Eaton Y72M28B45 General-purpose Transformer - UL Listed
Part Number: Y72M28B45
Quick Summary
Eaton Y72M28B45 is a general-purpose encapsulated transformer for 3-phase power distribution. In many plants, space, heat, and weather exposure compromise reliability; this unit addresses those by combining a compact 103 frame with rugged NEMA 3R protection. UL Listed certification and a NEMA 3R enclosure support electrical safety and outdoor/indoor use, while 60 Hz operation and a 45 kVA rating align with typical facility loads. Its aluminum coil construction and 80 °C rise enable efficient operation in demanding environments. For procurement teams, this transformer offers predictable performance, easier installation, and long service life, helping reduce downtime and total cost of ownership while fitting standard panel and bus configurations.
Product Information
Extended Description
Y72M28B45 Eaton: Eaton General-Purpose Encapsulated Transformer, 45 KVA ENCAPS XFMR 3PH 200-208Y/120 80C RISE, Three-phase, 200V, 480Y/277 V, Nema 3R, Frame: 103
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
Y72M28B45
UPC
786680100017
Product Length/Depth
10.01 in
Product Height
15.9 in
Product Width
16.93 in
Product Weight
190 lb
Certifications
UL Listed
Coil material
Aluminum
Design
EPT
Enclosure
NEMA 3R
Frame
103
Type
General purpose encapsulated transformer
Frequency rating
60 Hz
Kva Rating
45 kVA
Phase
Three-phase
Primary voltage
200 V
Secondary Voltage
208Y/120 V
Sound Level
NEMA ST-20
Temperature rise
80 °C rise
Feature: General-purpose encapsulated design provides robust protection against dust and moisture. Benefit: Improves safety and reduces maintenance requirements, leading to higher uptime in harsh environments. Application: Ideal for switchgear and control panels in manufacturing plants where reliability is critical. Feature: 45 kVA, three-phase configuration with 200 V primary and 208Y/120 V secondary. Benefit: Scales to common plant loads with stable voltage conversion, minimizing equipment mismatches and voltage fluctuations. Application: Suitable for distributing balanced power to motors, drives, and auxiliary systems in industrial facilities. Feature: NEMA 3R enclosure paired with UL Listed certification. Benefit: Enables outdoor and indoor deployment with proven electrical safety and weather resistance. Application: Outdoor substations and protected outdoor installations without enclosure refurbishment. Feature: Compact 103-frame footprint and aluminum coil construction. Benefit: Easier installation in restricted spaces and improved efficiency with lightweight, durable windings. Application: Retrofit projects and new builds where space and weight are constrained. Feature: 60 Hz operation with 80 °C rise and NEMA ST-20 sound considerations. Benefit: Meets standard industrial electrical specifications and maintains acceptable noise and thermal performance under load. Application: Commercial and industrial environments requiring reliable power without excessive heat generation.
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FAQs
The Y72M28B45 uses a compact 103-frame and a NEMA 3R enclosure, designed for straightforward installation in panel boards, switchgear, or substations. Its 190 lb weight and mounting compatibility with standard electrical rooms help reduce room requirements. Use appropriate mounting hardware and follow UL installation guidelines to ensure optimal ventilation and serviceability.
This unit provides 45 kVA, three-phase power with a 200 V primary and a 208Y/120 V secondary, operating at 60 Hz. The aluminum coil construction supports efficient current transfer, and the transformer features an 80 °C rise rating, suitable for typical industrial load profiles in controlled environments.
Yes. The transformer comes with a NEMA 3R enclosure, enabling indoor or outdoor deployment. UL Listed certification further reinforces safety and reliability in varied conditions. In outdoor installations, ensure proper clearance, ventilation, and weather protection as per OEM guidelines.
Primary certification is UL Listed, indicating compliance with electrical safety standards. The NEMA 3R enclosure rating provides weather resistance for both indoor and outdoor use. Key electrical ratings include 60 Hz operation, 45 kVA capacity, and 200 V to 208Y/120 V voltage transformation, all of which inform suitability for industrial power distribution.
Encapsulated design minimizes moisture and dust ingress, reducing maintenance needs and extending service life. Aluminum windings lower weight and improve heat dissipation, contributing to more reliable operation and potential energy efficiency gains. Together with a robust enclosure and standard frame, the Y72M28B45 supports lower total cost of ownership in mid-to-large industrial installations.