Eaton N48M28T75EESR Nonlinear Transformer - UL Listed
Part Number: N48M28T75EESR
Quick Summary
Eaton N48M28T75EESR nonlinear transformer delivers robust voltage conditioning for 480V three-phase power systems in industrial automation. Many engineers struggle with heat buildup, voltage regulation under load transients, and space constraints in control panels. This unit carries UL Listed certification and is designed around a 150 °C rise with a 200 °C insulation system, plus NEMA TP-1 efficiency and NEMA ST-20 sound level testing, to support compliance and predictable performance. With KT-13 K-Factor nonlinear operation, dual taps (+2.5% and -2.5%), and a compact footprint, it helps reduce maintenance, improve uptime, and simplify installation for panel builders, integrators, and OEMs.
Product Information
Extended Description
N48M28T75EESR Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (3-phase), PV 480V, Taps: 2 at +2.5% /4 at -2.5%, SV 208Y/120V, 150°C rise w/ 200°C insulation systeam, 75 kVA, EE, SR
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28T75EESR
UPC
786680103216
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
717 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
Catalog Notes
Certified Test Report of NEMA ST-20 Sound Level (on CMI style), NEMA TP-1 efficient
Coil material
Aluminum
Enclosure
NEMA 2
Wiring connection
283B
Type
Nonlinear, ventilated transformer
Frame
916A
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
75 kVA
Phase
Three-phase
Primary voltage
480 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 - N48M28T75EESR
KT-13 K-Factor nonlinear design enables harmonic mitigation in systems with significant harmonic currents, reducing material stress and improving life expectancy of connected equipment, which translates to lower maintenance costs and fewer unplanned outages. This leads to improved uptime in critical manufacturing lines and data-intensive automation environments where power quality directly affects process control. The transformer’s 75 kVA rating in a three-phase configuration supports scalable distribution for growing facilities, while a 480 V primary and 208Y/120 V secondary provide flexible interfacing with modern motor drives and PLC-powered loads. By offering taps at +2.5% and -2.5%, voltage regulation remains stable during transients, minimizing nuisance tripping and ensuring equipment sensitivity remains within spec. The NEMA 2 enclosure, electrostatically shielded construction, and aluminum coils streamline installation in standard electrical rooms, reducing installation time and improving serviceability. UL Listed, NEMA TP-1 efficiency, and NEMA ST-20 sound testing reassure compliance for end users and inspectors, supporting smoother approvals and lower risk in regulated environments. The unit’s weight and footprint balance enable retrofit and OEM integration without major rework, while the WS19 weather shield option supports outdoor or semi-exposed installations in appropriate climates.
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FAQs
The N48M28T75EESR is a three-phase transformer rated at 75 kVA with a 480 V primary and 208Y/120 V secondary. It operates at 60 Hz and features KT-13 K-Factor nonlinear design for harmonic mitigation. The device also provides taps at +2.5% and -2.5% to optimize voltage regulation under load transients and a 150°C rise with a 200°C insulation system.
Yes, the unit is UL Listed. It is built in a NEMA 2 enclosure for indoor, dry environments, designed with aluminum coil construction and electrostatic shielding. This combination enhances safety, simplifies compliance testing, and eases installation within standard industrial control rooms or equipment cabinets.
This 75 kVA nonlinear transformer is well-suited for industrial automation panels, motor drives, and process control systems that require reliable power conditioning. Its 480 V primary and 208Y/120 V secondary support common facility electrical architectures, while the KT-13 design helps manage harmonics in environments with significant non-linear loads such as drives and power electronics.
The transformer provides taps at +2.5% and -2.5% to fine-tune output voltage under varying loads. Wiring is configured for 283B connections, and the enclosure is NEMA 2 for standard indoor installation. With a frame of 916A and a weight of 717 lb, ensure adequate mounting clearance and lifting provisions. Consider the WS19 weather shield if exposed to damp or dusty conditions.
Eaton offers a one-year warranty from installation or eighteen months from shipment, whichever occurs first, under policy 25-000. Support includes access to Eaton’s specification sheets, test reports (including NEMA ST-20 sound level and TP-1 efficiency data), and application guidance to help with installation planning, compliance checks, and long-term maintenance scheduling.