Eaton S29N11S81 General-Purpose Transformer - UL Listed
Part Number: S29N11S81
Quick Summary
S29N11S81 general-purpose encapsulated transformer provides reliable 208 V to 120/240 V power conversion for control panels and distribution systems. Engineers face tight spaces, harsh environments, and the need for durable, low-maintenance power supplies, and this unit addresses those concerns with a compact footprint and robust enclosure. Built for indoor-outdoor use, it carries a NEMA 3R rating and UL Listing, reinforcing safety and reliability in demanding installations. With 0.05 kVA output, aluminum winding, and 60 Hz operation, it balances performance and efficiency. The Eaton design supports easy installation and compatibility with standard panel hardware, delivering predictable performance and total cost of ownership savings.
Product Information
Extended Description
S29N11S81 Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 52, 60 Hz, single-phase, 208 V, 120/240 V, NONE, 115 °C rise, 0.05 KVA, indoor-outdoor, 26A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S29N11S81
UPC
786680088155
Product Length/Depth
4 in
Product Height
8.91 in
Product Width
4.11 in
Product Weight
8 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
52
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
26A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
208 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
0.05 kVA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S29N11S81
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: Compact, encapsulated EP design reduces space requirements and simplifies mounting. Benefit: Frees valuable panel real estate and shortens wiring runs, accelerating installation. Application: Retrofit control panels and distributed I/O assemblies in limited spaces. Feature: Aluminum coil construction. Benefit: Lighter weight for handling and improved corrosion resistance in harsh environments, lowering shipping and maintenance costs. Application: Elevated humidity or outdoor installations where durability matters. Feature: NEMA 3R enclosure. Benefit: Weather-resistant protection enables indoor-outdoor placement and reliable operation in varying conditions. Application: Outdoor switchgear adjacencies and outdoor-rated control cabinets. Feature: 0.05 kVA rating with 208 V primary and 120/240 V secondary. Benefit: Suits general control circuits with efficient power delivery and compatibility with common automation components. Application: Panel boards, motor starters, and low-voltage distribution. Feature: 60 Hz, single-phase, 26 A wiring connection. Benefit: Predictable performance in typical North American controls with straightforward wiring harnesses. Application: Standard industrial control panels and machine safety circuits. Feature: UL Listed and Eaton warranty coverage. Benefit: Procurement confidence and ongoing support, reducing regulatory risk and downtime. Application: Electrical design approvals and long-term maintenance planning.
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FAQs
Install the unit in a compliant, NEMA 3R enclosure with standard mounting provisions. Its 8 lb weight and 4 in L x 4.11 in W x 8.91 in H footprint fit compact panels, while the 208 V primary and 120/240 V secondary wiring (26 A) align with common harnesses. Ensure proper clearance and secure termination to meet 60 Hz operation specifications.
The transformer provides 208 V primary voltage and 120/240 V secondary voltage at 60 Hz in a single-phase configuration. It is rated at 0.05 kVA, has aluminum windings, and uses a 26 A wiring connection. The enclosure is NEMA 3R, designed for indoor-outdoor use, and it carries UL Listed certification for safety.
Yes. The NEMA 3R enclosure ratings and indoor-outdoor capability make it suitable for panels exposed to varying weather conditions. The aluminum coil and encapsulated design add durability, while the UL Listed status supports compliance in industrial environments and reduces risk during audits.
This transformer is UL Listed, with a NEMA 3R enclosure rating. These certifications indicate compliance with safety standards and suitability for use in environments that require weather-resistant enclosures, contributing to safer installation and ongoing operation in industrial settings.
Eaton provides a warranty per policy 25-000: one year from date of installation or eighteen months from shipment, whichever occurs first. This coverage, combined with Eaton’s distributor and technical support, helps minimize downtime and supports maintenance planning for control systems using the S29N11S81.