Eaton N48M31T33CU KFactor nonlinear transformer - UL Listed
Part Number: N48M31T33CU
Quick Summary
Eaton N48M31T33CU KFactor nonlinear ventilated transformer is designed for three-phase power distribution. This solution addresses the daily challenges of voltage stability and thermal management in demanding industrial environments. It carries UL Listed certification to support safe installation in panel boards and switchgear. The design leverages copper windings, a 150°C rise rating, and electrostatic shielding to improve reliability and protect sensitive equipment. For teams pursuing scalable power management, this transformer aligns with standard frame and tap configurations while delivering tangible efficiency gains and robust protection across facilities.
Product Information
Extended Description
N48M31T33CU Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 220Y/127V, 150°C, 45 kVA, Cu windings, Elec. Shield, Frame: 919E, uses WS35
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M31T33CU
UPC
786680087493
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
3233 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
919E
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
WS35
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M31T33CU
Feature: K-13 design and nonlinear performance improve fault tolerance and voltage regulation in fluctuating load conditions. Business Impact: Reduced risk of equipment damage and improved process stability, enabling smoother production lines and better uptime in manufacturing environments. Application: Suitable for mid-size industrial plants and critical electrical spaces where precise voltage control is essential. Feature: Ventilated cooling with copper windings enhances heat dissipation during peak loads. Business Impact: Lower thermal stress, extended equipment life, and the potential to operate near nameplate ratings for longer periods. Application: Data centers and automation floors with variable load profiles. Feature: Tap changes (2 at +2.5% FCAN, 4 at -2.5% FCBN) provide voltage regulation without external hardware. Business Impact: Faster commissioning and tighter voltage margins, reducing the need for additional regulation gear. Application: Sites with fluctuating supply or long feeder runs. Feature: Frame 919E and WS35 weathershield enable rugged, compliant installations inside or outside enclosures. Business Impact: Easier site integration and protection against weather, dust, and corrosion, lowering commissioning risk. Application: Outdoor substations and factory exteriors. Feature: Electrostatic shield and copper coil construction improve EMI protection and efficiency. Business Impact: Lower interference with nearby controls and motors, enhanced energy efficiency, and compliance with stringent safety standards. Application: Complex automation installations and machinery fleets. Feature: 45 kVA rating at 60 Hz with primary 480 V and secondary 220Y/127 V supports versatile distribution. Business Impact: Simplified power sourcing for multi-load environments, reduced need for oversized transformers, and improved space utilization. Application: OEM systems and plant-wide power distribution networks. Warranty and service: One-year warranty from installation or eighteen months from shipment, offering confidence in long-term performance and planned maintenance planning. Application: Typical asset management programs and OEM procurement cycles benefit from defined service terms.
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FAQs
Yes. The N48M31T33CU is designed around frame 919E and WS35 weather shield, enabling versatile indoor or outdoor installations. It uses copper windings and an electrostatic shield to maintain performance in variable ambient conditions. When planning mounting, verify available space for the transformer’s footprint and ensure proper access for the 480 V primary, 220Y/127 V secondary, and the tap connections (+2.5% FCAN and -2.5% FCBN).
Key specs include a 45 kVA rating, 60 Hz frequency, three-phase configuration, 480 V primary, 220Y/127 V secondary, copper windings, and an electrostatic shield. Temperature rise is rated at 150 °C, with copper windings delivering higher efficiency. Taps allow voltage adjustment: 2 taps at +2.5% and 4 taps at -2.5%, supporting load- and source-variance without external regulation.
This unit is well-suited for industrial facilities, manufacturing lines, and data centers requiring stable voltage under fluctuating loads. Its K-Factor nonlinear design helps control harmonic effects and energy distribution in complex power networks. The 480 V to 220Y/127 V configuration supports multiple downstream circuits, while the WS35 weather shield enables outdoor or rugged environments without compromising performance.
The N48M31T33CU carries UL Listed certification, indicating adherence to established electrical safety standards for distribution transformers. This simplifies approvals for panel boards and switchgear integrations and supports safe operation in a wide range of facilities. Always verify site-specific compliance requirements and ensure proper labeling, clearances, and protection measures in accordance with local codes.
Eaton provides a one-year warranty from installation or eighteen months from shipment, whichever occurs first, reducing risk during early operation. For ROI, prioritize the transformer’s ability to regulate voltage, improve efficiency with copper windings, and minimize downtime through robust cooling and shielding. Regular inspection of windings, taps, and enclosure integrity supports long-term reliability.