Eaton S20N11S05N General-Purpose Transformer - UL Listed
Part Number: S20N11S05N
Quick Summary
The Eaton general purpose encapsulated transformer is a compact power converter designed for control panels and industrial equipment. It addresses common space constraints and environmental exposure by offering sealed encapsulation and a rugged NEMA 3R enclosure suitable for indoor-outdoor use. UL Listed certification and a robust 5 kVA rating provide reliability across demanding environments, while the 240/480 V primary and 120/240 V secondary output simplify sourcing and wiring. This model supports streamlined installation and long-term lifecycle value, with compatible aluminum windings and a compact form factor that fits tight panel spaces without sacrificing performance.
Product Information
Extended Description
S20N11S05N Eaton: Eaton, general purpose encapsulated transformer, ep, single-phase, pv: 240 x 480v, taps: none, sv: 120/240v, 115°c, 5 kva, al windings, frame: 177, indoor-outdoor
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11S05N
UPC
786680102974
Product Length/Depth
9.89 in
Product Height
16 in
Product Width
10.38 in
Product Weight
126 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
Model N
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
177
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
5 kVA
Weathershield
Indoor-Outdoor
Feature: General-purpose encapsulated design with EP insulation and NEMA 3R enclosure → Business Impact: Enhanced moisture resistance and storm resilience reduce field maintenance costs and downtime → Application: Outdoor-rated control cabinets and damp plant rooms. Feature: Single-phase 60 Hz operation with 5 kVA rating and dual primary/secondary voltages (240/480 V to 120/240 V) → Business Impact: Flexible power distribution minimizes inventory and accelerates panel design changes → Application: Light industrial controls and machine panels. Feature: Aluminum windings and 177 frame with a 9.89 in depth, 10.38 in width, and 16 in height → Business Impact: Lightweight yet durable construction improves install ease and reduces handling risk → Application: Retrofit projects and space-constrained installations. Feature: 3A wiring connection and no taps → Business Impact: Straightforward wiring reduces wiring errors and commissioning time → Application: Standardized factory and field installations. Feature: UL Listed certification and a 1-year warranty (policy 25-000) → Business Impact: Compliant procurement and predictable support costs → Application: Quality-assured deployments in regulated facilities.
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FAQs
Begin with the NEMA 3R enclosure rating in mind, ensuring the mounting surface is flat and vibration-free. Connect the 240/480 V primary to the correct input terminals and land the 120/240 V secondary to the intended loads. Maintain proper clearance for cooling and access for maintenance, and verify phase and wiring connections are correct. The 3A wiring configuration simplifies routing, while the encapsulated design protects against moisture and dust ingress in outdoor environments.
This transformer provides a 5 kVA, single-phase design at 60 Hz with dual primary voltages of 240 V and 480 V and a dual secondary of 120/240 V. It uses aluminum windings, features an indoor-outdoor NEMA 3R enclosure, and has a 16 in height, 10.38 in width, and 9.89 in depth footprint. The unit weighs approximately 126 lb and is UL Listed for compliance.
Yes. The S20N11S05N is designed for indoor-outdoor installations with an NEMA 3R enclosure and Weathershield capability described as Indoor-Outdoor. This combination provides reliable performance in varying temperatures and moisture conditions typical of industrial facilities, reducing the risk of corrosion or insulation degradation while maintaining consistent voltage transformation.
Eaton offers a one-year limited warranty from the date of installation or eighteen months from shipment, whichever occurs first, per policy 25-000. This provides protection against manufacturing defects and supports a straightforward maintenance cycle. For asset management, consider pairing the transformer with Eaton’s documentation and catalog resources for quick service and part availability.
Encapsulation isolates windings from moisture, dust, and mechanical stress, reducing insulation failures and extending service life. The rugged aluminum windings, 5 kVA rating, and UL Listed certification contribute to reliable, regulated operation with predictable maintenance costs. In practical terms, this translates to higher line uptime, simpler compliance audits, and lower total cost of ownership in panel-heavy environments.