and extend service life.
Product Information
Extended Description
N48M28B75CU Eaton: K-Factor nonlinear ventilated transformer K-13, Three-phase, PV: 480V, Taps: 2 at 0.025 FCAN, 4 at -0.025 FCBN, SV: 208Y/120V, 80°C, 75 kVA , Cu windings, Elec. Shield
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B75CU
UPC
786680105784
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
960 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
60 Hz
Kva Rating
75 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
80 °C rise
Special features
Electrostatically Shielded
Weathershield
WS19
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28B75CU
Feature: K-13 nonlinear K-Factor design with ventilation reduces hotspot formation under harmonic-rich loads, delivering measurable efficiency and lifespan gains. Business Impact: cooler operation lowers thermal stress on windings and insulation, shortening maintenance cycles and lowering total cost of ownership. Application: ideal for manufacturing lines and servo-heavy machinery where harmonics from drives are common, and reliability must be maintained under continuous duty. Paragraph 2: Feature: Three-phase 75 kVA rating with 480 V primary and 208Y/120 V secondary enables direct integration into standard industrial feeders. Business Impact: minimizes additional equipment, reduces wiring complexity, and shortens panel space requirements. Application: data centers, process lines, and utility feeds where fast, compliant deployment is valued. Paragraph 3: Feature: Tap adjustments—2 at +2.5% FCAN and 4 at -2.5% FCBN—allow precise voltage tuning under load swings. Business Impact: maintains voltage profile, protects downstream equipment, and reduces nuisance tripping. Application: systems with fluctuating loads, long feeders, and multiple parallel drives. Paragraph 4: Feature: Copper windings with electrostatic shielding and associated 80 °C rise rating deliver robust electrical performance and EMI containment. Business Impact: improved short-circuit resistance, safer enclosure spacing, and longer service life. Application: control cabinets and harmonics-sensitive instrumentation in industrial plants. Paragraph 5: Feature: Weather-resistant features (Weathershield WS19) and a compact footprint within a 916A frame; ventilation design supports higher ambient temperatures. Business Impact: easier installation in crowded plant rooms or outdoor-rated locations, reduced cooling requirements, and faster commissioning. Application: outdoor substations, equipment rooms, or harsh environments. Paragraph 6: Feature: 75 kVA rated transformer with copper windings provides high efficiency and low losses under continuous operation. Business Impact: energy savings over the life of the asset and predictable performance. Application: critical power distribution for manufacturing and facility management. Paragraph 7: Feature: Comprehensive Eaton warranty policy and UL Listed certification offer procurement and compliance certainty. Business Impact: simpler vendor qualification, reduced risk, and clearer maintenance planning. Application: corporate facilities programs and OEM integration.
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FAQs
Plan for a three-phase installation with a 480 V primary and 208Y/120 V secondary. The unit weighs 960 lb and uses a 916A frame with WS19 weather shielding, so ensure adequate space for ventilation and service access. Consider room temperature limits aligned with the 80 °C rise rating and provide appropriate mounting hardware for the frame size.
This transformer is a 75 kVA, three-phase model with a 480 V primary and 208Y/120 V secondary, rated for 60 Hz operation. It features copper windings, electrostatic shielding, and a K-Factor nonlinear (K-13) design to mitigate harmonics while maintaining voltage integrity under load variations.
Yes. It includes Weathershield WS19 and a ventilated design to sustain performance in challenging spaces. The copper windings and shielding enhance EMI containment and reliability, making it appropriate for tougher industrial rooms, outdoor-rated locations, and spaces with elevated ambient temperatures.
The N48M28B75CU is UL Listed, offering a recognized safety certification for industrial installations. It carries Eaton’s warranty policy 25-000, providing one year from installation or 18 months from shipment, whichever occurs first, supporting maintenance planning and risk reduction.
The 75 kVA rating with copper windings delivers high efficiency and low losses, reducing energy costs over the asset life. Its harmonic-mitigating K-Factor design and robust shielding lower maintenance intervals, while the configurable taps and strong enclosure protection simplify long-term operational planning and uptime for manufacturing and process facilities.