Eaton N48M28B7516CU K-Factor Transformer - UL Listed
Part Number: N48M28B7516CU
Quick Summary
Eaton N48M28B7516CU K-Factor nonlinear ventilated transformer powers industrial control panels efficiently. Engineers often wrestle with energy waste, regulatory complexity, and installation challenges in space-constrained equipment rooms. UL Listed certification, DOE 2016 efficiency, and 10 CFR Part 431 compliance provide dependable benchmarks for mission-critical projects. With copper windings, a three-phase 75 kVA rating, and a NEMA 2 enclosure, this unit delivers robust power delivery and long-term reliability. Its flexible mounting options and precise tap settings simplify deployment in new builds and retrofits, delivering measurable reductions in heat, energy cost, and maintenance while supporting safer, compliant operation in typical harsh environments.
Product Information
Extended Description
N48M28B7516CU Eaton: Eaton Eaton K-Factor nonlinear ventilated transformer, Copper windings, NEMA 2, FR943, 60 Hz, 220°C, 75 kVA , Three-phase, 480 Delta V, 208Y/120 Vac, NEMA ST-20, 80°C, 75 kVA, 480 Vac-208Y/120 Vac, WS60, 283B, DOE 2016
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B7516CU
UPC
786680193019
Product Length/Depth
31.5 in
Product Height
51 in
Product Width
34.5 in
Product Weight
1.1 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.
Compliances
DOE2016 Efficient
Certifications
UL Listed
Catalog Notes
10 CFR Part 431 (2016) Efficient
Coil material
Copper
Enclosure
NEMA 2
Wiring connection
283B
Type
Energy-efficient ventilated transformer
Frame
FR943
Insulation
220 °C
Mounting
Floor or wall
Tap size
2 at +2.5%, 4 at -2.5%
Frequency rating
60 Hz
Kva Rating
75 kVA
Volt ampere rating
75 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Sound Level
NEMA ST-20
Temperature rise
80 °C rise
Voltage rating
480 Vac-208Y/120 Vac
Efficiency
10 CFR Part 431-2016 (DOE 2016)
Modification 1
Electrostatic shield
Special features
K-factor 13
Weathershield
WS60
Eaton's high-efficiency dry-type transformers
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Eaton Specification Sheet - N48M28B7516CU
Feature: K-Factor nonlinear ventilated design with copper windings and a 75 kVA rating. Business Impact: improved efficiency, lower heat generation, and reduced energy costs over the life of the installation. Application: ideal for industrial control panels, machine subsystems, and OEM equipment that demand reliable power with responsive voltage regulation. Feature: NEMA 2 enclosure with floor or wall mounting and 220 °C insulation within FR943 frame. Business Impact: rugged indoor protection and installation flexibility that reduces retrofit time and space constraints. Application: plant floors and equipment rooms where splash resistance and secure mounting simplify compliance and maintenance. Feature: Wiring connection 283B and taps—2 at +2.5%, 4 at -2.5%. Business Impact: adaptable voltage configuration minimizes field adjustments and inventory needs. Application: systems needing on-site voltage fine-tuning to align with local distribution or downstream equipment. Feature: 60 Hz operation with 480 V primary and 208Y/120 V secondary, plus 80 °C rise and 75 kVA rating. Business Impact: predictable performance under load, reduced overheating risk, and compatibility with standard industrial power rails. Application: three-phase power distribution in control panels and industrial subsystems. Feature: Additional features include WS60 weather shield compatibility and electrostatic shield option. Business Impact: enhanced durability in harsh environments and improved insulation performance, contributing to longer service life and safer operation. Application: manufacturing environments requiring extra environmental protection and electrical safety margins.
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FAQs
Install the transformer on a solid floor or wall mounting surface using the FR943 frame with its NEMA 2 enclosure. Ensure clearance for access to the 283B wiring connection and allow space for taps at +2.5% and -2.5%. Verify 480 V primary and 208Y/120 V secondary compatibility with adjacent equipment. Use WS60 shield if environmental exposure requires it.
The unit is a three-phase, 75 kVA transformer with a 480 V primary and 208Y/120 V secondary, operating at 60 Hz. It uses copper windings and offers tap adjustments (+2.5% and -2.5%) to fine-tune voltage. Rated for up to an 80 °C rise, it aligns with DOE 2016 efficiency requirements and UL Listed safety standards.
Yes. The N48M28B7516CU meets DOE 2016 efficient criteria and carries UL Listed certification, ensuring compliance with energy efficiency and safety standards. It also references 10 CFR Part 431 (2016) Efficient, supporting regulatory alignment for federal and state programs and for projects prioritizing energy performance.
Choose the NEMA 2 indoor enclosure for standard protection, with floor or wall mounting to fit your space. Leverage copper windings for lower losses and longer life, and consider WS60 or electrostatic shield modifications for harsher environments. Use the +2.5% / -2.5% taps to match local distribution without extra hardware, reducing retrofit costs over time.
Eaton provides a one-year warranty from installation or eighteen months from shipment, whichever occurs first. For service, rely on Eaton’s published policies and authorized support channels. Given the transformer’s robust construction (FR943 frame, 220 °C insulation) and regulatory certifications, your maintenance planning should focus on periodic insulation checks, connection integrity, and enclosure cleanliness to maximize uptime.