Eaton S20N11B01CUSS Encapsulated Transformer - UL Listed
Part Number: S20N11B01CUSS
Quick Summary
S20N11B01CUSS is a general-purpose encapsulated transformer for 120/240 V control power from 240/480 V mains. It is designed to simplify panel layouts and reduce installation time in industrial automation where space is at a premium. Engineers often struggle with reliable operation in harsh environments, limited mounting options, and compliance risk. This unit delivers UL Listed safety, a robust NEMA 3R enclosure for indoor-outdoor service, and corrosion resistance with a Grade 304 stainless steel enclosure. By combining compact size with proven Eaton reliability, it lowers lifecycle costs, minimizes downtime, and supports scalable control schemes across machines and production lines.
Product Information
Extended Description
S20N11B01CUSS Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 67, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, NONE, 80 °C rise, 1 KVA, indoor-outdoor, 3A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11B01CUSS
UPC
786685197326
Product Length/Depth
6.52 in
Product Height
13.41 in
Product Width
6.37 in
Product Weight
0.001 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
67
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
3A
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
1 kVA
Weathershield
Indoor-Outdoor
Feature: Copper-wound coils in a general-purpose encapsulated design. Benefit: Reduced winding losses and high reliability in compact form factors, enabling efficient control power in crowded panels. Application: Control panels and automation cabinets where space is limited and performance matters. Feature: Primary voltage 240 V / 480 V with secondary 120/240 V. Benefit: Flexible sourcing for common factory mains and control circuits, simplifying wiring schemes and stocking. Application: PLCs, relays, and motor-start logic in machine tools and packaging lines. Feature: NEMA 3R enclosure with indoor-outdoor capability and Grade 304 stainless steel notes. Benefit: Rugged protection against moisture and corrosion, enabling outdoor or harsh indoor locations with minimal enclosure maintenance. Application: Outdoor equipment enclosures, substations, and harsh factory environments. Feature: 1 kVA rating with 60 Hz single-phase operation and 80 °C rise. Benefit: Adequate control power without overheating in typical automation loads, reducing cooling needs and maintenance intervals. Application: Panel boards and machine controls across manufacturing lines. Feature: UL Listed certification and Eaton warranty. Benefit: Compliance assurance for safety standards and rapid vendor support, lowering procurement risk and total cost of ownership. Application: Procurement and commissioning for regulated facilities and critical control systems. Feature: Weathershield Indoor-Outdoor capability and 3A wiring connection. Benefit: Versatile installation options and straightforward mechanical hookup, speeding installation and serviceability. Application: General-purpose control transformers in flexible production layouts.
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FAQs
Start by confirming panel depth and width compatibility: the unit measures 6.52 in deep, 6.37 in wide, and 13.41 in tall. Ensure your panel can accommodate a 1 kVA, single-phase transformer with copper windings and a 3A wiring connection. Verify voltage requirements (240/480 V primary to 120/240 V secondary) and confirm the enclosure is rated for indoor-outdoor use (NEMA 3R).
The transformer supports a primary voltage of 240 V and 480 V, with a secondary voltage of 120/240 V. This configuration is ideal for supplying control power to PLCs, relays, and other automation devices from standard industrial mains.
Yes. It features a NEMA 3R enclosure designed for indoor-outdoor service and UL Listed safety. The enclosure, combined with corrosion-resistant design notes (Grade 304 stainless steel enclosure) and robust construction, makes it suitable for outdoor or damp environments when properly installed.
Eaton provides a warranty aligned with policy 25-000: one year from the date of installation or eighteen months from shipment, whichever occurs first. This is complemented by Eaton’s technical support and service channels to assist with installation, testing, and ongoing maintenance.
With copper windings and a 1 kVA rating, the transformer delivers reliable, low-loss control power, reducing waste heat and improving overall system efficiency. Its compact, rugged design lowers space and maintenance costs, while UL compliance and a robust enclosure help minimize downtime and risk, delivering a favorable total cost of ownership in automated plants.