Eaton N48M31T4916 Transformer - DOE 2016 Efficient
Part Number: N48M31T4916
Quick Summary
The Eaton N48M31T4916 transformer delivers efficient three-phase power conversion from 480 V to 220Y/127 V for industrial plants. Operators often confront voltage variability, heat buildup, and harmonic losses that erode uptime and raise maintenance costs. Certified for DOE 2016 Efficient performance, UL Listed, and installed in a rugged NEMA 2 enclosure, it meets stringent energy and safety standards. By combining a compact 150 kVA footprint with an aluminum-wound construction and a shielded design, it supports reliable service and straightforward installation. In practice, this transformer supports energy-efficient power management across manufacturing lines, data centers, and process industries, delivering predictable regulation and long-term cost savings.
Product Information
Extended Description
N48M31T4916 Eaton: Eaton K-Factor nonlinear ventilated transformer, Aluminum windings, NEMA 2, FR944, 60 Hz, 220C, 150 kVA, Three-Phase, 480 to 220Y/127, 150C rise, Shielded, DOE 2016, WS61, 283B, K13
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M31T4916
UPC
786680245374
Product Length/Depth
33.5 in
Product Height
60 in
Product Width
38 in
Product Weight
1237 lb
Compliances
DOE2016 Efficient
Certifications
UL Listed
Catalog Notes
10 CFR Part 431 (2016) Efficient
Coil material
Aluminum
Enclosure
NEMA 2
Wiring connection
283B
Type
Energy-efficient ventilated transformer
Frame
944
Insulation
220 °C
Mounting
Floor
Tap size
2 at +2.5%, 4at -2.5%
Frequency rating
60 Hz
Kva Rating
150 kVA
Volt ampere rating
150 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
220Y/127 V
Sound Level
NEMA ST-20
Temperature rise
150 °C rise
Efficiency
10 CFR Part 431-2016 (DOE 2016)
Modification 1
Electrostatic shield
Special features
K-factor 13
Weathershield
WS61
Feature: K-Factor 13 nonlinear design. Business Impact: Reduces harmonic losses and manages heat better under nonlinear loads, improving overall efficiency and prolonging insulation life. Application: Ideal for facilities with motor drives and power supplies that introduce harmonic content. Feature: Aluminum windings. Business Impact: Lighter weight, lower material cost, and robust thermal performance, enabling easier handling and installation. Application: Suitable for retrofit or new-build projects where weight reduction matters. Feature: 150 kVA three-phase rating with 480 V primary and 220Y/127 V secondary. Business Impact: Supports substantial load while maintaining voltage regulation, reducing voltage drop and equipment derating. Application: Power distribution for heavy machinery, presses, and automation cells. Feature: Tap changer 2 at +2.5%, 4 at -2.5%. Business Impact: Precise voltage regulation under fluctuating loads, minimizing downstream device failures due to voltage excursions. Application: Critical in lines with variable demand or distant transformers. Feature: NEMA 2 enclosure, floor mounting. Business Impact: Rugged indoor protection against dust and moisture with straightforward installation on factory floors. Application: Suitable for equipment rooms and manufacturing floors where reliability matters. Feature: DOE 2016 Efficient and UL Listed. Business Impact: Compliance reduces risk in procurement, lowers energy costs, and supports regulatory audits. Application: Approved for industrial projects requiring energy efficiency and safety certifications. Feature: Electrostatic shield and WS61 weathershield option. Business Impact: EMI reduction and optional external protection for challenging environments, extending service life. Application: Sensitive automation environments and outdoor-adjacent installations where protection is beneficial.
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FAQs
Plan floor mounting for a 1237 lb unit with adequate clearance around all sides. Use the 283B wiring connection and ensure proper ventilation for the 60 Hz, 150 kVA transformer. The enclosure is NEMA 2, so protect against dust and moisture. Take advantage of the tap settings (2 at +2.5%, 4 at -2.5%) to maintain stable secondary voltage under load.
K-Factor 13 indicates enhanced tolerance to harmonic currents, reducing stray losses and improving efficiency under nonlinear loading. This, combined with DOE 2016 efficiency, lowers operating heat and extends insulation life, which translates to fewer cooling requirements and longer service intervals in drives and automation systems.
Yes. The unit is a 150 kVA three-phase transformer with a 480 V primary and a 220Y/127 V secondary, designed for industrial power distribution at 60 Hz. Its voltage regulation features and tap changer help maintain stable output across load changes typical in manufacturing lines.
This transformer is UL Listed and complies with DOE 2016 Efficient standards. It includes catalog notes reflecting 10 CFR Part 431 (2016) Efficient; the enclosure rating is NEMA 2 for indoor use, with an electrostatic shield enhancing EMI protection.
Energy efficiency and reduced harmonic losses contribute to lower operating costs and cooler operation, improving reliability. The rugged enclosure and shielded design minimize maintenance needs, while the aluminum windings and robust insulation support a long service life and favorable total cost of ownership for industrial environments.