Eaton S20N14S05CU Encapsulated Transformer - UL Listed
Part Number: S20N14S05CU
Quick Summary
S20N14S05CU general purpose encapsulated transformer is designed to provide reliable power transformation for industrial control panels and equipment. Engineers often struggle with compact, weather-resistant solutions that balance space constraints with dependable voltage conversion. UL Listed certification and a NEMA 3R enclosure support indoor-outdoor installations, while copper windings and a 5 kVA rating maintain performance under load. For OEMs and maintenance teams, this transformer translates to faster installs, reduced spare-part inventories, and predictable control power across distributed assets. Its 60 Hz compatibility and 240/480 V primary with 110/220 V secondary design accommodate a wide range of industrial environments, from automation cabinets to outdoor drives.
Product Information
Extended Description
S20N14S05CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 177, 60 Hz, single-phase, 240 V, 480 V, 110/220 V, NONE, 115 °C rise, 5 KVA, indoor-outdoor, 3M
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N14S05CU
UPC
786680068232
Product Length/Depth
9.89 in
Product Height
16 in
Product Width
10.38 in
Product Weight
120 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
Coil material
Copper
Design
EP
Enclosure
NEMA 3R
Frame
177
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
3M
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
110/220 V
Temperature rise
115 °C rise
Volt ampere rating
5 kVA
Weathershield
Indoor-Outdoor
Feature: Copper-wound, encapsulated EP design. Benefit: Delivers stable voltage transformation with low noise and improved short-circuit resistance, reducing downtime and maintenance costs. Application: Ideal for general-purpose control panels and automated manufacturing lines. Feature: Flexible primary/secondary voltages (240/480 V to 110/220 V). Benefit: Simplifies wiring schemes and eliminates multiple part variants, accelerating installation and retrofit projects. Application: Retrofit of legacy equipment and new machine builds. Feature: NEMA 3R enclosure with indoor-outdoor suitability. Benefit: Weather-resistant operation expands placement options and guards against environmental factors. Application: Outdoor cabinets and perimeter equipment in harsh facilities. Feature: Weathershield capability and 3M wiring connection. Benefit: Enhanced durability and straightforward field wiring, shortening commissioning time. Application: Harsh industrial environments and rapid panel assembly. Feature: UL Listed with 5 kVA rating and 60 Hz single-phase operation. Benefit: Compliance assurance and sufficient power for mid-range control loads, lowering procurement risk. Application: Industrial control power for machines, drives, and automation panels. Feature: Compact footprint and weight (9.89 in L × 10.38 in W × 16 in H, 120 lb). Benefit: Easier installation planning and mounting in limited spaces. Application: Retrofit projects and crowded control rooms.
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FAQs
The S20N14S05CU features copper winding with a 3M wiring connection, designed for straightforward field wiring in standard control panel applications. Its encapsulated EP construction minimizes dust intrusion and vibration, simplifying mounting and reducing maintenance. For installation, plan a suitable indoor or outdoor location (NEMA 3R suitability) and route conductors in a clean, protected enclosure to meet best-practice safety and reliability standards.
Yes. The transformer is built with a NEMA 3R enclosure and indoor-outdoor ratings, plus UL Listed safety certification, making it appropriate for both indoor control cabinets and outdoor installations. Its 5 kVA rating supports typical automation loads, while copper windings ensure efficient voltage conversion even in varying environmental conditions.
The S20N14S05CU has a primary voltage option of 240 V or 480 V and a secondary voltage of 110/220 V. This dual-primary, dual-secondary configuration provides flexible integration with existing equipment and reduces the need for additional power converters in many control and automation applications.
This Eaton transformer is UL Listed, confirming compliance with safety standards. It is designed for indoor-outdoor use with a NEMA 3R enclosure, and it carries a one-year warranty from installation or eighteen months from shipment, whichever occurs first, under Eaton’s policy 25-000. These elements support procurement confidence and long-term maintenance planning.
A 5 kVA rating provides ample power for medium-duty control circuits, with the 115°C rise indicating robust thermal performance under load. In hot environments, this translates to reliable voltage regulation and sustained performance, provided adequate ventilation and proper load sizing. Copper windings further enhance efficiency and thermal stability, minimizing energy loss during peak operation.