Eaton S20L11S25CUSSLS47 Encapsulated Transformer - UL Listed
Part Number: S20L11S25CUSSLS47
Quick Summary
The Eaton S20L11S25CUSSLS47 encapsulated transformer provides reliable power isolation and voltage conversion for industrial controls. In rugged plant environments, downtime due to transformer failures disrupts production and raises costs. UL Listed certification and a NEMA 3R enclosure ensure safety and weather resistance, while low-sound operation supports occupied spaces. Its 25 kVA rating aligns with common machine panels, and the dual primary voltages of 240/480 V simplify system design. Voltage taps at -5% and -2.5% FCBN enable precise regulation to accommodate supply fluctuations. Proven copper windings deliver high efficiency and thermal performance for continuous duty operation, helping boost uptime and overall plant productivity.
Product Information
Extended Description
S20L11S25CUSSLS47 Eaton: General-Purpose Encapsulated Transformer, EP, 1PH, PV: 240 X 480V, Taps: 2 at -5% FCBN X 4 at -2.5% FCBN, SV: 120/240V, 115°C, 25 kVA, Cu windings, Frame: 182, Indoor-Outdoor
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20L11S25CUSSLS47
UPC
786680075469
Product Length/Depth
14.12 in
Product Height
23.31 in
Product Width
16.35 in
Product Weight
387 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, Low sound equal to 47 dB
Coil material
Copper
Design
EP
Enclosure
NEMA 3R
Frame
182
Tap size
2 at -5% FCBN x 4 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
23A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
25 kVA
Modification 1
Low sound 47 dB
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S20L11S25CUSSLS47
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: 25 kVA single‑phase design with copper windings reduces copper loss and improves panel heat management, delivering higher efficiency and lower operating temperatures in critical control circuits within manufacturing lines. This supports extended component life and fewer lockups under load. Feature → Business Impact → Application: Standard 240/480 V primary and 120/240 V secondary outputs enable straightforward integration with common industrial power architectures, simplifying panel design for machine controls and automation zones. Feature → Business Impact → Application: 47 dB low‑sound performance and Weathershield indoor-outdoor capability reduce noise-related compliance concerns and expand installation options in semi‑enclosed spaces or outdoor equipment housings. Feature → Business Impact → Application: NEMA 3R enclosure and frame 182 provide rugged mounting and predictable service access, accelerating installation in new builds or retrofit projects. Feature → Business Impact → Application: Tap settings of -5% and -2.5% FCBN offer voltage regulation to counter fluctuations, protecting sensitive devices and improving uptime in variable power environments. Feature → Business Impact → Application: UL Listed certification reinforces safety compliance for procurement and installation in regulated industrial settings, while the compact footprint supports space-constrained control cabinets.
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FAQs
Install per manufacturer guidelines using the 182 frame size. The unit’s NEMA 3R enclosure provides indoor-outdoor protection, and wire the primary to 240/480 V while delivering 120/240 V on the secondary. Set the taps at -5% and -2.5% FCBN to match supply voltage, ensuring safe, stable operation of control circuits.
The S20L11S25CUSSLS47 delivers 25 kVA at 60 Hz with copper windings, offering high efficiency and reliable voltage transformation. Expect lower copper losses and predictable thermal performance under typical automation loads, contributing to longer component life and reduced cooling requirements in control panels.
Yes. The unit features a rugged NEMA 3R enclosure designed for indoor-outdoor use and an indoor-outdoor weather-resilient build, making it suitable for semi-exposed or outdoor locations while maintaining safety and performance for critical loads.
The transformer carries UL Listed certification, signifying safety compliance for industrial electrical equipment. Its encapsulated design and copper windings align with established safety practices for power distribution components in demanding environments.
With robust copper windings, a durable enclosure, and stable voltage conversion, downtime is minimized and maintenance cycles are extended. The 25 kVA rating supports scalable automation, improving uptime and reducing energy waste, which translates to a favorable return on investment over the asset’s life.