Eaton Y57M28T30 General-Purpose Transformer - UL Listed
Part Number: Y57M28T30
Quick Summary
Eaton General-Purpose encapsulated transformer provides reliable power isolation for industrial controls and distribution in harsh environments. For maintenance teams, downtime and moisture ingress are a constant risk; this encapsulated design helps minimize those outages. UL Listed certification and a NEMA 3R enclosure enable safe indoor-outdoor service in demanding facilities, while the rugged aluminum windings and 60 Hz, three-phase construction support continuous operation. With a 30 kVA rating and a primary 575 V feeding a 208Y/120 V secondary, it scales to mid-size distribution needs and simplifies panel integration. The design also emphasizes easy installation with 2 at +2.5% FCAN and 4 at -2.5% FCBN taps and standard wiring (84AG), driving reduced install time and lifecycle costs.
Product Information
Extended Description
Y57M28T30 Eaton: Eaton General purpose encapsulated transformer, EPT, aluminum, NEMA 3R, 243, 60 Hz, three-phase, 575 V, 208Y/120 V, 2 at +2.5% FCAN, 4 at -2.5% FCBN, 115 °C rise, 30 KVA, indoor-outdoor, 84AG
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
Y57M28T30
UPC
786680076510
Product Length/Depth
10.52 in
Product Height
17.38 in
Product Width
20 in
Product Weight
0.001 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
Aluminum
Design
EPT
Enclosure
NEMA 3R
Frame
243
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
84AG
Frequency rating
60 Hz
Phase
Three-phase
Primary voltage
575 V
Secondary Voltage
208Y/120 V
Temperature rise
115 °C rise
Volt ampere rating
30 kVA
Weathershield
Indoor-Outdoor
Encapsulated construction provides robust protection against dust and moisture, reducing field failures and maintenance costs. This translates to fewer outages and longer service life for critical control circuits in harsh environments, such as factory floors and outdoor equipment enclosures. In practice, the transformer supports reliable power delivery to multiple loads from a single source, improving line-side load availability and easing panel design. Aluminum coil material reduces weight and improves heat dissipation, simplifying installation and lowering shipping costs while offering superior corrosion resistance in damp spaces. Maintenance teams benefit from fewer rewinds and longer intervals between service interventions. A NEMA 3R enclosure delivers weather resistance for indoor-outdoor operation, enabling safer outdoor siting and reducing the need for separate protective housings in mixed environments. This enclosure rating streamlines compliance planning for facility managers and panel builders. The 60 Hz three-phase configuration with 30 kVA capacity fits mid-size distribution needs, delivering stable voltage to control panels and auxiliary systems while supporting scalable machine provisioning. Tap settings at +2.5% FCAN and -2.5% FCBN provide essential voltage regulation to accommodate modest supply swings without tripping circuits. Standard wiring 84AG ensures familiar, widely supported connections, reducing field labor and risk during installation. UL Listed certification reinforces reliability and procurement confidence, while the combination of compact size and rugged construction translates to lower total cost of ownership and easier lifecycle management for industrial facilities.
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FAQs
The Y57M28T30 should be installed with a 575 V primary feeding a 208Y/120 V secondary in a suitable indoor or outdoor location. Use the 84AG wiring and observe the taps: 2 at +2.5% FCAN and 4 at -2.5% FCBN to accommodate modest voltage variations. Ensure the unit is mounted within the NEMA 3R enclosure and that proper clearance for heat dissipation is maintained to optimize performance and service life.
Yes. The transformer features a NEMA 3R enclosure and UL Listed certification, enabling safe operation in outdoor or mixed indoor-outdoor environments. When pairing with outdoor panels, verify system clearance, weather protection for terminations, and adherence to local codes. The enclosure and build quality support reliable performance in exposed installations while simplifying compliance documentation.
Key specs include a 30 kVA rating, 575 V primary, 208Y/120 V secondary, and 60 Hz three-phase operation. Temperature rise is rated at 115 °C. Voltage taps are 2 at +2.5% FCAN and 4 at -2.5% FCBN, allowing minor adjustments to accommodate supply variability. Coils are aluminum, and wiring uses 84AG connectors, supporting robust, field-friendly installation.
Encapsulation protects windings from moisture, dust, and environmental contaminants, reducing insulation degradation and field failures. The result is fewer unscheduled outages and lower maintenance labor. For mid-size facilities, this translates to longer intervals between service events, lower repair costs, and improved overall equipment availability in both plant floors and harsh outdoor locations.
The transformer carries UL Listed certification and a NEMA 3R enclosure rating, enabling safe operation in indoor-outdoor environments. The combination supports compliance with common electrical codes and panel-builder requirements. Warranties are available under Eaton’s policy, typically covering one year from installation or eighteen months from shipment, whichever occurs first, adding a further layer of risk mitigation.