Eaton N48M28B4516CULS45 Transformer - UL Listed
Part Number: N48M28B4516CULS45
Quick Summary
Eaton N48M28B4516CULS45 transformer is a compact, three‑phase solution designed for industrial power distribution. It delivers efficient, reliable voltage conversion from 480 V to 208Y/120 V to support critical equipment in manufacturing, materials handling, and automation environments. Engineers often confront noise, heat, and space constraints during integration, retrofit, or new installations, and this model addresses those challenges with a low 45 dB sound level and an energy-efficient profile. This UL Listed unit adheres to DOE 2016 efficiency targets and features a K‑Factor nonlinear design with an electrostatic shield, enabling safer, more compliant operation. In practice, it pairs well with floor or wall mounting in protected spaces, delivering consistent performance while simplifying installation and service logistics.
Product Information
Extended Description
N48M28B4516CULS45 Eaton: Eaton Eaton K-Factor nonlinear ventilated transformer, Aluminum windings, NEMA 2, 60 Hz, 220°C, 45 kVA , Three-phase, 480 Delta V, 208Y/120 Vac, Low sound 45 dB, 80°C, 45 kVA, 480 Vac-208Y/120 Vac, DOE 2016
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B4516CULS45
UPC
786680196027
Product Length/Depth
24 in
Product Height
43 in
Product Width
30.5 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.
Certifications
UL Listed
Catalog Notes
10 CFR Part 431 (2016) Efficient
Coil material
Aluminum
Enclosure
NEMA 2
Type
Energy-efficient ventilated transformer
Insulation
220 °C
Material
Copper
Mounting
Floor or wall
Tap size
2 at +2.5%, 4 at -2.5%
Frequency rating
60 Hz
Kva Rating
45 kVA
Volt ampere rating
45 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Sound Level
45 dB
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
Eaton's low-voltage dry-type distribution transformers
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Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28B4516CULS45
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: K‑Factor nonlinear ventilated transformer enables higher fault tolerance and improved efficiency in diverse loading conditions → Business Impact: Reduced energy waste and improved reliability under varying loads → Application: Industrial control panels and distributed power systems where load patterns fluctuate. Feature: Aluminum windings with a copper conductor core provide lightweight, durable construction → Business Impact: Lower thermal stress and faster cooling cycles, extending service life → Application: Retrofit projects in tight spaces where heat management is a concern. Feature: NEMA 2 enclosure offers dependable indoor protection against dust and incidental moisture → Business Impact: Enhanced equipment uptime in typical plant environments without complex enclosure cooling → Application: Electrical rooms and machine control areas requiring robust protection. Feature: DOE 2016 efficiency compliance and UL Listed certification → Business Impact: Regulatory peace of mind and potential utility incentives, reducing total cost of ownership → Application: New builds and retrofit programs targeting energy performance standards. Feature: Tap size options of 2 at +2.5% and 4 at −2.5% support voltage regulation → Business Impact: Precise voltage tailoring to maximize downstream equipment performance and reduce thermal losses → Application: Site-specific voltage matching for critical loads and sensitive electronics. Feature: Electrostatic shield and 45 dB sound level → Business Impact: Improved dielectric integrity and quieter operation in shared spaces → Application: Control rooms, data centers, and overhead crane cabins where noise is a concern. Feature: 3‑phase, 45 kVA rating with 480 V primary and 208Y/120 V secondary → Business Impact: Scalable power distribution for mid-sized industrial circuits with simplified wiring → Application: Panel boards and motor starter assemblies in manufacturing cells. Feature: 80 °C rise insulation and 220 °C insulation rating → Business Impact: Robust performance under elevated temperatures, reducing cooling requirements → Application: High‑density electrical rooms and equipment racks. Feature: Electrostatic shield and 10 CFR Part 431 efficiency notes embedded in catalog data → Business Impact: Enhanced safety margins and compliance documentation for risk‑averse projects → Application: DOE‑compliant installations and facilities with strict energy reporting.
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FAQs
This unit is a three‑phase transformer with a 480 V primary and 208Y/120 V secondary, designed for floor or wall mounting in protected indoor spaces. Confirm enclosure rating (NEMA 2) and ensure room for 24 in depth, 43 in height, and 30.5 in width as per catalog data. Verify voltage regulation via the +2.5%/−2.5% taps and accommodate the 60 Hz frequency. Wiring should follow local electrical codes and Eaton’s installation guidelines, with proper clearances and protection devices nearby.
Key specs include a 45 kVA (kVA rating) three‑phase transformer with primary 480 V and secondary 208Y/120 V, 60 Hz frequency, 45 dB sound level, and 80 °C rise insulation. It uses aluminum windings on a copper core and includes a 2‑tap +2.5% and 4 taps −2.5% voltage regulation option, along with an electrostatic shield for enhanced insulation and safety.
Yes, the N48M28B4516CULS45 is designed for indoor distribution with a compact footprint and low noise (45 dB). The NEMA 2 enclosure provides protection for typical plant environments, and its DOE 2016 efficiency rating helps reduce operating costs. The voltage regulation taps enable site‑specific tuning, making it suitable for sensitive equipment in data centers and manufacturing lines.
The unit is UL Listed, supports 10 CFR Part 431 efficiency guidelines, and aligns with DOE 2016 energy targets. An electrostatic shield improves insulation integrity, and the product notes indicate energy‑efficient design features. These certifications help meet regulatory requirements and support sustainability goals in industrial facilities.
ROI is influenced by DOE 2016 efficiency benefits and reduced energy waste from precise voltage regulation. Maintenance considerations include routine insulation checks, verification of taps for voltage accuracy, and periodic verification of enclosure integrity. The UL listing and documented efficiency standards reduce risk during audits and help justify lifecycle cost savings over traditional transformers.