Eaton S20L11B25CUSS General-Purpose Transformer - UL Listed
Part Number: S20L11B25CUSS
Quick Summary
Eaton General purpose encapsulated transformer powers reliable power conversion for industrial control panels and distribution blocks. This unit addresses common uptime challenges by combining rugged construction with precise voltage regulation to support sensitive loads in dynamic environments. With a UL Listed certification, a NEMA 3R indoor-outdoor enclosure, and a Grade 304 stainless steel cabinet, it is built for both harsh outdoor applications and clean indoor installations. The design enables seamless integration in electrical rooms and outdoor substations while preserving footprint and efficiency. For engineers and procurement teams, the value is clear: proven reliability, flexible primary/secondary voltages, and a long-term total-cost-of-ownership advantage for industrial power distribution and control systems.
Product Information
Extended Description
S20L11B25CUSS Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 300A, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, 2 at -5% FCBN X 4 at -2.5% FCBN, 80 °C rise, 25 KVA, indoor-outdoor, 248A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20L11B25CUSS
UPC
786680097591
Product Length/Depth
14.06 in
Product Height
28.24 in
Product Width
22.42 in
Product Weight
662 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
Copper
Design
EP
Enclosure
NEMA 3R
Frame
300A
Tap size
2 at -5% FCBN x 4 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
248A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
80 °C rise
Volt ampere rating
25 kVA
Weathershield
Indoor-Outdoor
Feature → Copper coil and EP design provide efficient energy transfer with reduced copper losses, translating to lower operating temperatures and improved reliability for general-purpose applications. This supports higher uptime and energy efficiency in control panels and distribution boards, delivering measurable cost savings over time. Application: industrial automation racks and motor control centers. Business impact: lower energy waste, extended component life, and simplified thermal management. Feature → NEMA 3R enclosure with Grade 304 stainless steel protection offers robust outdoor capability and corrosion resistance. Impact: safer outdoor operation and extended service life in harsh environments. Application: outdoor substations, loading docks, and outdoor switchgear. Business impact: fewer enclosure-related failures, reduced maintenance costs, and compliant installations. Feature → Tap size 2 at -5% FCBN x 4 at -2.5% FCBN enables precise voltage regulation to match varying loads, minimizing voltage drop and improving device performance. Application: powering sensitive control circuits and instrumentation within plant floors. Business impact: improved voltage stability, reduced equipment stress, and better process accuracy. Feature → 25 kVA, single-phase, 60 Hz rating with primary 240 V/480 V and secondary 120/240 V offers versatile capability for step-down and control circuits, enabling compatible integration with common plant voltages. Application: machine tools, robotics panels, and distribution feeders. Business impact: simplified sourcing, faster deployment, and scalable capacity for growing facilities. Feature → 80 °C rise and copper windings support reliable performance in typical industrial environments, while the 248A wiring tolerance and 300A frame indicate solid fault handling and robust construction. Application: high-demand control rooms and production lines. Business impact: higher resilience, reduced risk of overheating, and longer service life. Feature → Indoor-Outdoor Weathershield and UL Listed certification provide regulatory alignment and environmental protection. Application: mixed indoor-outdoor installations and areas with exposure to moisture. Business impact: compliance assurance, easier audits, and peace of mind for maintenance teams.
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FAQs
This transformer is designed for indoor-outdoor service with a NEMA 3R enclosure and a Grade 304 stainless steel cabinet, making it ideal for control panels, distribution rooms, and outdoor substations where robust environmental protection and reliable power conversion are required.
It is a 25 kVA, single-phase transformer with 60 Hz operation, primary voltages of 240 V or 480 V, and secondary voltages of 120/240 V. It features copper windings and an 80 °C rise rating with 2 at -5% and 4 at -2.5% taps for voltage regulation.
Yes. The enclosure is rated NEMA 3R and uses a Grade 304 stainless steel cabinet, providing corrosion resistance and protection against environmental exposure in outdoor or mixed indoor-outdoor installations.
The unit is UL Listed, ensuring electrical safety compliance. Warranty terms are Eaton’s policy: one year from installation or eighteen months from shipment, whichever occurs first.
Dimensions are 14.06 in (length/depth) × 28.24 in (height) × 22.42 in (width), with an approximate weight of 662 lb, informing foundation, clearance, and mounting considerations.