Eaton NT20P11S99EE Transformer - UL Listed, NEMA TP-1
Part Number: NT20P11S99EE
Quick Summary
The Eaton K-Factor nonlinear ventilated transformer is a reliable 100 kVA single-phase power source for distributed control and automation panels. Engineers often struggle with voltage tap configurations, thermal rise, and space constraints in compact panels. It is UL Listed and NEMA TP-1 compliant, with catalog notes noting NEMA TP-1 efficiency. Primary is 240/480 V, secondary 120/240 V, 60 Hz, 100 kVA, designed for ease of installation in modern automation systems, delivering performance and peace of mind. This translates to lower total cost of ownership through reduced losses, easier procurement, and faster panel integration. In demanding environments, its lightweight aluminum coil and electrostatic shielding support safer, cooler operation.
Product Information
Extended Description
NT20P11S99EE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (1-phase), PV 240 x 480V, Taps: 1 at +5%/2 at -5% x 2 at +2.5%/4 at -2.5%, SV 120/240V, 150°C rise, 100 kVA, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
NT20P11S99EE
UPC
786680043581
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 in
Product Weight
0.001 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
Tap size
1 at +5% FCAN, 2 at -5% FCBN x 2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
100 kVA
Phase
Single-phase
Primary voltage
240 x 480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Special features
Electrostatically shielded
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - NT20P11S99EE
Feature: K-Factor nonlinear ventilated design improves handling of non-linear loads and harmonics. Business Impact: Greater reliability under non-linear drive currents, reduced overheating risk, and improved life cycle performance. Application: Drives and power distribution in automation panels. The Eaton solution supports efficiency gains and regulatory compliance for mission-critical systems. Feature: Adjustable voltage taps to accommodate supply variation. Business Impact: Better voltage regulation and panel stability, minimizing nuisance tripping and equipment stress. Application: Control cabinets with mixed loads, including servo drives and PLC power rails. Feature: 240/480 V primary and 120/240 V secondary with 60 Hz operation. Business Impact: Standardized, plug-and-play integration with common utility and MCC infrastructure, reducing engineering time. Application: Machine control panels and distributed power buses. Feature: Aluminum coil construction and electrostatic shielding. Business Impact: Weight reduction, safer handling, improved heat dissipation, and EMI protection. Application: Compact enclosures and exposed installations in harsh environments. Feature: Compliance and certification package (UL Listed, NEMA TP-1 Compliant, NEMA TP-1 Efficient). Business Impact: Simplified procurement, faster regulatory approvals, and lower compliance risk. Application: Industrial facilities requiring validated efficiency and safety standards. Feature: 150 °C rise rating and robust enclosure features. Business Impact: Enhanced thermal resilience in high-ambient installations, reducing derating needs. Application: Enclosed switchgear and dense control panels. Feature: Warranty and support framework (one-year from installation or 18 months from shipment). Business Impact: Clear ownership and predictable maintenance planning, lowering total cost of ownership. Application: Asset management programs and long-term ROI planning.
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FAQs
When installing NT20P11S99EE in retrofit panels, provide adequate ventilation around the unit to support the 150 °C rise rating, ensure clearances per enclosure guidelines, and plan for straightforward 240/480 V to 120/240 V interconnections. Leverage its aluminum coil, electrostatic shielding, and 60 Hz operation to minimize retrofit risk, with UL Listed assurance and NEMA TP-1 compliance guiding integration.
The K-Factor nonlinear design targets non-linear harmonic content, improving energy distribution stability and reducing overheating under pulsed or high-harmonic loads. This translates to more reliable voltage regulation, longer transformer life, and lower nuisance trips in drives and CNC controllers commonly found in automation panels.
Yes. With a 100 kVA rating, single-phase configuration, 240/480 V primary, and 120/240 V secondary, this transformer is well-suited for machine control panels and automation rack distributions. Its taps provide fine voltage compensation, while UL Listed and NEMA TP-1 compliance support safe, regulated panel operation and simplified procurement.
The NT20P11S99EE is UL Listed and NEMA TP-1 compliant, with catalog notes indicating NEMA TP-1 efficiency. These certifications assure regulatory alignment, facilitate contractor approvals, and reduce vendor risk in regulated industrial environments, especially where energy efficiency and reliable control power are prerequisites.
Maintenance requirements are minimal due to solid-state insulation and robust construction; the unit carries a one-year warranty (or 18 months from shipment). ROI is driven by improved energy efficiency, reduced panel downtime, and faster commissioning, aided by the unit’s easy integration with 240/480 V mains and 120/240 V control circuits.