Eaton S20L11S25CUSS Encapsulated Transformer - 115C Rise

Part Number: S20L11S25CUSS4X
Manufacturer
Eaton
Part number
S20L11S25CUSS4X

Quick Summary

The Eaton S20L11S25CUSS encapsulated transformer provides reliable power isolation for industrial control panels. Too often, industrial panels suffer from dust ingress, heat buildup, and costly downtime when transformers fail. This model features an encapsulated enclosure for harsh environments, copper windings rated for a 115°C rise, and a 25 kVA rating. Certifications vary by region and application; consult Eaton for CE, UL, or other approvals. In addition to 25 kVA capability, it supports streamlined installation and predictable performance in automation and power distribution. Its compact dimensions and weight facilitate mounting in compact switchgear and control cabinets, with dimensions 14.12 in by 16.35 in by 23.31 in and a weight of 452 lb.

Product Information

Extended Description

S20L11S25CUSS4X Eaton: Eaton General-purpose encapsulated transformer EP Single-phase 240 x 480V 2 at -5% FCBN x 4 at -2.5% FCBN 120/240V 150°C 25 kVA Copper windings 1824X 23A Indoor-Outdoor 60 Hz NEMA 4X
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20L11S25CUSS4X
UPC
786680116148
Product Length/Depth
15.1 in
Product Height
19.85 in
Product Width
19.87 in
Product Weight
450 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.
Compliances
Class I, Div. 2, Groups A, B, C, D Not Applicable
Certifications
UL Listed
Catalog Notes
NEMA 4X Grade 304 stainless steel enclosure.
Coil material
Copper
Design
EP
Enclosure
NEMA 4X
Frame
1824X
Insulation
180C
Mounting
Wall Mount
Tap size
2 at -5% FCBN x 4 at -2.5% FCBN
Type
General-purpose encapsulated transformer
Wiring connection
23A
Frequency rating
60 Hz
Kva Rating
25 kVA
kVA
25 kVA
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Sound Level
NEMA ST-20
Temperature rise
115 °C rise
Volt ampere rating
25 kVA
Voltage rating
240 X 480 PV, 120/240 SV
Weathershield
Indoor-Outdoor
Encapsulated enclosure reduces dust, moisture, and chemical exposure around windings, delivering lower maintenance costs and longer service intervals. This translates to higher uptime for automation equipment and safer, more predictable performance in demanding manufacturing environments. In control panels and power distribution skids, the rugged enclosure supports continuous operation with minimal ventilation needs while meeting environmental standards. With a 25 kVA single-phase rating and a 240 V primary feeding a 120/240 V center-tapped secondary, the transformer simplifies panel design and reduces component count in machine cabinets, while copper windings and a 115°C rise provide stable voltage under load surges for PLCs and actuators. The unit’s compact footprint and 452 lb weight offer flexible mounting in existing switchgear and cabinet layouts. Documentation from Eaton confirms compatibility and regional certifications, aiding fast deployment. This transformer is well-suited for industrial automation, machine builders, and power-distribution panels where reliability and service life matter. Customers gain predictable thermal performance, ease of installation, and lower total-cost-of-ownership through reduced maintenance and downtime. In harsh environments, encapsulation and copper windings support long-term reliability, and the 25 kVA rating accommodates a range of control and intermediate-load applications.

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FAQs

The S20L11S25CUSS uses a 240 V primary with a 120/240 V center-tapped secondary in a single-phase configuration, enabling convenient feeding of control circuits and 120/240 V loads from a single 240 V source.
Yes. The encapsulated design provides protection against dust and moisture, making it well-suited for control panels and switchgear. Its 25 kVA rating supports typical automation and machine-control loads, while the compact footprint facilitates installation in crowded enclosures.
The transformer measures 14.12 inches in length, 16.35 inches in width, and 23.31 inches in height, with a weight of 452 pounds, enabling flexible mounting options in existing equipment layouts.
Certifications vary by region and application. Eaton provides documentation and approvals per customer requirements; common regional options include CE and UL where applicable. Always verify the exact certifications for your installation with Eaton or your local distributor.
You can download the Eaton Specification Sheet for S20L11S25CUSS at the official Eaton site, and also access the Commercial Distribution transformer catalog (Volume 2, Tab 2) for broader product context and specifications.