Eaton N48M47B33CU Transformer - K-13, 300 kVA, UL Listed
Part Number: N48M47B33CU
Quick Summary
Eaton K-Factor nonlinear ventilated transformer is designed to support critical power systems in industrial facilities and data centers. In demanding electrical environments, voltage fluctuations and unexpected load surges can trigger downtime and costly outages. UL Listed safety certification is documented, and the design leverages copper windings with an electrostatic shield to improve fault isolation and efficiency. Its 80°C rise rating and robust frame construction make it well suited for high-load installations, while the +2.5%/ -2.5% tapping options support precise voltage regulation. Used in power distribution for critical facilities, this transformer delivers reliability, compliance, and long-term cost savings, with straightforward installation and compatibility with WS35 weather protection.
Product Information
Extended Description
N48M47B33CU Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 480Y/277V, 80°C, 300 kVA , Cu windings, Elec. Shield, Frame: 920, uses WS35
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M47B33CU
UPC
786680015182
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
4500 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
Coil material
Copper
Type
Ventilated transformer
Design
K-13
Frame
920
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
300 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
480Y/277 V
Temperature rise
80 °C rise
Special features
Electrostatically Shielded
Weathershield
WS35
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M47B33CU
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The K-Factor nonlinear ventilation reduces heat buildup under nonlinear loads, improving reliability and extending asset life; ideal for data centers and high-duty manufacturing lines. Application: support mission-critical loads with stable voltage and reduced maintenance costs. Feature → Business Impact → Application: Three-phase 300 kVA rating provides scalable capacity for motor drives and PLC-based systems, enabling efficient distribution in process lines. Application: motor control centers and distribution panels in industrial plants. Feature → Business Impact → Application: 480 V primary to 480Y/277 V secondary design offers flexible integration with common electrical infrastructures; improves compatibility across equipment fleets. Application: retrofits and new builds in mixed-voltage environments. Feature → Business Impact → Application: Tap changes of +2.5% FCAN and -2.5% FCBN enable precise voltage regulation under load, reducing harmonics and mitigating nuisance tripping. Application: critical power paths with variable loads. Feature → Business Impact → Application: Copper windings and electrostatic shield enhance efficiency and fault isolation, supporting lower losses and safer maintenance. Application: high-demand substations and data centers. Feature → Business Impact → Application: Weathershield WS35 and frame 920 construction deliver outdoor capability and durability, reducing enclosure costs. Application: outdoor substations and industrial outdoor installations.
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FAQs
Plan for a floor or mezzanine installation capable of supporting a 4500 lb unit and 36.23 in depth. Ensure proper ventilation for the ventilated design, confirm WS35 weather protection suitability if outdoor exposure is possible, and verify 480 V primary and 480Y/277 V secondary wiring alignment with site fault protection and panel schedules.
The K-Factor nonlinear design targets harmonic mitigation and reduced overheating under nonlinear loading. Copper windings and the electrostatic shield help maintain impedance stability, improving fault isolation and reliability for systems with variable harmonics, such as drives and rectifier loads.
Yes. The WS35 weather shield option enhances outdoor durability, while the ventilated 920 frame supports outdoor mounting in protected environments. Verify installation clearances, enclosure protection rating requirements, and local codes before outdoor deployment.
The N48M47B33CU is UL Listed, confirming compliance with recognized safety standards. While UL is documented, verify any regional CE, IP, or industry-specific certifications as required for your installation site and regulatory framework.
With copper windings, shielded construction, and a robust 80°C rise design, the unit offers improved efficiency and reduced cooling loads, lowering energy and maintenance costs over time. The durable frame and weather protection options minimize downtime, supporting longer intervals between servicing and faster return on investment.