Eaton NT20P11F37CUEE Transformer - UL Listed, NEMA TP-1 Efficient
Part Number: NT20P11F37CUEE
Quick Summary
Eaton NT20P11F37CUEE transformer delivers K-Factor nonlinear ventilation for robust power distribution in industrial facilities. End users often face voltage mismatches, heat buildup, and space constraints when installing transformers in compact enclosures. UL Listed, NEMA TP-1 compliant, and engineered for a 115°C rise with copper windings, this unit blends safety with performance. It supports a 240 x 480 V primary and 120/240 V secondary with selectable taps to accommodate distribution variations. For engineering teams, its rugged construction and efficient design translate into lower cooling loads, easier compliance, and reliable long-term operation.
Product Information
Extended Description
NT20P11F37CUEE 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, 115°C rise, 37.5 kVA, Copper windings, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
NT20P11F37CUEE
UPC
786680071454
Product Length/Depth
23.84 in
Product Height
42.03 in
Product Width
24.22 in
Product Weight
773 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
115 °C rise
Special features
Electrostatically shielded
Weathershield
WS16
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - NT20P11F37CUEE
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: K-Factor nonlinear transformer with ventilated design. Business Impact: Reduces harmonic stresses on upstream equipment and improves overall system reliability. Application: Suitable for sites with nonlinear loads such as drives and power electronics in manufacturing plants. Feature: 37.5 kVA single‑phase rating. Business Impact: Provides mid‑range power support for control panels and machine tools without oversizing. Application: Panelboards and machine shop equipment fed from 240/480 V mains. Feature: Tap options (1 at +5%, 2 at -5% x 2 at +2.5%, 4 at -2.5%). Business Impact: Maintains output voltage during line swings, reducing equipment stress and voltage flicker. Application: Facilities with fluctuating utility voltages. Feature: Copper windings. Business Impact: Enhances thermal performance and durability, lowering long‑term maintenance costs. Application: Environments with frequent start‑ups and higher fault current scenarios. Feature: Weather shield WS16 and electrostatic shielding. Business Impact: Enables outdoor or harsh‑environment installations with EMI suppression and protection. Application: Industrial outdoors, manufacturing yards, and rugged plant floors. Feature: Compliance, warranty and documentation. Business Impact: Improves risk management and procurement confidence with UL Listed, NEMA TP‑1 efficient designation, and a clear 1‑year/18‑month warranty. Application: Regulated facilities seeking audit‑ready hardware and robust supplier support.
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FAQs
Plan for adequate clearance, weight handling (773 lb), and ventilation. Mount on a compatible base using frame 819 rails, connect the 240/480 V primary and 120/240 V secondary conductors, and set the taps according to load conditions to maintain voltage and minimize overheating. Ensure UL listings and NEMA TP-1 compliance are referenced in commissioning.
The K-Factor nonlinear design minimizes harmonic stress on upstream circuits while the ventilated construction improves cooling under dynamic loads. Copper windings enhance thermal performance, and 60 Hz operation supports common industrial drives, inverters, and other nonlinear equipment, delivering stable voltage with reduced EMI risk.
Yes. The unit is UL Listed and NEMA TP-1 compliant, with NEMA TP-1 efficient notes in catalog documentation. These certifications help meet reliability, safety, and energy efficiency requirements for industrial power distribution installations.
Ideal for mid‑range power distribution in manufacturing lines, machine tool controllers, and data center auxiliary power feeds. The 37.5 kVA rating, 240 x 480 V primary, and 120/240 V secondary support reliable panelboard and control cabinet power, while taps accommodate voltage swings common in industrial environments.
Eaton provides a one‑year warranty from installation or eighteen months from shipment, whichever occurs first. Field and technical support are available, and the product documentation includes complete specifications, installation notes, and compliance certifications to assist maintenance planning and ROI calculations.