Eaton NT48M11S75CUEE Transformer - UL Listed, NEMA TP-1

Part Number: NT48M11S75CUEE
Manufacturer
Eaton
Part number
NT48M11S75CUEE

Quick Summary

NT48M11S75CUEE is a K-Factor nonlinear ventilated transformer for critical power distribution in industrial facilities. Engineers often grapple with efficiency losses, voltage drift, and limited tap options in space-constrained switchgear rooms. UL Listed and NEMA TP-1 compliant, with a NEMA TP-1 efficiency designation, these certifications support safety, reliability, and code conformity. The design delivers predictable performance for 75 kVA loads at 480 V primary and 120/240 V secondary, helping facilities improve transformer efficiency, reduce energy waste, and simplify procurement for industrial power distribution projects.

Product Information

Extended Description

NT48M11S75CUEE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (1-phase), PV 480V, Taps: 2 at +2.5% /4 at -2.5%, SV 120/240V, 150°C rise, 75 kVA, Copper windings, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
NT48M11S75CUEE
UPC
786680065002
Product Length/Depth
33.97 in
Product Height
62.91 in
Product Width
29.97 in
Product Weight
1078 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
821
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
75 kVA
Phase
Single-phase
Primary voltage
480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Special features
Electrostatically shielded
The K-Factor nonlinear ventilated design reduces harmonic heating under nonlinear loads, which translates into improved reliability and lower cooling energy requirements in demanding production environments. This directly lowers operating costs while maintaining voltage stability for sensitive equipment in manufacturing lines and data centers. The single-phase construction with a 75 kVA rating provides a compact footprint for space-constrained electrical rooms, enabling easier retrofits and scalable distribution.Tap options include 2 taps at +2.5% and 4 taps at -2.5%, delivering enhanced voltage regulation under fluctuating loads. This feature minimizes downstream equipment stress and improves performance in facilities where motor start-ups or irregular loads are common, reducing downtime and extending asset life. It’s particularly advantageous in warehouse automation, return paths for feeders, and mission-critical lighting systems.Copper windings and a robust frame (821) support high reliability and heat dissipation in tough environments. Copper conductors offer excellent conductivity and durability, while the ventilated design aids cooling at higher ambient temperatures, preserving efficiency. This is beneficial in heavy-use production lines, climate-controlled data centers, and other installations requiring consistent transformer performance.The 150 °C rise rating and 60 Hz operation align with standard U.S. industrial power systems, ensuring compatibility with common electrical infrastructure. The transformer’s 480 V primary and 120/240 V secondary arrangement simplifies service wiring and minimizes the need for transformers in multi-vendor setups, reducing procurement complexity and sparing field engineering time. The electrostatically shielded feature further reduces EMI risk in sensitive control cabinets and communication racks.UL Listed and NEMA TP-1 compliance, along with NEMA TP-1 efficient designation, confirm safety, performance, and energy-conscious design. The unit’s weight of 1078 lb and dimensions (33.97 in L x 29.97 in W x 62.91 in H) support straightforward installation in standard electrical rooms using conventional rigging and mounting practices, easing project schedules and commissioning.

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FAQs

Plan for a single-phase 75 kVA transformer with a 480 V primary and 120/240 V secondary. Ensure adequate space for the unit’s dimensions (33.97 in L x 29.97 in W x 62.91 in H) and weight of 1078 lb. Provide proper lifting gear, ventilation, and clearance for taps and wiring access. Verify UL Listed and NEMA TP-1 compliance in the panel schedule.
The transformer offers 2 taps at +2.5% and 4 taps at -2.5% for voltage regulation under varying loads, improving stability for sensitive motors and controls. Its K-Factor nonlinear design supports better efficiency under non-linear loading, contributing to reduced cooling loads and lower energy costs in continuous operation environments.
Manufacturing facilities, distribution centers, and data centers with space constraints benefit from the NT48M11S75CUEE. Its compact footprint, single-phase 75 kVA rating, and robust voltage regulation suit critical plant loads, motor drives, and essential control circuits, enabling reliable power distribution and easier retrofits in retrofit or greenfield projects.
The NT48M11S75CUEE is UL Listed and NEMA TP-1 Compliant, with NEMA TP-1 efficiency designation. These certifications support electrical safety, code compliance, and energy-efficiency requirements in regulated facilities, helping satisfy procurement standards and minimizing compliance-related project risks.
Warranty terms are 1 year from installation or 18 months from shipment, whichever occurs first. Routine maintenance includes verifying tap connections, inspecting cooling paths, and ensuring ventilated clearance. With copper windings and a rigid frame, the unit is designed for long service life, reducing unscheduled downtime and maintenance costs.