Eaton N48M31T12CU Transformer – UL Listed K‑Factor
Part Number: N48M31T12CU
Quick Summary
Eaton N48M31T12CU is a three-phase transformer for high-demand power distribution in industrial facilities. Operators often contend with harmonic currents, voltage fluctuation, and equipment overheating that threaten uptime. This UL Listed model uses a K-Factor nonlinear design and a 150°C rise, with an electrostatic shield to minimize EMI and protect sensitive electronics. Built for rugged reliability, it features copper windings, a 45 kVA rating, and a 480 V primary to 220Y/127 V secondary, supporting scalable power management across data centers and manufacturing plants.
Product Information
Extended Description
N48M31T12CU Eaton: K-Factor nonlinear ventilated transformer K-13, Three-phase, PV: 480V, Taps: 2 at 0.025 FCAN, 4 at -0.025 FCBN, SV: 220Y/127V, 150°C, 45 kVA, Cu windings, Elec. Shield
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M31T12CU
UPC
786680057755
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
1110 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
45 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
220Y/127 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS19
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M31T12CU
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: K-Factor nonlinear design with ventilation. Business Impact: improves harmonic tolerance and reduces insulation stress, extending transformer life in environments with nonlinear loads. Application: data centers, motor drives, and facilities with switching power supplies. Feature: 45 kVA three-phase rating from 480 V to 220Y/127 V. Business Impact: simplifies step-down distribution, lowers wiring complexity, and enables efficient control panel integration. Application: MCCs, switchgear installations, and plant automation. Feature: Tap changes at 2 increments of +2.5% and 4 increments of -2.5%. Business Impact: enhanced voltage regulation for long feeders and variable supply conditions, improving downstream equipment performance. Application: plants with fluctuating incoming voltages or long feeders. Feature: Electrostatic shield and copper windings. Business Impact: EMI protection and lower copper losses, boosting reliability and uptime. Application: sensitive PLCs, drives, and measurement systems. Feature: Weathershield WS19 and 150°C rise tolerance. Business Impact: durable operation in harsh environments and outdoor installations while maintaining performance. Application: industrial facilities, outdoor substations, and harsh factory floors. Feature: Robust enclosure with 916A frame and substantial weight. Business Impact: supports safe, code-compliant installation and scalable mounting in retrofit projects. Application: retrofit campaigns and new builds requiring reliable, rugged power isolation.
Get a Quick Quote for a Eaton N48M31T12CU
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton N48M31T12CU?
Enquire Now
FAQs
Plan for crane or forklift-assisted placement due to the 1110 lb weight and expansive footprint. Mount in a ventilated area with clearances for service access. The unit features a 480 V three‑phase primary and 220Y/127 V secondary, 916A frame, and WS19 weather shield. Follow local codes and Eaton mounting guidelines for safe electrical connections.
The K-Factor nonlinear design targets harmonic currents, reducing insulation stress and overheating. The ventilated construction supports a 150°C rise, improving reliability for drives, UPS systems, and data-center equipment where harmonic distortion is common. This results in longer service life and lower maintenance costs in demanding applications.
Yes. It supports standard 480 V three-phase systems with a 220Y/127 V secondary suitable for MCCs and control panels. The 45 kVA rating aligns with typical industrial switchgear, and voltage taps allow adjustment for feeder voltage variations, facilitating integration with both Eaton and third-party gear.
The N48M31T12CU carries UL Listed safety certification for distribution transformers. The warranty provides one year from installation or eighteen months from shipment, whichever occurs first. This coverage supports commissioning, field service, and long-term maintenance planning, helping mitigate procurement and reliability risks.
Prepare for a 23.42 in depth, 48.56 in height, and 28.22 in width footprint with an approximate 1110 lb weight. Electrical parameters include 480 V primary, 220Y/127 V secondary, 60 Hz, with taps at +2.5% FCAN and -2.5% FCBN. Ensure proper enclosure (WS19) and ventilation, plus site-specific clearance per code.