Eaton NT48M12S25CUEE Transformer - UL Listed
Part Number: NT48M12S25CUEE
Quick Summary
Eaton NT48M12S25CUEE transformer provides reliable 480V-to-120V power for critical control panels in industrial environments. Engineers often contend with nonlinear loads, heat, and voltage drift that degrade performance and uptime. This model is UL Listed and NEMA TP-1 compliant, with a TP-1 efficiency note that supports regulatory alignment and energy savings. With a 25 kVA rating and copper windings, it enables scalable, efficient power distribution, while the electrostatic shield and WS11 weather shield enhance protection in harsh facilities. Its multiple taps support on-site voltage variation, helping maintain equipment life across shifts and loads, reducing waste heat and insulation stress.
Product Information
Extended Description
NT48M12S25CUEE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (1-phase), PV 480V, Taps: 2 at +2.5% /4 at -2.5%, SV 120V, 150°C rise, 25 kVA, Copper windings, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
NT48M12S25CUEE
UPC
786680093944
Product Length/Depth
20.36 in
Product Height
37.59 in
Product Width
22.89 in
Product Weight
191 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
818
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
25 kVA
Phase
Single-phase
Primary voltage
480 V
Secondary Voltage
120 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 - NT48M12S25CUEE
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The K-Factor nonlinear ventilated design handles nonlinear loads common to drives and rectifiers, reducing overheating and improving uptime in automation cabinets; Application: machine startup panels and motor-control centers. Feature → Business Impact → Application: A 25 kVA single-phase transformer with 480 V primary and 120 V secondary provides clean, reliable secondary power for PLCs, sensors, and control circuits, enabling simpler wiring and safer cascaded distribution; Application: industrial automation and packaging lines. Feature → Business Impact → Application: Tap settings of 2 at +2.5% and 4 at -2.5% enable on-site voltage regulation to compensate for feeder drop and varying loads; Application: large facilities with lengthy feeders and fluctuating demand. Feature → Business Impact → Application: Copper windings, 60 Hz operation, and a 150°C rise support efficient thermal performance and durability under peak load; Application: high-throughput manufacturing environments with frequent transients. Feature → Business Impact → Application: Electrostatic shielding, WS11 weather shield, UL Listing, and NEMA TP-1 compliance reduce regulatory risk and EMI/Environmental exposure; Application: outdoor or damp installations in distribution panels. Feature → Business Impact → Application: 25-000 warranty provides post-sale protection and lifecycle value, lowering long-term maintenance and replacement costs; Application: procurement for compliant, long-life power distribution assets.
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FAQs
What mounting orientation is recommended, and how should the primary and secondary wiring be routed to minimize loss and EMI? This transformer is designed for standard enclosure integration; ensure proper clearance, shielded connections for the copper windings, and compliant labeling. Use the frame 818 footprint and verify tap positions to match site voltage. Follow vendor installation guides to optimize heat dissipation and service access.
Yes. The unit is specified for 480 V primary and 120 V secondary, single-phase operation at 60 Hz, rated at 25 kVA. Confirm your downstream loads are within the 25 kVA rating, and plan for voltage drops along feeders. The device’s taps (+2.5% and -2.5%) support voltage regulation under varying load conditions.
The K-Factor nonlinear ventilated design mitigates losses and overheating caused by non-sinusoidal currents typical in drives and switches. Copper windings offer low resistance and stable performance, while electrostatic shielding reduces EMI. In practice, this improves PLC reliability and extends motor life in automation systems.
The transformer is UL Listed and NEMA TP-1 compliant, with a catalog note confirming TP-1 efficiency. These certifications support regulatory compliance for industrial installations and energy-efficiency programs, reducing project risk and facilitating approval processes for panel upgrades or new builds.
With a 25 kVA rating, copper windings, and robust protection features, the NT48M12S25CUEE delivers stable power with reduced losses and longer intervals between maintenance. The 1-year warranty (or 18 months from shipment) provides initial risk coverage, while UL/NEMA TP-1 compliance lowers long-term downtime risk and supports total cost of ownership improvements.