Eaton S20N11B02CU General-Purpose Encapsulated Transformer - UL Listed
Part Number: S20N11B02CU
Quick Summary
Eaton S20N11B02CU general purpose encapsulated transformer is a reliable power source for control panels and industrial automation equipment. This 2 kVA, single‑phase unit simplifies voltage management across 240/480 V primary and 120/240 V secondary rails, reducing wiring complexity. Many engineers face climate and durability gaps; indoor-outdoor service with NEMA 3R protection and UL Listed certification address that risk. The design emphasizes copper windings and a compact form factor to fit crowded panels while maintaining efficiency. By combining rugged enclosure and clear voltage isolation, it supports faster installations, consistent performance, and lower lifecycle costs for manufacturers and integrators.
Product Information
Extended Description
S20N11B02CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 176, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, NONE, 80 °C rise, 2 KVA, indoor-outdoor, 3A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11B02CU
UPC
786685267203
Product Length/Depth
8 in
Product Height
14.25 in
Product Width
7.69 in
Product Weight
60 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
Coil material
Copper
Design
EP
Enclosure
NEMA 3R
Frame
176
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
2 kVA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S20N11B02CU
Selling Policy 25-000 - Distribution and Control Products and Services
Feature copper windings → Business Impact improved efficiency and heat management → Application control panels and automation equipment requiring reliable voltage isolation. Feature 2 kVA rating → Business Impact supports typical control loads with headroom for startup surges → Application machine control, drives, and I/O panels. Feature primary 240/480 V and secondary 120/240 V → Business Impact broad voltage compatibility reduces wiring errors and inventory needs → Application OEM panel builds and retrofit projects. Feature 60 Hz single-phase operation → Business Impact standardization across US facilities improves interoperability and maintenance planning → Application general-purpose power distribution in diverse machines. Feature NEMA 3R enclosure and indoor-outdoor use → Business Impact ruggedness and weather protection minimize field failures and service calls → Application outdoor control cabinets, wash-down areas, and exposed installations. Feature 80 °C rise rating and copper coil design → Business Impact reliable performance under load with longer service life and predictable temperatures → Application continuous operation in demanding environments. Feature UL Listed certification → Business Impact regulatory confidence and procurement ease → Application compliance for electrical assemblies and traceability.
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FAQs
When installing the S20N11B02CU, ensure it fits the 14.25 inch height, 8 inch depth, and 7.69 inch width of the enclosure and mounting footprint. Use a compatible cabinet or panel with NEMA 3R protection for indoor-outdoor placement. Verify the primary and secondary wiring matches the 240/480 V to 120/240 V configuration and observe the 60 Hz supply for correct operation.
The transformer supports a 240/480 V primary and a 120/240 V secondary configuration. It is a single-phase device designed for 60 Hz operation, with copper windings that deliver reliable isolation and voltage transformation for control panels and automation equipment.
Yes. The S20N11B02CU utilizes a NEMA 3R enclosure rated for indoor-outdoor service, offering weather-resistant protection. This makes it suitable for outdoor panels and exposure to varying ambient conditions, while maintaining safety and performance in industrial environments.
The unit is UL Listed, confirming compliance with recognized safety standards. It features a rugged enclosure suitable for indoor-outdoor use and includes a one-year warranty from Eaton’s policy 25-000 or eighteen months from shipment, whichever occurs first, enhancing procurement confidence and long-term support.
The encapsulated copper-windings design reduces moisture ingress and wear, contributing to lower maintenance needs and longer service life. With 2 kVA capacity and robust NEMA 3R protection, installations experience fewer field failures and downtime, delivering a favorable total cost of ownership for OEMs and integrators managing multiple control panels.