Eaton S57G11S25SS General-Purpose Transformer - UL Listed
Part Number: S57G11S25SS
Quick Summary
Eaton S57G11S25SS general-purpose encapsulated transformer delivers reliable power isolation for panel assemblies. Operators contend with downtime and harsh environments, where fragile transformers fail to meet installation standards or weather resistance. This unit is UL Listed and features a NEMA 3R indoor-outdoor enclosure with Grade 304 stainless steel construction for durability. Designed for 25 kVA loads, 60 Hz operation, and a 575 V primary to 120/240 V secondary, it supports scalable, compliant power distribution. By pairing rugged enclosure with a proven, maintenance-friendly design, it reduces lifecycle costs while ensuring critical equipment stays powered.
Product Information
Extended Description
S57G11S25SS Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 182, 60 Hz, single-phase, 575 V, 120/240 V, 2 at -5% FCBN, 115 °C rise, 25 KVA, indoor-outdoor, 2V
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S57G11S25SS
UPC
786680097607
Product Length/Depth
14.12 in
Product Height
23.31 in
Product Width
16.35 in
Product Weight
381 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
Grade 304 stainless steel enclosure
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
182
Tap size
2 at -5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
2V
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
575 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
25 kVA
Weathershield
Indoor-Outdoor
Feature: Encapsulated construction with aluminum coil and a NEMA 3R enclosure provides rugged protection against moisture, dust, and corrosion. Business Impact: Extends service life and minimizes unplanned downtime in challenging environments. Application: Ideal for indoor-outdoor panel installations, switchgear, and distribution cabinets in manufacturing and facilities. Feature: 60 Hz single-phase operation with 575 V primary and 120/240 V secondary offers compatibility with standard facility distributions. Business Impact: Reduces wiring complexity and enables quick integration with existing hardware. Application: Suitable for load centers, control rooms, and machine rooms requiring stable secondary voltages. Feature: 25 kVA rating with 115 °C rise and two taps at -5% FCBN supports voltage adjustments during startup and variations under load. Business Impact: Improves voltage regulation and startup reliability while protecting connected equipment. Application: Powering motors, controls, and sensors in light industrial setups. Feature: Grade 304 stainless steel enclosure with Weathershield for indoor-outdoor durability; UL Listed. Business Impact: Robust protection against corrosion and weather exposure, simplifying maintenance. Application: Outdoor installations or damp facilities, including coastal regions and warehouse exteriors. Feature: Compact dimensions and weight provide a stable footprint and straightforward installation. Business Impact: Eases mounting in limited spaces and reduces installation time, while UL Listed certification streamlines procurement. Application: Mounting in service rooms, equipment yards, and distribution panels.
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FAQs
For safe, compliant installation plan the 381 lb unit with its 14.12 in depth, 16.35 in width, and 23.31 in height. Ensure proper lifting gear, secure mounting, and adequate clearance for heat dissipation. The enclosure is NEMA 3R and UL Listed, so follow outdoor installation guidelines and secure weatherproof connections to prevent moisture ingress.
Key specs include a 25 kVA rating, 575 V primary input, 120/240 V secondary output, 60 Hz frequency, single-phase design, and a 115 °C rise. The transformer also features two taps at -5% FCBN, aluminum windings, and a 2V wiring connection, enabling voltage adjustments under load without compromising performance.
Yes. It uses a NEMA 3R enclosure with Grade 304 stainless steel construction for indoor-outdoor applications. UL Listed certification adds safety assurance, while the enclosure and materials provide corrosion resistance in damp or coastal environments, enabling reliable operation outside traditional indoor spaces.
The transformer is UL Listed, offering recognized safety certification. The NEMA 3R enclosure supports outdoor exposure, and the Grade 304 stainless steel construction enhances durability. These features simplify compliance during procurement and installation while supporting long-term maintenance planning.
The combination of rugged encapsulation, UL Listing, and a durable stainless-steel enclosure minimizes maintenance needs and downtime, contributing to lower total cost of ownership. Eaton’s warranty promises one year from installation or eighteen months from shipment, whichever comes first, adding financial predictability for budgeting and service planning.