Eaton N48M28B1216CULS55 K-Factor Transformer - UL Listed
Part Number: N48M28B1216CULS55
Quick Summary
Eaton N48M28B1216CULS55 is a K-Factor nonlinear ventilated transformer for high-availability power distribution in industrial plants. Engineers often grapple with heat buildup, efficiency penalties, and regulatory compliance as systems scale. This unit is UL Listed, meets DOE 2016 Efficient standards, and aligns with 10 CFR Part 431 Efficient requirements, helping facilities reduce energy waste and stay in spec. With a NEMA 2 enclosure and copper windings, it delivers rugged indoor performance, while its WS60 Weathershield option and shielded construction support long-term reliability. Designed for 480 V to 208Y/120 V three-phase service, it enables straightforward retrofits and standardization across multiple production lines, delivering measurable cost and downtime benefits.
Product Information
Extended Description
N48M28B1216CULS55 Eaton: Eaton K-Factor nonlinear ventilated transformer, Copper windings, NEMA 2, FR943, 60 Hz, 220C, 112.5 kVA, Three-Phase, 480 to 208Y/120, 80C rise, Shielded, DOE 2016, WS60, 283B, K13, 55 dB
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28B1216CULS55
UPC
786680244865
Product Length/Depth
31.5 in
Product Height
51 in
Product Width
34.5 in
Product Weight
1355 lb
Compliances
DOE2016 Efficient
Certifications
UL Listed
Catalog Notes
10 CFR Part 431 (2016) Efficient
Coil material
Copper
Enclosure
NEMA 2
Wiring connection
283B
Type
Energy-efficient ventilated transformer
Frame
943
Insulation
220 °C
Material
Copper windings
Mounting
Floor or wall, upright only
Tap size
2 at +2.5%, 4at -2.5%
Frequency rating
60 Hz
Kva Rating
112.50 kVA
Volt ampere rating
112.50 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Sound Level
55 dB
Temperature rise
80 °C rise
Voltage rating
480 Vac-208Y/120 Vac
Efficiency
10 CFR Part 431-2016 (DOE 2016)
Modification 1
Electrostatic shield
Special features
K-factor 13
Weathershield
WS60
Feature → Business Impact → Application: K-Factor 13 nonlinear design helps mitigate harmonics, reducing transformer overheating and extending life in load-rich environments; improves power quality for drives and controllers, lowering maintenance and downtime in manufacturing lines. Feature → Application: 112.5 kVA three-phase rating with 480 V primary and 208Y/120 V secondary supports scalable distribution from main feeders to control panels in large facilities, enabling design standardization. Feature → Copper windings and 220 °C insulation increase efficiency and durability, delivering lower copper loss and longer service life in continuous operation applications such as packaging and robotics. Feature → NEMA 2 enclosure and floor or wall mounting provide rugged indoor installation options with straightforward retrofit in existing switchgear rooms, reducing integration time. Feature → Tap size of 2 at +2.5% and 4 at -2.5% offers precise voltage regulation (+/- 4%), ensuring sensitive equipment remains within tolerance in variable supply conditions. Feature → DOE 2016 Efficient and UL Listed certifications deliver regulatory alignment and energy savings, supporting compliance-driven procurement and lifecycle cost reduction. Feature → Shielded construction with electrostatic shield minimizes EMI between windings, improving reliability for nearby instrumentation and control systems. Feature → WS60 Weathershield option adds outdoor protection for sheltered spaces, expanding installation flexibility in semi-exposed environments. Feature → Sound level of 55 dB and 80 °C rise optimize workspace acoustics and thermal performance in busy plants.
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FAQs
Plan for floor or wall mounting with upright orientation; account for a footprint of roughly 31.5 in (L) x 34.5 in (W) x 51 in (H) and a weight around 1355 lb. Ensure 283B wiring compatibility and adequate clearance for heat dissipation, service access, and the 55 dB noise level. Provide proper seismic and anchoring where required and confirm NEMA 2 indoor suitability in the electrical room.
It is a 112.5 kVA three-phase transformer with 480 V primary and 208Y/120 V secondary, rated for 60 Hz. Tap capability is 2 at +2.5% and 4 at -2.5%, offering roughly +/-4% voltage regulation. Features include copper windings, 80 °C rise, and a shielded design with a 55 dB sound profile, frame 943, and insulation to 220 °C.
Ideal for industrial power distribution, control cabinets, and production lines requiring reliable voltage transformation from 480 V to 208Y/120 V. The NEMA 2 enclosure supports indoor installations, while WS60 provides optional weather shielding for semi-exposed spaces. The K-Factor 13 design helps mitigate harmonics in drives-heavy environments, improving overall system reliability.
The transformer is UL Listed and aligned with DOE 2016 Efficient standards, including 10 CFR Part 431 Efficient requirements. These certifications help ensure energy compliance, safer operation, and smoother procurement processes for regulated facilities.
Copper windings and robust insulation support long service life with lower losses, contributing to energy savings under DOE 2016. Shielded windings reduce EMI, improving reliability of nearby controls. While maintenance needs are minimal, plan for periodic inspections of enclosure integrity, tap changer operation, and connection integrity to sustain performance and maximize return on investment.