Eaton S20L11S15N General-Purpose Encapsulated Transformer - UL Listed
Part Number: S20L11S15N
Quick Summary
Eaton S20L11S15N general-purpose encapsulated transformer safely steps voltage for control panels and industrial equipment. Manufacturers often grapple with outdoor exposure, space constraints, and the need to maintain reliable 240/480 V primary to 120/240 V secondary conversion across diverse loads. It carries UL Listed safety certification and uses a rugged NEMA 3R enclosure, with an aluminum coil and 115 °C rise for dependable indoor-outdoor service. This model supports indoor-outdoor installations and aligns with common panel-building standards, helping engineers and procurement teams simplify sourcing, reduce spare parts, and improve uptime in power distribution applications. The result is a robust, maintainable solution for industrial plants and process facilities.
Product Information
Extended Description
S20L11S15N Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 180, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, 2 at -5% FCBN X 4 at -2.5% FCBN, 115 °C rise, 15 KVA, indoor-outdoor, 23A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20L11S15N
UPC
786680103537
Product Length/Depth
10.52 in
Product Height
19 in
Product Width
13.38 in
Product Weight
210 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
Model N
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
180
Tap size
2 at -5% FCBN x 4 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
23A
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
15 kVA
Weathershield
Indoor-Outdoor
Feature → Business Impact → Application: 15 kVA, single-phase, 60 Hz transformer with primary 240 V and 480 V and secondary 120/240 V delivers flexible voltage transformation for diverse loads in a compact footprint, reducing wiring complexity and inventory. This enables faster panel assembly and improved uptime in control cabinets and distribution panels across manufacturing facilities. Feature → Ballast-like reliability → Application: Aluminum coil and encapsulated EP design provide low thermal rise and durable operation in challenging environments, improving long-term performance and reducing maintenance costs for outdoor and indoor installations. Feature → NEMA 3R enclosure and indoor-outdoor suitability → Application: Weather- and corrosion-resilient housing protects critical voltage conversion equipment in exposed locations, streamlining site compliance and installation workflows in industrial plants. Feature → Tap settings 2 at -5% FCBN x 4 at -2.5% FCBN → Application: Minor voltage regulation without external autotransformers, supporting precise voltage control for critical process equipment and sensitive PLC inputs. Feature → UL Listed safety certification and 1-year warranty → Application: Proven compliance and support reduce procurement risk, enable standardization across projects, and lower total cost of ownership in power management and distribution strategies.
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FAQs
Installation requires mounting the transformer in a suitable enclosure or panel space rated for indoor-outdoor use. Connect the primary leads to 240 V and 480 V supply as appropriate, then wire the secondary outputs to 120 V and 240 V circuits. Ensure proper grounding, observe the 60 Hz rating, and use the 23A wiring connection specs to align with your control circuitry.
Key specs include a 15 kVA VA rating, single-phase configuration, 60 Hz frequency, primary voltages of 240 V and 480 V, secondary voltages of 120/240 V, aluminum coil, EP encapsulation, and a 115 °C rise. It is UL Listed and designed for indoor-outdoor operation in a NEMA 3R enclosure.
Yes. The NEMA 3R enclosure plus indoor-outdoor capability makes it well-suited for outdoor control panels and exposed installation sites, delivering reliable voltage transformation while withstanding weather and contamination. Ensure proper mounting and clearances per Eaton guidelines to maximize service life.
The S20L11S15N carries UL Listed safety certification and is designed with an indoor-outdoor NEMA 3R enclosure. These features support compliance in industrial environments and facilitate safe integration into power distribution and control systems.
Benefits include reduced downtime due to rugged construction, lower spare-part needs from a single 15 kVA unit for multiple loads, and improved reliability in fluctuating electrical environments. The aluminum coil, encapsulated design, and proven protection ratings translate to longer service life and lower lifecycle costs.