Eaton S20L11S25SS4X Encapsulated Transformer - NEMA 4X
Part Number: S20L11S25SS4X
Quick Summary
S20L11S25SS4X encapsulated transformer delivers reliable power isolation for control panels. In harsh industrial environments, moisture, dust, and temperature fluctuations can compromise reliability and uptime. This unit features an indoor-outdoor NEMA 4X enclosure and 304 stainless steel construction, providing durable protection against corrosion, weather, and debris. Notable specifications like a 25 kVA rating, 60 Hz single-phase operation, and selectable voltage taps enable precise, consistent performance across a wide range of applications, while the enclosure design supports safe, easy service. For formal certifications such as UL/CE, consult Eaton; the product is designed to integrate with standard power-distribution and automation architectures, delivering business value through improved reliability and reduced maintenance.
Product Information
Extended Description
S20L11S25SS4X Eaton: General-purpose encapsulated transformer EP 1PH 240 x 480V 2 at -5% FCBN x 4 at -2.5% FCBN 120/240V 115°C 25 kVA Aluminum windings 1824X 23A Indoor-Outdoor 60 Hz NEMA 4X
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20L11S25SS4X
UPC
786680116032
Product Length/Depth
14.12 in
Product Height
23.31 in
Product Width
16.35 in
Product Weight
453 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
Contact Manufacturer
Catalog Notes
NEMA 4X Grade 304 stainless steel enclosure.
Coil material
Aluminum
Design
EP
Enclosure
NEMA 4X
Frame
1824X
Tap size
2 at -5% FCBN x 4 at -2.5% FCBN
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
115 °C rise
Volt ampere rating
25 kVA
Weathershield
Indoor-Outdoor
Encapsulated design enhances durability and reliability in harsh environments, reducing insulation degradation from moisture or dust; Application: control panels in industrial automation. The 25 kVA rating supports heavy control loads with reduced ducting and cabling, streamlining installation and lowering total cost of ownership; Business impact: improved uptime and space efficiency. Primary voltage options of 240 V and 480 V with a 120/240 V secondary enable flexible deployment across machines and lines; Application: medium-duty power distribution in manufacturing. Tap settings of 2 at -5% FCBN and 4 at -2.5% FCBN provide precise voltage regulation to compensate for supply variations; Business impact: tighter voltage control reduces equipment stress and prolongs component life; Application: panel voltage management. NEMA 4X enclosure coupled with a 304 stainless steel construction offers corrosion resistance and weatherproofing; Application: outdoor or harsh indoor environments with reduced maintenance. Aluminum windings and the 1824X frame support efficient heat dissipation and mechanical compatibility with common mounting footprints; Business impact: reliable performance in continuous-duty operation. The transformer weighs 453 lb, reflecting a robust, service-friendly design that supports scalable installations and easier servicing; Application: modular power distribution in automated facilities. Warranty terms of one year from installation or 18 months from shipment provide protection against manufacturing defects; Business impact: lowers lifecycle risk and supports service planning.
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FAQs
Plan for a stable, level mounting surface compatible with the 1824X frame and a service clearance for a 453 lb unit. Ensure proper enclosure access for maintenance, and confirm ambient conditions stay within design limits for 60 Hz operation. Use shielded connections to the primary and secondary circuits and verify tap settings align with the expected supply variation to minimize voltage drift.
The unit provides a 25 kVA VA rating with a 240 V or 480 V primary and a 120/240 V secondary. It operates at 60 Hz in a single-phase configuration. Voltage taps include 2 at -5% FCBN and 4 at -2.5% FCBN to compensate for nominal supply deviations and maintain stable secondary voltage under load.
Yes. It features an indoor-outdoor NEMA 4X enclosure and a stainless steel enclosure design, intended to resist moisture, dust, and corrosive exposure. The rugged construction supports reliable operation in industrial automation environments and reduces field maintenance in exposure-prone locations.
The product notes indicate a NEMA 4X protection level and 304 stainless steel enclosure. For formal certifications such as UL or CE, Eaton provides confirmation upon request, and detailed specifications are available in Eaton datasheets and catalog references.
By delivering reliable isolation and robust enclosure protection, the transformer reduces unplanned downtime and maintenance cost associated with moisture or dirt ingress. Its high-efficiency aluminum windings and voltage-tap options minimize energy waste and voltage-related wear, contributing to lower operating costs over the equipment lifecycle.