Eaton N48M28B15CUNV Enclosed Transformer - UL Listed
Part Number: N48M28B15CUNV
Quick Summary
Eaton N48M28B15CUNV is a three-phase, totally enclosed non-ventilated transformer designed for reliable power distribution in demanding industrial environments. Maintenance costs and cooling challenges in hot facilities can threaten uptime, but this unit minimizes those risks with a compact, shielded enclosure and robust copper windings. It carries UL Listed safety certification and features a K-13 non-linear design with electrostatic shielding to help manage harmonic currents and EMI. Designed for flexibility, it delivers a 15 kVA rating with voltage taps, supporting stable operation for control panels and equipment rooms. This combination translates to improved reliability, reduced maintenance, and consistent performance across changing load conditions.
Product Information
Extended Description
N48M28B15CUNV Eaton: Eaton K-Factor Non Linear Transformer, Non-Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 80°C, 15 kVA, Cu windings, Elec. Shield, Frame: 915DN
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
N48M28B15CUNV
UPC
786680067884
Product Length/Depth
22 in
Product Height
39.18 in
Product Width
29 in
Product Weight
556 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
Totally enclosed non-ventilated
Coil material
Copper
Design
K-13
Frame
915DN
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Non-ventilated transformer
Frequency rating
60 Hz
Kva Rating
15 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
80 °C rise
Special features
Electrostatically Shielded
The N48M28B15CUNV is a 15 kVA, 60 Hz, three-phase transformer with a 480 V primary and 208Y/120 V secondary, built with copper windings and electrostatic shielding. Feature → Business Impact → Application: Copper windings reduce I2R losses for improved efficiency and longer service life, lowering energy costs in motor drives and process controls; this means less heat generation and better performance in high-load scenarios. The K-13 non-linear design helps mitigate harmonic distortion in power networks, supporting compliance with power quality standards and reducing nuisance tripping in sensitive equipment. The enclosure is totally enclosed and non-ventilated, enabling installation in dusty or constrained spaces while maintaining safe operation and EMI control for sensitive control panels. The 915DN frame, with dimensions and a weight of 556 lb, provides a rugged footprint suitable for industrial racks and dedicated transformer pads, simplifying installation and future upgrades. Voltage taps (+2.5% FCAN, -2.5% FCBN) offer on-site voltage adjustment to accommodate supply variations across manufacturing lines, enhancing stability without additional equipment. A UL Listed certification backs safety and reliability, easing procurement audits and maintenance planning. The unit’s compact footprint for its rating supports scalable distribution in multi-bay switchgear environments, delivering consistent performance without compromising space. In practice, this transformer pairs well with control systems, machine builds, and panel boards that require robust, maintainable power conversion with predictable thermal behavior.
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FAQs
This transformer features a frame 915DN footprint with dimensions roughly 22 in deep, 39.18 in high, and 29 in wide, weighing about 556 lb. Plan for a solid, vibration-free pad or rack mounting, ensure access for taps and maintenance, and provide adequate clearance for cooling and electrical connections. The non-ventilated enclosure requires a ventilated space to avoid overheating in extreme conditions, and proximity to control panels minimizes wiring runs and EMI exposure.
The N48M28B15CUNV provides a 480 V primary and 208Y/120 V secondary in a three-phase configuration. This arrangement is ideal for stepping down medium-voltage facility power to standard control voltages for motors, drives, and panel boards, enabling safe and reliable operation of automation cabinets and distribution equipment on the shop floor.
Yes. The transformer employs a K-13 non-linear design with electrostatic shielding, which helps manage harmonic currents and suppress EMI. This makes it a better fit for facilities with variable loads, harmonic-producing equipment, and sensitive control electronics that require clean power without excessive voltage distortion.
The unit is UL Listed, indicating compliance with recognized safety standards for electrical equipment. It carries Eaton’s standard warranty policy of one year from installation or eighteen months from shipment, whichever occurs first, providing a clear basis for maintenance planning and asset ROI tracking.
Tap settings of 2 at +2.5% and 4 at -2.5% allow on-site voltage adjustments to compensate for supply variations and wiring losses. This capability helps maintain consistent secondary voltage to downstream equipment, reducing the risk of under- or over-voltage conditions and improving overall process stability.