Eaton S20N11S05CUSS4X Transformer - UL Listed
Part Number: S20N11S05CUSS4X
Quick Summary
The Eaton S20N11S05CUSS4X is a general-purpose encapsulated transformer for indoor-outdoor power distribution panels. Engineers often struggle with protecting equipment from moisture, dust, and temperature rise in harsh environments. UL Listed certification, a rugged NEMA 3R enclosure, and a Grade 304 stainless steel option support safe operation in demanding sites. In practice, this 5 kVA, single-phase transformer with 240/480 V input and 120/240 V output delivers predictable power for control panels and outdoor equipment. The design emphasizes reliability with copper windings, a 60 Hz rating, and a 115 °C rise to sustain performance in demanding applications. This combination minimizes lifecycle costs and simplifies procurement by meeting common industrial standards.
Product Information
Extended Description
S20N11S05CUSS4X Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, NONE, 115 °C rise, 5 KVA, indoor-outdoor
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11S05CUSS4X
UPC
786680081989
Product Length/Depth
9.89 in
Product Height
16 in
Product Width
10.38 in
Product Weight
0.001 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
Grade 304 stainless steel enclosure with NEMA 4X rating
Coil material
Copper
Design
EP
Enclosure
NEMA 3R
Tap size
None
Type
General-Purpose Encapsulated Transformer
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
5 kVA
Weathershield
Indoor-Outdoor
Feature Copper windings and encapsulated design reduce moisture migration, improving reliability in damp environments. This translates to lower maintenance costs and longer service life for control panels. The 5 kVA power rating matches many plant loads, enabling simpler sizing and reducing the need for multiple transformers in a system. Dual primary voltage support, 240/480 V, provides site flexibility and minimizes wiring variety while enabling quick integration into mixed-voltage environments. The secondary output 120/240 V serves essential control and instrumentation needs without extra step-down equipment. The NEMA 3R enclosure, enhanced by a Grade 304 stainless steel option and Weathershield, allows safe outdoor installation with robust corrosion protection. UL Listed certification ensures regional compliance and confidence during audits, while 60 Hz operation supports standard industrial power networks. The compact footprint (9.89 in x 16 in x 10.38 in) and indoor-outdoor capability simplify installation in crowded panels and weather-exposed locations. Copper windings, encapsulation, and copper-to-copper insulation deliver efficient performance with lower thermal losses under continuous duty.
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FAQs
The S20N11S05CUSS4X is designed for single-phase systems with dual primary inputs of 240 V and 480 V. To confirm compatibility, verify your service voltage and ensure the panel can accommodate a 5 kVA transformer footprint. The unit’s primary rating supports either 240 or 480 V, so you can configure the transformer to match your available supply without additional gear. Ensure proper wiring practices, circuit protection, and enclosure clearance per applicable codes.
This transformer is UL Listed, meeting safety and performance standards recognized in North America. UL certification reduces risk during commissioning and audits, supporting reliability for critical control and power distribution applications. The enclosure design aligns with NEMA 3R, offering weather resistance for indoor-outdoor installations, while optional Grade 304 stainless steel enclosure with 4X rating enhances corrosion protection in harsher environments.
Yes. The unit is designed for indoor-outdoor use with a NEMA 3R enclosure and Weathershield designation, as well as a Grade 304 stainless steel option providing 4X-rated corrosion resistance. This combination protects windings and connections from moisture, dust, and environmental exposure, enabling reliable operation in outdoor control panels and equipment housings without frequent enclosure maintenance.
Plan for proper mounting to minimize vibration and allow adequate airflow around the enclosure. Maintain required clearance for service access and wiring, and follow standard practices for 60 Hz, single-phase transformers. Because of the encapsulated design and robust enclosure, the unit tolerates moderate environmental exposure, but ensure it is securely fastened and protected from physical damage in accordance with your plant’s safety policies.
Ideal for control panels, motor starters, and outdoor equipment that require clean 120/240 V secondary power from a 240/480 V source. The 5 kVA rating supports typical instrumentation and control loads, reducing the need for multiple transformers. ROI benefits include lower inventory, fewer installation parts, reduced downtime from weather-related faults, and compliance with UL and NEMA/4X-rated enclosure standards, translating to safer, more reliable operations.