Eaton NT20P11S15CUEE Transformer - UL Listed
Part Number: NT20P11S15CUEE
Quick Summary
The Eaton NT20P11S15CUEE transformer is a single-phase power device designed for industrial control panels and distribution systems to reliably convert 240/480 V to 120/240 V. This model addresses voltage fluctuations and equipment sensitivity by offering precise taps and robust copper windings. It is UL Listed, NEMA TP-1 compliant, and noted as NEMA TP-1 efficient, aligning with safety and energy benchmarks. The design supports a 15 kVA rating with electrostatic shielding and a compact footprint suitable for confined enclosures, aiding installation planning. In practice, this enables predictable performance, easier procurement, and reduced commissioning risk for power distribution teams seeking dependable, standards‑compliant transformers.
Product Information
Extended Description
NT20P11S15CUEE 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, 15 kVA, Copper windings, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
NT20P11S15CUEE
UPC
786680040207
Product Length/Depth
18.39 in
Product Height
31.3 in
Product Width
22.89 in
Product Weight
283 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
816
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
15 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
WS11
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - NT20P11S15CUEE
Feature: K-Factor nonlinear ventilated transformer with KT-13 design and multiple taps. Benefit: Improves voltage regulation under harmonic and transient conditions, reducing thermal stress and extending equipment life. Application: Ideal for variable-load industrial controls and machinery power feeds where consistency matters for accuracy and uptime. The 15 kVA rating at 60 Hz provides scalable capacity for motors, controls, and instrumentation without over‑sizing. Feature: Copper windings and electrostatic shielding. Benefit: Higher efficiency, lower leakage inductance, and enhanced insulation integrity for rugged environments. Application: Panel builds in manufacturing lines and distribution centers. Feature: Frame 816, dimensions 18.39 in × 22.89 in × 31.3 in with a 283 lb weight. Benefit: Stable mounting and predictable enclosure footprint, simplifying installation in service bays and equipment rooms. Application: Retrofit projects or new installations where space and load planning matter. Feature: Tap size options (+5%, -5%, +2.5%, -2.5%). Benefit: Maintains output within tolerance amid input fluctuations, reducing knock-on effects on downstream devices. Application: Plants with fluctuating supply voltage or extended cable runs. Feature: Weathershield WS11 and electostatic shielding. Benefit: Improved environmental protection and reduced corona risk in damp or dirty environments. Application: Outdoor or semi-enclosed switchgear rooms where weather exposure could otherwise impact performance. Certification/Compliance: UL Listed and NEMA TP-1 compliant with NEMA TP-1 efficiency notes. Benefit: Streamlined qualification for regulated facilities and reduced risk during audits. Application: Utilities, process industries, and facilities requiring formal compliance.
Get a Quick Quote for a Eaton NT20P11S15CUEE
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton NT20P11S15CUEE?
Enquire Now
FAQs
Installation should begin with de-energizing the panel and confirming adequate clearance. Plan for the 18.39 in depth, 22.89 in width, and 31.3 in height footprint and the 283 lb weight. Mount on a rigid surface compatible with the 816 frame, connect the 240/480 V primary and 120/240 V secondary leads with copper windings, and set taps with care. Follow UL/TP-1 guidelines and secure shielding and WS11 weather protection as required.
The NT20P11S15CUEE is a single-phase transformer rated at 15 kVA, with a primary of 240/480 V and a secondary of 120/240 V. It operates at 60 Hz and features copper windings. Tap settings include one at +5%, two at -5%, two at +2.5%, and four at -2.5%, enabling voltage regulation under fluctuating supply conditions.
Yes. The NT20P11S15CUEE carries UL Listed certification and is NEMA TP-1 Compliant. It is also noted as NEMA TP-1 efficient in catalog notes, supporting energy‑savvy installations and simplifying regulatory reviews for industrial facilities and system integrators.
Tap adjustments alter the transformer turns and thus the output voltage to compensate for line fluctuations. With taps of +5% FCAN, -5% FCBN, +2.5% FCAN, and -2.5% FCBN, you can correct voltage drift to maintain stable 120/240 V secondary output. Always de-energize the system before changing taps, verify with a calibrated meter, and document changes for maintenance records.
Key lifecycle advantages include a 15 kVA capacity suitable for growing loads, electrostatic shielding and copper windings for durability, and a robust 150 °C rise rating to tolerate thermal stress. The WS11 Weathershield and U/L compliance reduce maintenance and risk, while the compact 816 frame and weight of 283 lb simplify site planning, mounting, and service access, delivering lower total cost of ownership.