Eaton N48M31T3016 Transformer - K-Factor 13
Part Number: N48M31T3016
Quick Summary
The Eaton N48M31T3016 transformer provides efficient three-phase power distribution for control panels and manufacturing equipment. Engineers often struggle with energy waste, harmonic distortion, and integration gaps that drive up project costs and ongoing operating spend. This unit meets DOE 2016 efficiency standards, is UL Listed, and arrives in a rugged NEMA 2 enclosure suitable for indoor installations. Aluminum windings and a K-Factor 13 design help minimize losses under non-linear loads, while 480 V to 220Y/127 V taps enable flexible system integration. With a focus on reliability and lifecycle value, you gain predictable performance, easier maintenance, and a lower total cost of ownership for industrial power distribution.
Product Information
Extended Description
N48M31T3016 Eaton: Eaton Eaton K-Factor nonlinear ventilated transformer, Aluminum windings, NEMA 2, FR940, 60 Hz, 220C, 30 kVA, Three-Phase, 480 to 220Y/127, 150C rise, Shielded, DOE 2016, WS58, 283B, K13
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M31T3016
UPC
786680244131
Product Length/Depth
21.13 in
Product Height
36.88 in
Product Width
24.88 in
Product Weight
433 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
940
Insulation
220 °C
Mounting
Floor or wall, upright only
Tap size
2 at +2.5%, 4at -2.5%
Frequency rating
60 Hz
Kva Rating
30 kVA
Volt ampere rating
30 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
WS58
Feature: K-Factor 13 nonlinear design enhances tolerance to harmonic currents, reducing transformer overheating and extending life. Business impact: lower maintenance costs and higher reliability under non-linear loads. Application: motor drives, variable-frequency drives, and data-center power rooms. Feature: DOE 2016 efficient rating and UL Listed compliance improve energy performance and safety. Business impact: reduced energy costs, easier regulatory reporting, and streamlined procurement. Application: indoor industrial installations in manufacturing environments. Feature: Aluminum windings with 220 °C insulation and 150 °C rise provide robust performance with cost efficiency. Business impact: lower material cost and lighter handling without sacrificing insulation margins. Application: high-duty, long-life power distribution in 60 Hz systems. Feature: NEMA 2 enclosure with WS58 weathershield and shielded construction delivers reliable indoor protection. Business impact: enhanced durability in dusty or humid environments and extended service intervals. Application: floor or wall-mounted installations in factory settings. Feature: Tap settings of 2 at +2.5% and 4 at -2.5% enable voltage flexibility from 480 V to 220Y/127 V. Business impact: reduces need for additional subtransformers, enabling faster commissioning. Application: retrofit projects and new builds requiring adaptable voltage conversion.
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FAQs
The N48M31T3016 is designed for indoor use with a rugged NEMA 2 enclosure and floor or wall mounting (upright only). It weighs about 433 lb, so plan for secure anchoring and service clearances per local code. It supports 480 V primary and 220Y/127 V secondary along with 60 Hz operation, making it suitable for control panels and machine rooms. Ensure adequate ventilation and compliance with UL Listed installation practices.
K-Factor 13 indicates enhanced tolerance to non-linear, harmonic-rich loads, reducing overheating and extending transformer life under demanding duty cycles. This improves reliability for drives and other non-sinusoidal loads common in modern manufacturing environments. When selecting a transformer for harmonic-rich systems, K-Factor 13 offers a resilient solution without oversized ancillary equipment.
This transformer is UL Listed and complies with DOE 2016 efficiency standards (and 10 CFR Part 431 for efficiency). UL Listing covers safety and electrical compliance for indoor equipment, while DOE 2016 focuses on energy efficiency performance. Together, they ensure regulatory compliance, safer operation, and lower energy costs across the lifecycle of the installation.
The unit provides a 220Y/127 V secondary, with taps at +2.5% and -2.5% for voltage adjustment. This enables flexible integration with 480 V input systems and compatible downstream equipment, reducing the need for additional transformers or voltage regulators. It’s ideal for retrofit projects and new builds that require precise voltage matching for sensitive control loads.
Yes, the N48M31T3016 is suitable for retrofit in spaces with existing 480 V systems, thanks to its voltage taps and robust enclosure. The aluminum windings and corrosion-resistant design reduce long-term maintenance, while UL listing and DOE 2016 efficiency deliver ongoing cost savings. Expect predictable performance, lower energy use, and simplified compliance reporting across the life of the installation.