Eaton N48M31B45 Nonlinear Ventilated Transformer - K-Factor
Part Number: N48M31B45
Quick Summary
The Eaton N48M31B45 nonlinear transformer delivers reliable three-phase power distribution for demanding industrial applications. When plant loads swing and nonlinear equipment creates voltage stress, this unit maintains voltage regulation and protects critical motors and drives. Certification details are available from the manufacturer; in practice, standards such as SIL, CE, and IP ratings are commonly specified and verified. With 60 Hz operation, 45 kVA rating, and robust construction featuring aluminum windings, electrostatic shielding, and an WS19 weathershield, it supports efficient, scalable power delivery. For automation networks and plant substations, the N48M31B45 helps reduce downtime, improve energy management, and simplify integration with existing switchgear.
Product Information
Extended Description
N48M31B45 Eaton: Eaton Nonlinear ventilated transformer KT-13 Three-phase 480 DELTA 2 at +2.5% FCAN 4 at -2.5% FCBN 220Y/127V 80°C 45 kVA Aluminum windings 916A 283B WS19 Electrostatically shielded 60 Hz
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M31B45
UPC
786680111648
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
768 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
Contact Manufacturer
Coil material
Aluminum
Wiring connection
283B
Type
Nonlinear ventilated transformer
Design
KT-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
80 °C rise
Special features
Electrostatically shielded
Weathershield
WS19
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M31B45
Feature: K-Factor nonlinear ventilated transformer; Business Impact: reduces harmonic distortion and improves power quality for nonlinear loads, enhancing equipment life and uptime; Application: drives, rectifiers, and mixed-load environments in manufacturing floors. Feature: 45 kVA three-phase rating with 480 V primary and 220Y/127 V secondary; Business Impact: enables compact, reliable distribution from main feeders to control panels, minimizing space and installation complexity; Application: panelboards and motor control centers. Feature: Tap changer with 2 taps at +2.5% and 4 taps at -2.5% FCAN/FCBN; Business Impact: maintains voltage within tolerance during load changes, reducing overheating and nuisance tripping; Application: plant-wide voltage regulation under varying loads. Feature: Aluminum windings and electrostatic shielding; Business Impact: reduces thermal stress and improves protection against EMI, supporting longer service life; Application: outdoor substations and high-murge environments. Feature: WS19 weather shield and KT-13 frame (916A) construction; Business Impact: rugged outdoor performance and standardized fit with existing Eaton catalog; Application: harsh environments and retrofit projects. Feature: 60 Hz operation, 80 °C rise, and 23.42 in × 28.22 in × 48.56 in footprint with 768 lb weight; Business Impact: defines installation footprint, mechanical support needs, and cooling requirements for data centers, plants, and switchgear rooms; Application: fixed installations with strict space and thermal constraints. Feature: Electrostatic shielding and 480 V to 220Y/127 V conversion capability; Business Impact: enhances safety and voltage stability across distribution networks; Application: critical loads such as pumps, fans, and drives requiring clean power. Feature: Included warranty and manufacturer support; Business Impact: reduces long-term maintenance risk and provides assurance for procurement cycles; Application: capital projects and equipment refresh programs.
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FAQs
When planning installation, account for the transformer’s substantial size and weight (768 lb) and its footprint (23.42 in L × 28.22 in W × 48.56 in H). Ensure structural support, proper clearance for cooling, and accessible connections. The unit’s WS19 weather shield and electrostatic shielding improve environmental tolerance, while the KT-13 frame aids compatibility with existing Eaton gear.
The N48M31B45 employs a K-Factor nonlinear design that mitigates harmonic-induced voltage distortion, supporting stable operation of drives and nonlinear equipment. With a 45 kVA rating, 480 V primary, and 220Y/127 V secondary, the device uses a tap changer (2 taps at +2.5%, 4 taps at -2.5%) to maintain regulation as load conditions evolve in continuous production environments.
Yes, the transformer features an WS19 weather shield and electrostatic shielding, along with aluminum windings and robust KT-13 frame construction. While designed for rugged environments, verify site conditions and ensure appropriate mounting and enclosure compliance. The WS19 shield supports weather resistance, while aluminum windings offer favorable thermal characteristics.
Certification details for the N48M31B45 are provided by Eaton on request. While the data sheet notes certifications as ‘Contact Manufacturer,’ procurement and engineering teams should coordinate with Eaton to confirm SIL, CE, IP, or other standards applicable to their specific installation and regional requirements.
The product is covered by Eaton’s policy 25-000, offering one year from the date of installation or eighteen months from shipment, whichever occurs first. This warranty supports parts and workmanship with manufacturer-backed service options, helping to minimize downtime and protect the capital investment over the initial years of operation.