Eaton S20N11S10SS Transformer - NEMA 3R Encapsulated
Part Number: S20N11S10SS
Quick Summary
The Eaton S20N11S10SS transformer provides reliable 10 kVA single‑phase power for industrial panel distributions. It addresses space constraints, outdoor exposure, and the need for quick, maintenance‑friendly replacements in rugged environments. Key protective features include a NEMA 3R enclosure, the FR179 frame, and an 185°C insulation system, enabling dependable indoor‑outdoor service. This general‑purpose encapsulated transformer pairings with aluminum windings and a compact footprint, delivering strong value for established electrical controls and distribution needs while supporting efficient procurement and long‑term reliability.
Product Information
Extended Description
S20N11S10SS Eaton: Eaton Type EP General-purpose encapsulated transformers, EP1200 and 2000A, Aluminum windings, NEMA 3R Encl, FR17960, 60 Hz, 185ºC Insulation System, 10 kVA, Single-phase, 240 x 480 V, 120/240 V, 45 dB, 115°C, IndoorOutdoor
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11S10SS
UPC
786680000102
Product Length/Depth
11 in
Product Height
19 in
Product Width
14 in
Product Weight
193 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
To place an order for replacement parts, please call 1-800-356-1243.
Coil material
Aluminum
Design
EP
Feed type
Top/bottom
Enclosure
NEMA 3R
Frame
FR179
Insulation
185 ºC insulation system, 115 ºC rise standard
Tap size
None
Type
General-Purpose Encapsulated Transformer
Amperage Rating
1200A, 2000A
Frequency rating
60 Hz
kVA
10 kVA
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Sound Level
45 dB
Temperature rise
150 °C rise
Volt ampere rating
10 kVA
Used with
QA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S20N11S10SS
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The S20N11S10SS is a 10 kVA, single‑phase transformer designed for 240/480 V primary to 120/240 V secondary power conversion, at 60 Hz. This capacity supports equipment starting and control circuits within machine panels, reducing the need for multiple smaller devices and cutting installation time. In practice, engineers experience improved uptime and simplified wiring in control cabinets for packaging, metalworking, and process lines. Feature → Business Impact → Application: Aluminum coil windings enhance thermal performance and corrosion resistance, delivering robust service in harsh environments. The result is lower maintenance costs and extended service life in outdoor or semi‑indoor installations, such as outdoor switchgear or enclosures. Feature → Business Impact → Application: NEMA 3R enclosure and FR179 frame enable indoor‑outdoor use with dependable protection against dust, moisture, and temperature fluctuations, minimizing enclosure breaches and weather‑related faults in food processing, water treatment, and logistics automation. Feature → Business Impact → Application: 11 in length, 19 in height, and 14 in width with a weight of 193 lb allow straightforward installation in tight spaces and easier retrofit in existing panels, improving project timelines and reducing labor costs. Feature → Business Impact → Application: The unit ships with clear catalog notes and readily available replacement parts, supporting faster service interventions and lower total cost of ownership for maintenance teams managing multiple transformers.
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FAQs
For optimal performance, allow adequate clearance for ventilation and access to terminals. Ensure mounting on a stable surface that supports the 193 lb weight, with attention to top/bottom feed wiring as provided. Plan for indoor-outdoor placement under the NEMA 3R enclosure and FR179 frame, and verify 60 Hz service and correct primary voltage (240/480 V) to avoid voltage mismatch and overheating.
The unit delivers 10 kVA at 60 Hz as a single‑phase transformer with primary windings of 240 V and 480 V and secondary windings of 120/240 V. It uses aluminum windings, weighs 193 lb, and operates within an insulation system rated at 185 °C rise. The sound level is 45 dB, and the enclosure is NEMA 3R for indoor‑outdoor use.
Yes. The S20N11S10SS is designed for indoor‑outdoor service with a NEMA 3R enclosure and a rugged FR179 frame. Its aluminum windings and 185 °C insulation system support reliable operation in varied climates, while the enclosure provides protection against dust, moisture, and temperature swings typical of outdoor equipment rooms and perimeter installations.
Eaton’s policy 25-000 provides a one‑year warranty from installation or eighteen months from shipment, whichever occurs first. For replacement parts, refer to the catalog notes and contact Eaton support at the designated number. Routine maintenance intervals and checklists are recommended to sustain performance and meet the expected 10 kVA, single‑phase rating.
The S20N11S10SS consolidates transformer capacity into a single robust unit with durable aluminum windings, reducing spare part variety and maintenance complexity. Its NEMA 3R protection minimizes weather‑related failures, lowering downtime. The result is improved equipment availability, faster replacements, and a lower total cost of ownership (TCO) across multi‑transformer installations in automotive, packaging, and process industries.