Eaton N57M28T12CUEE Transformer - UL Listed
Part Number: N57M28T12CUEE
Quick Summary
Eaton N57M28T12CUEE transformer provides reliable voltage conversion for industrial power distribution in manufacturing facilities. Engineers often face the challenge of balancing efficiency, protection, and space when upgrading aging transformers. This unit delivers UL Listed and NEMA TP-1 compliant performance, with electrostatic shielding and WS19 weather protection to withstand demanding plant environments. Featuring copper windings, a 575 V primary and 208Y/120 V secondary, it supports scalable power for equipment, automation cabinets, and critical control panels, while delivering NEMA TP-1 efficiency and a favorable total cost of ownership. For installations requiring precise voltage regulation, the 2 at +2.5% and 4 at -2.5% taps add valuable flexibility, reducing downtime and maintenance costs over the life of the system.
Product Information
Extended Description
N57M28T12CUEE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (3-phase), PV 575V, Taps: 2 at +2.5% /4 at -2.5%, SV 208Y/120V, 150°C rise w/ 200°C insulation systeam, 112.5 kVA, Copper windings, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N57M28T12CUEE
UPC
786680047954
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
1120 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
916A
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
112.5 kVA
Phase
Three-phase
Primary voltage
575 V
Secondary Voltage
208 Y/120 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS19
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N57M28T12CUEE
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: K-Factor nonlinear ventilated transformer design reduces harmonic impact and improves system reliability. Business Impact: Lower distortion, enhanced protection for sensitive loads, and smoother operation of downstream drives and PLCs. Application: Automation lines and servo-driven machinery benefit from predictable voltage profiles and improved uptime. Feature: Copper windings with a 150 °C rise and a 200 °C insulation system. Business Impact: Superior thermal performance in demanding environments, enabling longer service life and reduced risk of insulation failure. Application: Heavy-duty manufacturing cells and process control panels in facilities with hot or crowded electrical racks. Feature: Tap settings of 2 at +2.5% and 4 at -2.5%. Business Impact: Precise voltage regulation under fluctuating loads, minimizing equipment stress and improving control accuracy. Application: Plants with long feeder runs or variable loads, where voltage drop is a constant concern. Feature: Three-phase, 60 Hz operation at 112.5 kVA. Business Impact: Consistent power delivery to multiple loads from a single transformer, simplifying engineering calculations and reducing footprint. Application: Multi-equipment control rooms, machine tacks, and distribution boards. Feature: Electrostatically Shielded construction and WS19 weather shield. Business Impact: Enhanced safety and environmental protection, enabling installation in exposed or outdoor environments while maintaining performance. Application: Outdoor substations, switchgear rooms, and weather-exposed installations. Feature: UL Listed and NEMA TP-1 efficient with catalog notes for efficiency. Business Impact: Compliance-driven procurement reduces risk and supports efficient energy use and compliance reporting. Application: Compliance-conscious facilities and OEM integrations seeking reliable, standards-aligned power conversion.
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FAQs
This transformer measures 23.42 in deep, 28.22 in wide, and 48.56 in tall with a weight of 1120 lb. Plan for adequate clearance and ventilation, secure mounting to the 916A frame, and account for the WS19 weather shield if outdoors. Use proper lugs and shielded connections to maintain UL and NEMA TP-1 compliance.
It is a three-phase, 60 Hz device with a 112.5 kVA rating, 575 V primary, and 208Y/120 V secondary. Winding material is copper, with taps at +2.5% and -2.5%. Temperature rise is 150 °C, and insulation system rated at 200 °C. This combination supports stable power delivery for sensitive loads and controls.
Yes, it incorporates Electrostatically Shielded construction and WS19 Weathershield, plus UL Listed and NEMA TP-1 efficiency. These features enable reliable operation in outdoor or dust-laden environments while maintaining protection for critical equipment and ensuring regulatory compliance.
The unit comes with Eaton’s warranty policy of one year from installation or eighteen months from shipment, whichever occurs first. Copper windings and robust insulation reduce routine maintenance needs, while the compact, shielded design lowers risk of fault-induced downtime. Regular inspections of connections and cooling paths are recommended for long-term reliability.
The transformer provides taps at +2.5% and -2.5% to compensate for voltage drop or supply fluctuations along feeders. This capability improves control precision, reduces motor heat, and minimizes nuisance tripping in automation gear, yielding better overall system efficiency and reduced energy waste in fluctuating load conditions.