Eaton S26N11S05 Transformer - UL Listed, NEMA 3R
Part Number: S26N11S05
Quick Summary
Eaton S26N11S05 Transformer provides reliable power isolation and voltage conversion for industrial control panels. In today’s automation environments, space constraints and downtime costs demand rugged, compliant solutions. This unit carries UL Listed certification and a NEMA 3R enclosure, enabling indoor-outdoor installation, with a 60 Hz single‑phase configuration and a 5 kVA rating. The aluminum coil and 115 °C rise specification support durable operation in demanding settings, while the compact footprint helps optimize panel layouts. Designed for general‑purpose applications across manufacturing and process industries, this transformer delivers consistent voltage conversion from 270 V to 120/240 V, reducing wiring complexity and improving reliability for critical loads.
Product Information
Extended Description
S26N11S05 Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 177, 60 Hz, single-phase, 270 V, 120/240 V, NONE, 115 °C rise, 5 KVA, indoor-outdoor, 524Y
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S26N11S05
UPC
786680082061
Product Length/Depth
9.89 in
Product Height
16 in
Product Width
10.38 in
Product Weight
123 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
177
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
5 kVA
Weathershield
Indoor-Outdoor
Feature: General-purpose encapsulated design with a durable NEMA 3R enclosure provides indoor-outdoor capability. Business Impact: Expands installation options and reduces weather-related risk, lowering deployment time and enabling faster project timelines. Application: Control panels and outdoor enclosures in manufacturing environments. Feature: Aluminum coil construction with a 115 °C rise rating enhances heat tolerance and longevity. Business Impact: Improves reliability under continuous duty and reduces maintenance costs by resisting thermal aging. Application: Continuous operation in hot or variable ambient conditions. Feature: 60 Hz, single-phase operation at 5 kVA supports scalable power delivery for general-purpose loads. Business Impact: Handles common automation loads with clean voltage conversion, reducing circuit loading and improving efficiency. Application: Plant-wide controls, vending, and distributed automation nodes. Feature: Wiring connection 524Y and no taps simplify installation and wiring errors. Business Impact: Speeds up commissioning and lowers miswiring risk during panel assembly. Application: New builds and retrofits where quick, reliable wiring is critical. Feature: Indoor-outdoor suitability and UL Listed certification provide compliance and safety assurance. Business Impact: Meets regulatory requirements and vendor specifications, reducing audit findings and purchase risk. Application: Industrial environments with exposure to dust, moisture, and varying temperatures. Insight: The combination of 177 frame, compact footprint, and 123 lb weight aids field serviceability and transport without compromising performance in demanding automation settings.
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FAQs
For proper installation, mount the unit in a protected area that supports indoor-outdoor use due to the NEMA 3R enclosure. The transformer measures 9.89 in L x 10.38 in W x 16 in H and weighs 123 lb, with 524Y wiring. Ensure adequate clearance for cooling and secure mounting to a rigid panel or base. Use appropriate vibration isolation and follow the 60 Hz single-phase electrical design to prevent voltage drop and noise interference.
The unit provides a 270 V primary and a 120/240 V secondary with a 5 kVA power rating at 60 Hz. It is a single-phase transformer using an aluminum coil and is designed for indoor-outdoor operation under a 115 °C rise. There are no taps, and the wiring connection is identified as 524Y, simplifying panel integration and reducing miswiring risks.
The S26N11S05 is UL Listed, ensuring compliance with safety requirements for industrial equipment. It features a NEMA 3R enclosure suitable for indoor-outdoor use, which supports installation in varied environments. These certifications help satisfy regulatory audits and customer procurement criteria while assuring ongoing protection for personnel and equipment.
This transformer excels in general-purpose control panels, motor starters, and distributed automation nodes where reliable 270 V to 120/240 V conversion is needed. Its rugged aluminum coil and 5 kVA capacity support scalable power delivery for automation equipment, sensors, and actuators, reducing wiring complexity and enabling efficient power management across manufacturing lines.
Eaton provides a one-year warranty from installation or 18 months from shipment, whichever occurs first. This coverage, along with UL Listed certification and robust NEMA 3R enclosure, offers confidence in performance, device uptime, and long-term maintenance planning for plant-wide power distribution.