Eaton NT20P11S15XZCU Nonlinear Transformer - UL Listed
Part Number: NT20P11S15XZCU
Quick Summary
The Eaton NT20P11S15XZCU is a nonlinear transformer designed for power management in control panels and industrial equipment. It helps mitigate voltage distortion under nonlinear loads, reducing nuisance tripping and overheating in critical automation circuits. This unit carries UL Listed safety certification and features a durable NEMA 2 enclosure for indoor, dust-resistant service, supporting reliable operation in everyday plant environments. With a 15 kVA rating, single-phase design, and copper windings, it delivers robust performance while keeping installation and maintenance straightforward. Its 240/480V primary and 120/240V secondary outputs align with common industrial power architectures, delivering predictable regulation and compatibility with Eaton’s standard accessories and installation bases.
Product Information
Extended Description
NT20P11S15XZCU Eaton: Nonlinear vent. transformer, KS-13, Single-phase, Prim. voltage: 240 x 480V, Taps: 1 at +5% FCAN, 2 at -5% FCBN x 2 at +2.5% FCAN, 4 at -2.5% FCBN, Sec. voltage: 120/240V, 150°C, 15 kVA, Cu windings, FR818, 261A, WS11, ES, 50/60 Hz, NEMA 2
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
NT20P11S15XZCU
UPC
786680103261
Product Length/Depth
20.36 in
Product Height
37.59 in
Product Width
22.89 in
Product Weight
442 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
UL Listed
Catalog Notes
Easy install base
Coil material
Copper
Enclosure
NEMA 2
Wiring connection
261A
Type
Nonlinear, ventilated transformer
Design
KS-13
Frame
818
Tap size
1 at +5% FCAN, 2 at -5% FCBN x 2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
50-60 Hz
Volt ampere rating
15 kVA
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 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 - NT20P11S15XZCU
Feature: 15 kVA single-phase power rating with primary 240/480V and secondary 120/240V. Business Impact: Enables efficient voltage transformation for control panels and machine tools, reducing equipment stress and improving uptime. Application: Used in panel boards and automation cabinets to power low-voltage controls from high-voltage sources. Feature: Tap settings including 1 at +5% FCAN, 2 at -5% FCBN, 2 at +2.5% FCAN, 4 at -2.5% FCBN. Business Impact: Provides precise voltage regulation under varying supply conditions, lowering the risk of misoperation and relay chatter. Application: Seamless tuning during commissioning and after load changes in manufacturing lines. Feature: Copper windings and KS-13 nonlinear design. Business Impact: Improves thermal performance and efficiency under nonlinear loading, reducing energy waste and extending service life. Application: Critical for drives and PLC power rails where harmonic content is common. Feature: NEMA 2 enclosure with WS11 weathershield and electrostatic shielding. Business Impact: Delivers reliable indoor protection against dust and incidental moisture, while minimizing EMI/RFI in sensitive control electronics. Application: Best suited for control panels in factory floors and enclosed electrical rooms. Feature: 50/60 Hz operation, 150°C rise rating, and 15 kVA capacity. Business Impact: Ensures compatibility with broad utility grids and predictable thermal margins, supporting long-term reliability in mixed environments. Application: Suitable for general plant power distribution and equipment that requires stable low-voltage supply. Feature: UL Listed and copper coil construction with FR818 designation. Business Impact: Compliance with electrical safety standards and robust winding performance, reducing maintenance cycles and warranty claims. Application: Ideal for OEM assemblies and retrofit projects seeking proven, safe power conversion.
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FAQs
Begin by selecting an appropriate mounting base compatible with the NT20P11S15XZCU's frame 818 and NEMA 2 enclosure. Mount the unit securely, connect the primary to 240/480V supply using the 261A wiring connection, then wire the secondary to 120/240V loads. Ensure proper clearance for cooling and verify taps are set per load requirements. Follow Eaton's Catalog Notes for the Easy Install Base and torque specs to prevent overheating.
The transformer provides a 240/480V primary and a 120/240V secondary. This configuration supports common control circuits and drives while allowing voltage regulation via the listed tap settings to accommodate supply fluctuations in indoor plant environments.
Yes. The NT20P11S15XZCU is designed for 50/60 Hz operation and is rated at 15 kVA, single-phase. This makes it well-suited for a wide range of industrial controls, PLC power rails, and automation equipment that require stable low-voltage power from higher-voltage mains.
It uses a NEMA 2 enclosure with WS11 weather shield protection for indoor use, combined with an electrostatically shielded design to reduce EMI. This configuration helps keep dust and incidental moisture out of the core control area while minimizing interference with nearby instrumentation.
With copper windings and a robust KS-13 nonlinear design, the transformer delivers reliable performance with lower thermal stress under harmonic loads, translating to reduced maintenance intervals and longer service life. UL Listed certification provides safety assurance, while standard taps support easy commissioning and ongoing voltage control, contributing to lower lifecycle costs in panel assemblies.