Eaton S26N11S09 General Purpose Transformer - UL Listed
Part Number: S26N11S09
Quick Summary
Eaton S26N11S09 is a general purpose encapsulated transformer designed for indoor and outdoor power distribution and control panels. For engineers and procurement teams, reliability and weather resistance in demanding spaces are ongoing challenges, especially when installation timelines tighten and space is at a premium. This unit carries UL Listed certification and a NEMA 3R enclosure, enabling versatile outdoor service while withstanding ambient conditions. Its aluminum coil, 9 kVA rating, 60 Hz operation, and primary 270 V with secondary 120/240 V provide flexible, code-compliant power conversion for industrial equipment. Supported by Eaton’s warranty and a solid installation footprint, it helps reduce downtime and lifecycle costs in commercial and manufacturing environments.
Product Information
Extended Description
S26N11S09 Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 179, 60 Hz, single-phase, 270 V, 120/240 V, NONE, 115 °C rise, 9 KVA, indoor-outdoor, 524Y
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S26N11S09
UPC
786680090240
Product Length/Depth
10.52 in
Product Height
19 in
Product Width
13.38 in
Product Weight
142 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
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
179
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
524Y
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
270 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
9 kVA
Weathershield
Indoor-Outdoor
Feature: NEMA 3R enclosure supports indoor-outdoor service, protecting windings and components from dust, moisture, and temperature swings. Business impact: Reduces unplanned downtime and simplifies outdoor installation without additional housings or protective enclosures. Application: Outdoor control panels and harsh factory environments where weather exposure is a concern. Feature: 9 kVA rating at 60 Hz single-phase provides ample headroom for common control loads. Business impact: Minimizes the need for multiple transformers, lowers BOM complexity, and conserves panel footprint. Application: Machine controls, sequence relays, and pilot circuits in manufacturing lines. Feature: Primary 270 V and secondary 120/240 V voltages offer flexible power conversion. Business impact: Enables multi-volt distribution from a single transformer, reducing wiring runs and integration challenges. Application: PLCs, VFDs, and peripheral equipment requiring split-phase power. Feature: Aluminum coil construction and 115 °C rise support reliable performance under full load with improved thermal characteristics. Business impact: Lower weight-related handling concerns, corrosion resistance, and cost efficiency over copper windings. Application: High-temperature, continuous operation in demanding environments. Feature: 524Y wiring connection and UL Listed certification streamline installation and compliance. Business impact: Accelerates field wiring, ensures code compliance, and simplifies cross-brand compatibility within Eaton ecosystems. Application: Panel builders integrating with Eaton distribution components and standard control cabinets.
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FAQs
Install the S26N11S09 by following the 524Y wiring connection scheme and mount within a suitable enclosure. Connect the primary to 270 V and the secondary to 120/240 V circuits, observing correct phase, grounding, and fusing requirements. Ensure the enclosure remains accessible for maintenance and adheres to NEMA 3R guidance for outdoor use.
The unit is a single-phase transformer rated at 9 kVA, operating at 60 Hz. It has a 270 V primary voltage and a 120/240 V secondary, with a 115 °C rise rating and UL Listed certification, making it suitable for robust industrial installations.
Yes. The transformer is designed with a NEMA 3R enclosure and indoor-outdoor protection, enabling reliable service in exterior environments without additional protective housings, which simplifies outdoor panel installations and reduces project time.
The S26N11S09 carries UL Listed certification and is backed by Eaton’s warranty policy (25-000), which provides one year from installation or eighteen months from shipment, whichever comes first, ensuring support for lifecycle reliability.
Dimensions are 10.52 in (length/depth) x 19 in (height) x 13.38 in (width) with a weight of 142 lb. This compact footprint fits typical panel spaces while maintaining structural stability and facilitating handling during installation and service.