Eaton S20K11S03SS4X General-purpose transformer - NEMA 4X
Part Number: S20K11S03SS4X
Quick Summary
Eaton S20K11S03SS4X general-purpose encapsulated transformer provides reliable power conversion for control panels and industrial equipment. Facilities often struggle with moisture, dust, and space constraints that complicate transformer selection and maintenance. Key protections include a NEMA 4X Grade 304 stainless steel enclosure for indoor-outdoor use, WeatherShield protection, and a 150°C rise rating, helping meet rugged industrial requirements. Coupled with 60 Hz single-phase operation and taps for -10% and -5% FCBN, it simplifies field wiring and voltage stability in 240/480 V to 120/240 V applications. By integrating these features with a 3 kVA rating, aluminum windings, and Eaton's warranty, it delivers reliable performance and lowers total cost of ownership for automation projects.
Product Information
Extended Description
S20K11S03SS4X Eaton: Eaton, general purpose encapsulated transformer, ep 240 x 480v 1 at -10% fcbn x 2 at -5% fcbn 120/240v 150°c 3 kva aluminum windings 176 9a indoor-outdoor 60 hz nema 4x
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20K11S03SS4X
UPC
786680115974
Product Length/Depth
8 in
Product Height
14.25 in
Product Width
7.69 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
Contact Manufacturer
Catalog Notes
NEMA 4X Grade 304 stainless steel enclosure.
Coil material
Aluminum
Design
EP
Enclosure
NEMA 4X
Tap size
1 at -10% FCBN x 2 at -5% FCBN
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
150 °C rise
Volt ampere rating
3 kVA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S20K11S03SS4X
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 3 kVA general-purpose encapsulated transformer provides dependable power for control panels and automation equipment. Business Impact: Stable voltage delivery minimizes equipment misoperation and downtime, boosting line throughput and process reliability. Application: Ideal for retrofit projects and new machine builds in factory environments with mixed loads and demanding duty cycles. Long-tail keywords integrated: general-purpose encapsulated transformer, 3 kVA transformer, Eaton control panels. Feature: Primary 240/480 V and secondary 120/240 V ratings. Business Impact: Simplifies integration with common industrial power sources, reducing wiring complexity and stocking requirements. Application: Suitable for automation controllers, sensors, and PLCs across varied plant sections. Long-tail keywords integrated: 240/480 V primary, 120/240 V secondary, automation panels. Feature: Tap size -10% FCBN x 2 at -5% FCBN. Business Impact: Improves voltage regulation during supply fluctuations, lowering nuisance trips and equipment stress. Application: Critical for precise control in processes with variable mains voltage and soft-start devices. Long-tail keywords integrated: voltage taps, FCBN taps, voltage regulation. Feature: NEMA 4X Grade 304 stainless steel enclosure with WeatherShield. Business Impact: Delivers corrosion resistance and outdoor-indoor versatility, reducing maintenance and replacement costs. Application: Outdoor control cabinets, washdown zones, and harsh environments. Long-tail keywords integrated: NEMA 4X enclosure, indoor-outdoor transformer, corrosion resistance. Feature: Aluminum windings and 60 Hz single-phase operation. Business Impact: Cost-efficient construction with adequate thermal performance, enabling easy installation and reliable operation in most automation networks. Application: General-purpose power conversion in modern industrial facilities. Long-tail keywords integrated: aluminum windings, single-phase transformer, 60 Hz efficiency. Feature: Warranty and compliance indicators. Business Impact: Provides clear support expectations and reduces risk for procurement decisions. Application: Industrial deployments requiring formal coverage terms and documented service policies. Long-tail keywords integrated: 1-year warranty, 18-month shipment window, Eaton policy.
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FAQs
This transformer is designed for indoor-outdoor use with a NEMA 4X stainless steel enclosure, WeatherShield protection, and a footprint that suits compact control panels. For installation, ensure correct mounting within your panel space, provide proper clearance for cooling, and verify that the 240/480 V primary and 120/240 V secondary wiring align with your distribution scheme. Consider the -10% and -5% taps to address supply variance.
Key specs include a 3 kVA rated output, single-phase operation at 60 Hz, primary voltages of 240 V and 480 V, secondary voltages of 120/240 V, aluminum windings, and a 150 °C rise. Tap changes are -10% for one tap and -5% for two taps (FCBN). Enclosure is NEMA 4X for indoor-outdoor use, with an indoor-outdoor weather protection rating.
Yes. The transformer uses a NEMA 4X Grade 304 stainless steel enclosure and WeatherShield protection, making it suitable for indoor-outdoor installations, including exposure to moisture and washdown environments. This rugged construction helps reduce corrosion risk and maintenance in harsh industrial settings.
The unit carries Eaton's warranty policy of one year from installation or eighteen months from shipment, whichever comes first. This provides a clear, enforceable period for support and replacement if a manufacturing defect or performance issue arises during typical automation deployments.
With a 3 kVA rating, aluminum windings for cost and weight efficiency, and a rugged NEMA 4X enclosure, this transformer reduces maintenance and part variety while simplifying installation. The -10% and -5% taps help maintain voltage stability under fluctuating mains, which lowers downtime and extends equipment life, delivering meaningful total cost of ownership benefits.