Eaton NT20P11S37CUEE Transformer - UL Listed, NEMA TP-1
Part Number: NT20P11S37CUEE
Quick Summary
Eaton NT20P11S37CUEE is a high-capacity transformer for reliable power distribution in industrial facilities. Engineers often wrestle with voltage swings and space constraints while keeping downtime to a minimum. UL Listed and NEMA TP-1 compliant, plus NEMA TP-1 efficient design, help meet regulatory and energy targets. Copper windings, multiple voltage taps, and a robust 37.5 kVA rating deliver reliable performance with flexible installation. In practice, this transformer minimizes energy losses while meeting safety standards, reducing total cost of ownership. It also integrates with Eaton's Transformer Flex Center for easy configuration and ongoing support across job sites. With 60 Hz operation, copper windings deliver efficiency in varied industrial environments.
Product Information
Extended Description
NT20P11S37CUEE 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, 37.5 kVA, Copper windings, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
NT20P11S37CUEE
UPC
786680040221
Product Length/Depth
23.84 in
Product Height
42.03 in
Product Width
24.22 in
Product Weight
764 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
Copper
Frame
819
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
37.5 kVA
Phase
Single-phase
Primary voltage
240 x 480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Special features
Electrostatically shielded
Weathershield
WS16
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - NT20P11S37CUEE
Feature → Business Impact → Application: The K-Factor nonlinear ventilated design manages nonlinear loads with reduced voltage distortion, improving equipment reliability and reducing unplanned downtime in automation panels. This translates to steadier processes and lower maintenance costs in manufacturing lines. Feature → Application: Copper windings and a 37.5 kVA rating deliver high current handling with minimal copper loss, boosting overall efficiency in control cabinets and power distribution enclosures. Feature → Application: Tap changes (1 at +5%, 2 at -5% and additional ±2.5%) provide voltage regulation across fluctuating supplies, minimizing equipment stress in plants with variable utility pressure. Feature → Application: The 150°C rise specification supports dense installations in confined spaces, helping engineers fit transformers into existing switchgear footprints. Feature → Application: Electrostatically shielded construction and WS16 weather protection enhance reliability in outdoor or harsh indoor environments, reducing corrosion risks and service calls. Feature → Application: UL Listed and NEMA TP-1 compliant design ensures compliance with industry standards, simplifying procurement and commissioning for regulated facilities. Feature → Application: Copper windings, robust frame 819, and a weight of 764 lb reflect a durable asset with long service life, suitable for critical automation and process lines.
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FAQs
Plan for a 23.84 in depth, 42.03 in height, and 24.22 in width footprint with adequate clearance for ventilation. The unit weighs about 764 lb and is designed for rugged environments with WS16 weather protection. Ensure shore power is 60 Hz, primary 240/480 V, and secondary 120/240 V, with proper mounting to support the frame and taps.
The transformer employs a K-Factor nonlinear ventilated design to better accommodate nonlinear loads, reducing voltage distortion. With taps at +5% and -5% (plus ±2.5% paths), it maintains stable secondary voltage. Its 37.5 kVA rating and copper windings minimize losses, resulting in improved efficiency and reduced heat generation under dynamic industrial loads.
Yes. The NT20P11S37CUEE is well-suited for control panels, machine rooms, and localized power distribution in automation setups. Its single-phase design, regulatory compliance (UL Listed, NEMA TP-1), and efficient performance support reliable operation of critical equipment, while the copper windings and taps provide responsive voltage regulation for sensitive drives and controllers.
This transformer is UL Listed and NEMA TP-1 compliant, with a NEMA TP-1 efficient designation. These certifications support safe operation, energy efficiency, and easier procurement in regulated facilities. The design also features electrostatic shielding and WS16 weather protection for enhanced reliability in both indoor and outdoor installations.
The NT20P11S37CUEE delivers predictable energy efficiency with copper windings and a robust 37.5 kVA capacity, reducing energy losses over time and lowering operating costs. Minimal maintenance is required due to its solid-state insulation and ventilation design. A long service life, combined with regulatory compliance, supports favorable total cost of ownership in continuous operation environments.