Eaton S20N11E51X Encapsulated Transformer - UL Listed
Part Number: S20N11E51X
Quick Summary
Eaton S20N11E51X encapsulated transformer reliably steps down 240/480 V to 120/240 V for control panels and power distribution across industrial environments. This compact, rugged device helps engineers reduce panel clutter, heat, and maintenance costs while delivering stable voltage for sensitive electronics. It is UL Listed and housed in a NEMA 3R enclosure, ready for indoor-outdoor service, with 50/60 Hz compatibility to fit most regional power systems. Designed for durability, the transformer uses aluminum coil windings and an electrostatically shielded construction to minimize EMI and thermal losses. With a 0.5 kVA rating, it pairs well with mid-range control loads, offering strong total cost of ownership benefits and fast deployment.
Product Information
Extended Description
S20N11E51X Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 58A, 50-60 Hz, single-phase, 240 V, 480 V, 120/240 V, NONE, 115 °C rise, 0.5 KVA, indoor-outdoor, 90A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11E51X
UPC
786680018275
Product Length/Depth
5.75 in
Product Height
11.28 in
Product Width
5.99 in
Product Weight
23 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
50/60 Hz
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
58A
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
90A
Frequency rating
50-60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
0.5 kVA
Special features
Electrostatically shielded
Weathershield
Indoor-Outdoor
Feature: General specifications and enclosure provide a compact footprint and weather-resistant housing. Business Impact: Reduces panel real estate, lowers exposure to dust and moisture, and minimizes maintenance cycles. Application: Ideal for control cabinets and machine builders needing reliable power conversion in mixed indoor-outdoor environments. Feature: Primary and secondary voltages with a 0.5 kVA rating support common industrial loads. Business Impact: Enables stable operation of relays, sensors, and minor motor controls with predictable quick-spot replacements. Application: Suitable for distribution blocks and stand-alone control stations in manufacturing lines. Feature: Aluminum coil and electrostatically shielded design lower weight and EMI/heat losses. Business Impact: Improves energy efficiency, simplifies handling, and reduces electromagnetic interference with nearby equipment. Application: Restricted spaces near noisy drives and PLCs benefit from EMI reduction. Feature: NEMA 3R enclosure and Weathershield capability support indoor-outdoor service. Business Impact: Improves reliability in variable environments, reducing downtime and service calls. Application: Outdoor panels, rain-prone areas, and sheltered locations in industrial facilities. Feature: UL Listed certification and 50/60 Hz performance confirm regulatory compliance and regional compatibility. Business Impact: Speeds procurement, ensures traceability, and minimizes compliance risk for maintenance audits. Application: Facilities following UL requirements and regional power standards can deploy with confidence.
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FAQs
Install the unit within a NEMA 3R enclosure, ensuring a compact 5.75 in depth, 5.99 in width, and 11.28 in height footprint. Connect 240 V or 480 V primary to the transformer and take 120/240 V on the secondary. The product is UL Listed and designed for 50/60 Hz operation, with no tap changer (None). Use proper clearance for cooling and EMI control.
It is a single-phase transformer rated at 0.5 kVA, with primary voltages of 240 V or 480 V and a secondary of 120/240 V. The device operates at 50–60 Hz and rises to 115 °C. The enclosure supports indoor-outdoor use, and the coil material is aluminum, contributing to weight and thermal performance.
Yes. The transformer features a NEMA 3R enclosure and Weathershield for indoor-outdoor service, enabling reliable operation in exposed or variable environments while maintaining UL compliance and EMI control.
The unit is UL Listed and designed for 50/60 Hz operation. The enclosure rating and materials (NEMA 3R, aluminum coil, electrostatic shielding) support compliance with typical industrial power standards and help reduce EMI in sensitive control applications.
The aluminum windings reduce weight and improve thermal response, while the electrostatically shielded design minimizes EMI, lowering interference-related downtime. The rugged indoor-outdoor enclosure and UL listing streamline procurement, installation, and servicing, delivering lower total cost of ownership for control panels and machine builders.