Eaton S29N11S51N General purpose Transformer - UL
Part Number: S29N11S51N
Quick Summary
The Eaton S29N11S51N General purpose encapsulated transformer is designed to reliably convert 208 V mains to 120/240 V secondary for control panels and automation cabinets in industrial environments. In practice, engineers face space constraints and risk of overheating when adding power conversion gear, which this unit helps mitigate with a compact footprint and a 115 °C rise rating. The device carries UL Listed certification and a rugged NEMA 3R enclosure, reinforcing safety and long-term durability in challenging sites. Its aluminum coil and 0.5 kVA capacity deliver dependable performance without overdesign. For OEMs and maintenance teams, the combination of lightweight construction, standard wiring connections, and indoor-outdoor suitability translates to faster installs and lower lifecycle costs.
Product Information
Extended Description
S29N11S51N Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 57, 60 Hz, single-phase, 208 V, 120/240 V, NONE, 115 °C rise, 0.5 KVA, indoor-outdoor, 26A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S29N11S51N
UPC
786680107009
Product Length/Depth
4.91 in
Product Height
8.97 in
Product Width
4.87 in
Product Weight
17 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
57
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
0.5 kVA
Weathershield
Indoor-Outdoor
The S29N11S51N merges a compact footprint with rugged EP aluminum construction, delivering dependable power without crowding critical panels. At 0.5 kVA, it supports common automation loads while helping control cabinet budgets stay predictable. The enclosure is NEMA 3R rated for indoor-outdoor service, protecting windings from dust, moisture, and incidental exposure in demanding industrial environments. Voltage flexibility and wiring discipline: The unit uses a 208 V primary and 120/240 V secondary, enabling multiple loads from a single source and reducing procurement and wiring complexity. A 60 Hz single-phase design paired with a 26 A wiring connection matches typical machine controls, accelerating installation, reducing wiring errors, and simplifying panel layout. The design also minimizes nuisance trips by delivering stable regulation across expected load ranges. Thermal robustness and longevity: A 115 °C rise rating provides a generous thermal margin during peak loads, minimizing hot spots and extending service life in high-demand runs. Aluminum windings improve heat dissipation and reduce weight, contributing to easier handling and lower cooling energy requirements in crowded control rooms. Installation efficiency and compatibility: Dimensions of 4.91 in depth, 8.97 in height, and 4.87 in width, along with a 17 lb weight, support straightforward mounting in tight control panels. Encapsulation offers moisture resistance and short-circuit protection, while UL Listed certification helps validate safety and compliance for regulated facilities. The unit is compatible with standard panel mounting practices and Eaton reference materials. Operational value and support: This transformer integrates with standard industrial power distributions, delivering predictable performance and low lifecycle cost. Access Eaton data sheets and catalogs for precise wiring diagrams, mounting guidelines, and replacement strategies, ensuring smooth maintenance, spare parts planning, and a faster time-to-operate on new builds.
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FAQs
Mount the S29N11S51N using standard panel rails or mounting surfaces compatible with a compact 4.91 in depth, 8.97 in height, and 4.87 in width enclosure. Consolidate wiring with a 26A connection and ensure proper clearance for ventilation. Refer to Eaton installation guides for torque specs, wiring diagrams, and safety precautions to prevent mis-wiring and overheating.
Key specs include a 0.5 kVA rating, 208 V primary input, 120/240 V secondary output, 60 Hz single-phase operation, and a 115 °C rise rating. The aluminum winding provides efficient heat dissipation, and UL Listed certification confirms safety and compliance for industrial environments. Plan loads to stay within the 0.5 kVA limit to avoid voltage drop or overheating.
Yes. The S29N11S51N is built with a NEMA 3R enclosure and indoor-outdoor capability, making it suitable for panels exposed to dust, moisture, or fluctuating ambient conditions. Its UL Listed status supports compliance in regulated facilities, and the rugged enclosure design helps maintain performance in challenging industrial sites.
This model is UL Listed, indicating safety and performance compliance for industrial applications. The NEMA 3R enclosure contributes to weather resistance, which, while not a certification, aligns with industry expectations for outdoor or semi-outdoor installations. Always verify local electrical codes and project specifications when planning deployments.
The 0.5 kVA, aluminum coil design, and compact footprint minimize heat generation and facilitate easy replacement or retrofits. UL Listing reduces compliance risk, while the rugged EP encapsulation supports long service life in demanding environments. Access Eaton datasheets for wiring diagrams and commissioning guidance to optimize uptime and reduce maintenance spend.