Eaton S20N11S03SS General-Purpose Transformer - UL Listed
Part Number: S20N11S03SS
Quick Summary
Eaton S20N11S03SS General-Purpose Transformer provides clean, reliable power for control panels and equipment rooms. Engineers often confront voltage compatibility, harsh environments, and rising maintenance costs that drive downtime. UL Listed safety certification and a rugged NEMA 3R enclosure for indoor-outdoor service help ensure regulatory compliance and long-term durability. The design emphasizes efficiency and reliability, with aluminum windings and a fixed 240/480 V primary to 120/240 V secondary configuration suitable for standard low-voltage distribution in automation deployments. This combination delivers tangible business value by simplifying installation, reducing service intervals, and supporting scalable PLCs, relays, and motor-control applications in industrial environments.
Product Information
Extended Description
S20N11S03SS Eaton: Eaton, general purpose encapsulated transformer, ep, single-phase, pv: 240 x 480v, taps: none, sv: 120/240v, 115°c, 3 kva, al windings, frame: 176, indoor-outdoor
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11S03SS
UPC
786680000072
Product Length/Depth
8 in
Product Height
14.25 in
Product Width
7.69 in
Product Weight
64 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
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
176
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
3A
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
3 kVA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S20N11S03SS
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: Encapsulated construction with aluminum windings provides a compact, rugged power conversion module that resists moisture, dust, and temperature swings. Business Impact: enhanced reliability, lower maintenance costs, and longer service life in demanding industrial environments. Application: control panels, machine enclosures, and automation cabinets in manufacturing and packaging lines. Feature: 3 kVA single-phase rating with primary 240/480 V and secondary 120/240 V supports standard automation loads from PLCs to small motors. Business Impact: reduces the need for multiple transformers, simplifying spare-part inventories and installation planning. Application: power feeds for automation equipment in automotive, food & beverage, and plastics facilities. Feature: Indoor-outdoor NEMA 3R enclosure with Grade 304 stainless steel, epoxy encapsulation, and indoor-outdoor weather resilience. Business Impact: protection against corrosion and environmental exposure, enabling outdoor siting and year-round operation. Application: outdoor switchgear houses, loading bays, and equipment rooms exposed to dust or humidity. Feature: Fixed taps with no external tap changer simplifies wiring and minimizes mis-wiring risk. Business Impact: faster commissioning and fewer field adjustment errors. Application: deployments with stable supply voltages where 240/480 V to 120/240 V conversion is constant. Feature: Lightweight, compact footprint (frame 176, 8 in length, 7.69 in width, 14.25 in height) and 64 lb weight. Business Impact: easier installation in tight panels, reduced shipping costs, and improved serviceability. Application: retrofits and new builds where space is at a premium in control rooms and machinery housings. Feature: UL Listed certification and credible warranty support (one year from installation or 18 months from shipment). Business Impact: regulatory confidence and predictable maintenance budgeting. Application: procurement for safe, compliant automation projects and long-term ROI.
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FAQs
Yes. It is designed for panel mounting in control cabinets and fits within a compact footprint (8 in L x 7.69 in W x 14.25 in H). It uses a 3A wiring connection, has no taps, and uses a 240/480 V primary with a 120/240 V secondary at 60 Hz. It is UL Listed with a NEMA 3R enclosure for indoor-outdoor use.
The transformer is single-phase at 60 Hz with a 3 kVA VA rating. Primary voltages are 240 V or 480 V, secondary voltages are 120 V or 240 V. Aluminum windings and encapsulated construction support reliable power delivery for PLCs, relays, and small motors in automation environments.
Yes. It is designed for general-purpose control panels and automation cabinets, offering a compact footprint, a robust NEMA 3R enclosure for indoor-outdoor use, and a 3 kVA rating that covers a wide range of automation loads found in manufacturing lines, packaging facilities, and machine controls.
It carries UL Listed safety certification and a NEMA 3R enclosure, meaning it is approved for safe operation in both indoor and outdoor environments. This supports regulatory compliance for industrial installations and helps simplify procurement and site inspections.
Warranty terms are one year from installation or eighteen months from shipment, whichever occurs first. This, combined with durable epoxy encapsulation and corrosion-resistant enclosure, reduces maintenance costs and downtime, contributing to a lower total cost of ownership over the transformer’s service life.