Eaton S20N11S51X Transformer - UL Listed 0.5 kVA
Part Number: S20N11S51X
Quick Summary
The Eaton S20N11S51X transformer delivers reliable general-purpose power conversion for control panels and industrial equipment. In tight spaces or outdoor installations, transformers can struggle with weather exposure and mounting flexibility. This unit is UL Listed and housed in a NEMA 3R enclosure, with aluminum windings and a 50/60 Hz rating to handle varied environments. Its 0.5 kVA rating and 240/480 V primary to 120/240 V secondary configuration simplify spare parts and wiring, reducing on-site complexity. By combining rugged construction with compact dimensions, it supports safer, faster installations and lower lifecycle costs, while enabling standardization across mixed-voltage workloads in electrical distribution and automation systems.
Product Information
Extended Description
S20N11S51X Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 57, 50-60 Hz, single-phase, 240 V, 480 V, 120/240 V, NONE, 115 °C rise, 0.5 KVA, indoor-outdoor, 3A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11S51X
UPC
786680027789
Product Length/Depth
4.91 in
Product Height
8.97 in
Product Width
4.87 in
Product Weight
16 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
57
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
3A
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
Weathershield
Indoor-Outdoor
Feature: EP encapsulated construction with aluminum windings. Business Impact: The encapsulation improves moisture, dust, and vibration resistance, boosting uptime and reducing maintenance costs. Application: Suitable for control cabinets and harsh environment machinery where reliability is critical. Feature: Versatile voltage ratings—primary 240/480 V and secondary 120/240 V; 0.5 kVA rating. Business Impact: Supports multiple supply configurations from a compact footprint, reducing spare parts and wiring complexity. Application: Ideal for panel power distribution in automation systems and industrial controls. Feature: NEMA 3R enclosure with indoor-outdoor weathershield. Business Impact: Delivers rugged performance across indoor and outdoor installations, meeting safety standards. Application: Great for outdoor equipment shelters and damp facilities. Feature: UL Listed certification. Business Impact: Provides compliance assurance for electrical safety and installation codes, streamlining procurement. Application: Meets regulatory requirements for general-purpose transformers in commercial and industrial facilities. Feature: Compact footprint—approx 4.87 in W x 4.91 in D x 8.97 in H; weight 16 lb; 57 frame. Business Impact: Small-sized, lightweight transformer simplifies integration into crowded panels, reduces enclosures and mounting hardware. Application: Suitable for panel mounting and compatible with 57 frame dimensions across Eaton's product line.
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FAQs
Begin with proper panel clearance and verify voltage compatibility (240/480 V primary, 120/240 V secondary). Mount the unit within a 57 frame space, ensure the NEMA 3R enclosure is sealed against environmental exposure, and connect 3A wiring per Eaton installation guidelines. The UL Listed rating confirms compliance when installed per spec, reducing rework and safety concerns.
This is a single-phase, 0.5 kVA transformer with primary voltages of 240 V and 480 V and secondary voltages of 120/240 V. It operates at 50/60 Hz and uses aluminum windings in an EP encapsulated design for enhanced reliability in industrial environments.
Yes. It features a NEMA 3R enclosure and an indoor-outdoor weathershield design, making it appropriate for outdoor shelters and damp indoor locations while maintaining safety and performance standards.
The unit is UL Listed and built with a rugged NEMA 3R enclosure. These certifications and ratings provide safety assurances, compatibility with standard electrical systems, and streamlined procurement for industrial facilities seeking compliant, reliable power distribution components.
Encapsulation with aluminum windings reduces moisture ingress, dust intrusion, and vibration-related wear, lowering field failure rates and maintenance costs. The compact 0.5 kVA, dual-voltage design also simplifies inventory and panel wiring, improving installation speed and lifecycle cost for automation and control applications.