Eaton S27N11S15N Transformer - UL Listed
Part Number: S27N11S15N
Quick Summary
Eaton general purpose encapsulated transformer provides reliable power isolation and voltage transformation for indoor and outdoor electrical panels. Facilities often contend with harsh environments, corrosion, and the need for durable performance across varied temperatures, which can drive unexpected maintenance and downtime. This model offers a rugged NEMA 3R enclosure, aluminum coil construction, and UL Listed certification to support long service life and compliant installations. The 277 V primary and 120/240 V secondary with 60 Hz operation meets common building and industrial distribution requirements, enabling easier integration with existing switchgear. By choosing this transformer, engineers gain predictable performance, reduced maintenance costs, and improved project timelines through installation-friendly design and robust protection.
Product Information
Extended Description
S27N11S15N Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 180, 60 Hz, single-phase, 277 V, 120/240 V, NONE, 115 °C rise, 15 KVA, indoor-outdoor, 524A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S27N11S15N
UPC
786680147098
Product Length/Depth
10.52 in
Product Height
19 in
Product Width
13.38 in
Product Weight
176 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
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
524A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
277 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
15 kVA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S27N11S15N
Selling Policy 25-000 - Distribution and Control Products and Services
Encapsulated construction protects windings from moisture and contaminants, delivering higher reliability in harsh environments and reducing maintenance cycles in outdoor or damp locations. Business impact: longer service life, lower downtime, and lower lifecycle costs for power distribution applications in industrial facilities. Application: ideal for control panels and switchgear in manufacturing floors and commercial buildings where weather exposure is a concern. The 15 kVA rating supports mid-range loads while preserving a compact footprint, allowing installation in tighter spaces without compromising performance. This translates to reduced enclosure size and improved workspace organization on the plant floor. Aluminum coil construction improves heat dissipation and reduces weight relative to copper equivalents, enhancing installation efficiency and responsiveness during service. Suitability for indoor-outdoor use is reinforced by Weathershield and NEMA 3R enclosure, ensuring compliance with safety codes while providing reliable operation in varying climates. The transformer is UL Listed, aligning with stringent electrical standards and facilitating easier procurement and inspection. Wiring designation 524A and a single-phase, 60 Hz input support straightforward integration with most distribution panels. Customer examples show faster commissioning and fewer field issues when matched with standard Eaton catalogs and service resources, contributing to better total cost of ownership for power distribution systems. Compatibility with 277 V to 120/240 V distributions supports common facility upgrades and backup power scenarios, reducing custom engineering effort and accelerating project delivery.
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FAQs
The S27N11S15N is designed for straightforward integration with common distribution panels. It weighs 176 lb and uses a 524A wiring connection, with a NEMA 3R enclosure suitable for indoor-outdoor installations. This reduces the need for special mounting hardware, simplifies wiring compatibility, and minimizes field modifications during panel upgrades or new builds.
Key specs include a 15 kVA rating, single-phase operation at 60 Hz, primary voltage of 277 V, and secondary voltage of 120/240 V. The 115 °C rise rating indicates robust thermal performance. UL Listed certification provides compliance assurance, while the 524A wiring connection streamlines interfacing with standard distribution equipment.
Yes. The transformer features an indoor-outdoor Weathershield design and a NEMA 3R enclosure, making it appropriate for outdoor installations and exposure to varying climates. Its aluminum windings and encapsulated construction further protect windings from moisture and contaminants, reducing maintenance needs in challenging environments.
Eaton provides a one-year warranty from installation or eighteen months from shipment, whichever occurs first, under policy 25-000. This coverage complements UL Listed certification and the robust physical design, giving buyers a clear post-purchase support framework and reduced risk during commissioning.
The combination of a rugged NEMA 3R enclosure, weather-resistant design, and encapsulated aluminum windings reduces field maintenance and replacement frequency. The 15 kVA rating supports scalable load growth, while compatibility with existing 277 V to 120/240 V distribution simplifies retrofits, accelerating project timelines and lowering total cost of ownership.