Eaton S20N11S25SS4X Transformer - NEMA 4X UL Listed
Part Number: S20N11S25SS4X
Quick Summary
The Eaton S20N11S25SS4X encapsulated transformer is a general-purpose unit delivering 25 kVA of power isolation for industrial control panels and equipment. It helps mitigate field maintenance challenges by combining rugged protection with a corrosion-resistant enclosure, reducing downtime and service interruptions. UL Listed, CSA Certified, and featuring a NEMA 4X steel enclosure, this transformer is designed for reliability in demanding environments. Its indoor-outdoor compatibility and robust construction support scalable power distribution, making it a dependable choice for plants upgrading panels or retrofitting legacy systems. With a 60 Hz single-phase design and aluminum windings, it delivers consistent performance while simplifying installation and long-term energy management.
Product Information
Extended Description
S20N11S25SS4X Eaton: General-purpose encapsulated transformer EP Single-phase 240 x 480V None 120/240V 150°C 25 kVA Aluminum windings 1824X 3A Indoor-Outdoor 60 Hz 304SS NEMA 4X Enclosure
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11S25SS4X
UPC
786680116025
Product Length/Depth
15.1 in
Product Height
19.85 in
Product Width
19.87 in
Product Weight
342 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
Not Applicable
Certifications
Contact Manufacturer UL Listed CSA Certified
Catalog Notes
NEMA 4X Grade 304 stainless steel enclosure.
Coil material
Aluminum
Design
EP
Enclosure
NEMA 4X
Frame
1824X
Tap size
None
Type
General-purpose encapsulated transformer
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Volt ampere rating
25 kVA
Weathershield
Indoor-Outdoor
Feature: General-purpose encapsulated EP design with aluminum windings provides durable, vibration-tolerant operation and easier handling during installation. Business Impact: reduces field failures and maintenance cost, extends service intervals, and lowers total cost of ownership. Application: ideal for compact control panels and space-constrained installations in factory floors where reliability matters. Feature: 25 kVA rating with 240/480 V primary and 120/240 V secondary supports critical loads and distributed power without overloading feeders. Business Impact: improves load balancing and surge tolerance, enabling predictable performance in automation systems. Application: suitable for machine control, PLC power feeds, and panel distribution in manufacturing lines. Feature: NEMA 4X stainless enclosure rated for indoor-outdoor use with 304SS construction and 150 °C rise. Business Impact: enhances corrosion resistance and safety in harsh environments, reducing maintenance downtime. Application: installs in wet or dusty plants, outdoor equipment yards, and process lines. Feature: UL Listed and CSA Certified with 60 Hz single-phase operation. Business Impact: ensures regulatory compliance and quick integration with existing safety programs. Application: supports formal audits and reliability programs across facilities. Feature: Weight and footprint (1824X frame, 342 lb) inform installation planning and mechanical integration. Business Impact: enables precise crane or slat-rail mounting planning and minimizes rework. Application: pre-fabricated plant rooms and retrofit projects where space and handling constraints exist.
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FAQs
The S20N11S25SS4X uses the 1824X frame and weighs 342 lb, with dimensions around 19.87 in W x 19.85 in H x 15.1 in D. Its NEMA 4X stainless enclosure enables indoor-outdoor use, and it supports 240/480 V primary and 120/240 V secondary. Plan for appropriate lifting, access clearance, and panel cutouts, ensuring adequate ventilation and clearance for maintenance.
This transformer delivers a 25 kVA rating with a 240/480 V primary and 120/240 V secondary configuration, operating at 60 Hz in a single-phase arrangement. Aluminum windings provide good thermal performance, and the unit supports typical distribution loads found in automation and control panels.
Yes. The enclosure is NEMA 4X rated with 304 stainless steel construction, designed for indoor-outdoor use. It is built to withstand moisture, dust, and temperature variations, reducing corrosion risk and maintenance needs in harsh environments while conforming to UL Listed and CSA Certified standards.
The S20N11S25SS4X is UL Listed and CSA Certified, ensuring compliance with recognized safety and performance standards. These certifications support regulatory audits and industry specifications, particularly for installations in regulated facilities and utility feeder applications.
Warranty coverage follows Eaton’s policy of one year from installation or eighteen months from shipment, whichever occurs first. Routine maintenance emphasizes enclosure sealing, inspection of connections, and periodic thermal checks. The robust NEMA 4X enclosure and aluminum windings contribute to reduced maintenance frequency and predictable long-term performance with favorable total cost of ownership.