Eaton NT48M29S21EE K-Factor nonlinear ventilated transformer - UL Listed
Part Number: NT48M29S21EE
Quick Summary
Eaton NT48M29S21EE K-Factor nonlinear ventilated transformer is a single-phase power solution for industrial control panels and data centers. Engineers often struggle with voltage stability, heat buildup, and space constraints when upgrading legacy transformers in critical systems. UL Listed and NEMA TP-1 compliant certifications provide safety and performance assurances, while the electrostatically shielded design helps minimize EMI in motor drives and console equipment. This model supports 480V to 208V distribution with a 22.5 kVA rating, delivering reliable transformer efficiency and easier compliance for modern power management and distribution needs.
Product Information
Extended Description
NT48M29S21EE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (1-phase), PV 480V, Taps: 2 at +2.5% /4 at -2.5%, SV 208V, 150°C rise, 22.5 kVA, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
NT48M29S21EE
UPC
786680075285
Product Length/Depth
20.36 in
Product Height
37.59 in
Product Width
22.89 in
Product Weight
372 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.
Compliances
NEMA TP-1 Compliant
Certifications
UL Listed
Catalog Notes
NEMA TP-1 efficient
Coil material
Aluminum
Frame
818
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
22.5 kVA
Phase
Single-phase
Primary voltage
480 V
Secondary Voltage
208 V
Temperature rise
150 °C rise
Special features
Electrostatically shielded
Weathershield
WS11
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - NT48M29S21EE
Feature → Business Impact → Application: The K-Factor nonlinear ventilated design addresses harmonic currents common in modern industrial loads, reducing overheating and improving voltage regulation, which translates to longer equipment life and fewer fan/maintenance interventions for control panels. This supports energy efficiency targets and lowers total cost of ownership in manufacturing lines and processing facilities. Application: Suitable for harmonics-heavy environments such as CNC machines, drives, and mixed-control architectures where clean power delivery is essential. Feature → Business Impact → Application: Primary voltage of 480 V and secondary 208 V enables seamless integration with standard plant power rails and downstream equipment, simplifying panel design and improving installation speed. Application: Ideal for retrofit projects in machine rooms, distribution boards, and data-center-adjacent facilities seeking reliable 480V to 208V conversion. Feature → Business Impact → Application: Tap changes at +2.5% and -2.5% provide precise voltage tuning to site conditions, improving voltage stability for sensitive loads and reducing nuisance trips. Application: Critical for control logic, PLCs, and instrumentation in fluctuating power environments. Feature → Business Impact → Application: 60 Hz operation, 22.5 kVA rating, and single-phase configuration deliver predictable transient response and scalable power for small-to-mid size automation cabinets, with consistent performance across shifts. Application: Suitable for panel boards, inventory control systems, and process automation racks. Feature → Business Impact → Application: Electrostatic shielding, WS11 weatherproofing, and a robust aluminum coil with a sturdy 818 frame provide EMI protection, weather resistance, and dependable service in demanding environments, reducing troubleshooting and field service calls. Application: Industrial facilities with equipment-emergency cooling, outdoor installations, or high EMI zones. Feature → Business Impact → Application: The 372 lb weight and the compact footprint relative to its 22.5 kVA rating support easier handling, installation, and fitment in crowded electrical rooms, enabling scalable deployment across multiple cabinets. Application: Multi-site deployments and retrofit projects where space optimization is crucial.
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FAQs
Install with proper clearance for ventilation, secure mounting in an 818 frame cabinet, and check weight (approximately 372 lb) to ensure suitable lifting arrangements. Ensure input and output terminations match 480 V primary and 208 V secondary ratings and maintain ambient temperatures within design limits to prevent overheating.
Key specs include 22.5 kVA VA rating, single-phase operation, 480 V primary, 208 V secondary, 60 Hz frequency, and a 150 °C rise. Taps are available at +2.5% and -2.5% to fine-tune voltage, and the unit is electrostatically shielded for EMI protection.
Yes. It features a K-Factor nonlinear ventilated design that mitigates harmonic effects, helping maintain voltage quality for drives and controllers. The electrostatic shielding further reduces EMI, improving reliability in motor drives and PLC-equipped panels.
The NT48M29S21EE is UL Listed and NEMA TP-1 compliant, with catalog notes indicating NEMA TP-1 efficiency. These certifications support compliance with safety and efficiency requirements in many industrial facilities.
By delivering stable 480 V to 208 V power with high efficiency (NEMA TP-1 compliant) and reduced heat generation, it lowers cooling loads and energy losses, reducing maintenance frequency and downtime in automation cabinets and process lines.