Eaton NT20P11S75 Transformer - UL Listed K-13 K-Factor
Part Number: NT20P11S75
Quick Summary
The Eaton NT20P11S75 transformer is a K-Factor nonlinear ventilated transformer used to stabilize voltage for critical loads in industrial facilities. Many facilities struggle with voltage sags, flicker, and transformer overheating that drive downtime and maintenance costs. It carries UL Listed certification for safety and reliability, with the K-13 design and 60 Hz operation aligning to common industrial codes; CE or IP ratings can be verified per project requirements. This solution delivers robust voltage regulation, compatible primary/secondary voltages, and scalable tap options, enabling predictable performance and minimized disruption for power distribution upgrades.
Product Information
Extended Description
NT20P11S75 Eaton: K-Factor nonlinear ventilated transformer K-13, Single-phase, PV: 240 X 480V, Taps: 1 at 0.05 FCAN, 2 at -0.05 FCBN X 2 at 0.025 FCAN, 4 at -0.025 FCBN, SV: 120/240V
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
NT20P11S75
UPC
786680024597
Product Length/Depth
33.97 in
Product Height
62.91 in
Product Width
29.97 in
Product Weight
1 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
Coil material
Aluminum
Type
Ventilated transformer
Design
K-13
Frame
821
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
Kva Rating
75 kVA
Phase
Single-phase
Primary voltage
240 V, 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 - NT20P11S75
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The K-13 K-Factor nonlinear design improves distortion handling in fluctuating loads, reducing nuisance tripping and service interruptions for sensitive equipment used in manufacturing lines and CNC operations. This translates to higher overall equipment effectiveness (OEE) and lower maintenance costs, especially in facilities with mixed motor and control loads. Feature → Business Impact → Application: 75 kVA single-phase rating with 240/480 V primary and 120/240 V secondary supports mid-size processing lines and equipment enclosures, enabling efficient step-down while preserving power quality in metalworking, plastics, and automated assembly environments. Feature → Business Impact → Application: Tap size options (+5% FCAN, -5% FCBN, ±2.5% variants) allow precise voltage regulation under fluctuating utility conditions, reducing line-side stress and extending transformer life in sectors with variable electrical demand. Feature → Business Impact → Application: Aluminum coil and ventilated design provide lower copper loss and superior heat dissipation, improving thermal margins and enabling longer runs of ventilation-safe operation in continuous duty settings such as packaging lines and distribution centers. Feature → Business Impact → Application: Electrostatic shielding adds EMI protection for nearby control gear and communication lines, supporting data integrity in automation cells, robotics workstations, and smart manufacturing floors. Feature → Business Impact → Application: UL Listed certification ensures safety compliance and supplier reliability for electrical distribution projects, reducing procurement risk and speeding audit readiness in factory modernization programs.
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FAQs
NT20P11S75 is a single-phase 75 kVA transformer with a 240/480 V primary and 120/240 V secondary. It uses an aluminum coil and a tall footprint with a frame 821. Plan for ventilation clearance, secure mounting, and proper cable routing to support the 60 Hz operation and tap options. Verify UL Listed compliance and consult Eaton’s installation guidelines for safe commissioning.
Key specs include a 75 kVA rating, single-phase configuration, 60 Hz operation, primary 240/480 V, secondary 120/240 V, and multiple taps: 1 at +5% FCAN, 2 at -5% FCBN, plus 2 at +2.5% FCAN and 4 at -2.5% FCBN. The K-Factor nonlinear design enhances disturbance handling, while the temperature rise is rated at 150 °C, supporting reliable operation under dynamic loads.
Yes, NT20P11S75 suits data centers, CNC machines, and manufacturing lines requiring stable voltage and EMI protection. Its K-Factor nonlinear profile helps manage harmonics and non-linear loading, while tap adjustments maintain voltage within tolerance during supply fluctuations. Its UL Listed certification supports compliance in industrial spaces, aiding uptime and limiting voltage-related equipment stress.
The transformer is UL Listed, which confirms safety and reliability per recognized electrical standards. While CE or IP ratings aren’t listed in the provided data, projects can confirm additional certifications with the supplier based on local codes. The UL certification helps streamline approvals and reduces compliance risk during audits and inspections.
Warranty is Eaton’s policy: one year from installation or eighteen months from shipment, whichever occurs first. The design minimizes downtime by improving power quality and reducing overheating risk, potentially lowering maintenance costs and extending equipment life. For ROI, consider energy losses, reduced trips, and impedance stability in mixed-load environments typical of industrial facilities.