Eaton S20N11P26P General-Purpose Encapsulated Transformer - UL Listed
Part Number: S20N11P26P
Quick Summary
Eaton S20N11P26P General-Purpose Encapsulated Transformer provides clean, reliable power for control panels and automation equipment. Many engineers struggle with compact transformers that overheat or fail in harsh environments; this unit addresses that by combining a rugged enclosure with efficient copper windings. Key certifications include UL Listed and a NEMA 3R enclosure for indoor-outdoor service, plus a design tuned for 60 Hz systems. By pairing a 0.25 kVA rating with a compact 57P frame, it simplifies installation and reduces total cost of ownership in industrial power distribution. Its rugged construction supports reliable operation in control panels, switchgear, and equipment rooms, delivering predictable performance across diverse industrial applications.
Product Information
Extended Description
S20N11P26P Eaton: Eaton General-Purpose Encapsulated Transformer, EP, Single-phase, PV: 240 X 480V, Taps: None, SV: 120/240V, 115°C, .250 kVA, Copper windings, Frame: 57P, Indoor-Outdoor
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11P26P
UPC
786680233869
Product Length/Depth
5.18 in
Product Height
9.34 in
Product Width
4.45 in
Product Weight
13 lb
Compliances
Not Applicable
Certifications
UL Listed
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
57P
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
0.25 kVA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S20N11P26P
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: General-purpose encapsulated transformer construction reduces exposure to dust and moisture while minimizing vibration. Business Impact: Enhanced reliability and longer service life translate to lower maintenance costs and reduced downtime in critical automation systems. Application: Ideal for indoor-outdoor control panels and machinery in manufacturing lines. Feature: 0.25 kVA rating with 240/480 V primary and 120/240 V secondary in a single-phase design at 60 Hz. Business Impact: Simplifies wiring schemes, reduces part count, and supports common control voltages, improving installation speed and compatibility with existing cabinets. Application: Control panels, machine controls, and power distribution sections requiring compact power conversion.Feature: NEMA 3R enclosure and WeatherShield indoor-outdoor capability. Business Impact: Enables outdoor or harsh-environment deployments without additional enclosure costs, lowering total installed cost and facilitating outdoor equipment siting. Application: Outdoor weather exposure environments such as warehouses, loading docks, and exterior control rooms.Feature: Copper windings with aluminum coil construction and a 115°C rise rating. Business Impact: Improved efficiency, heat management, and durability under load transients, delivering stable output and longer life in demanding cycles. Application: Industrial automation and equipment integration where reliable voltage transformation is critical.Feature: Compact 57P frame with 9.34 in height, 4.45 in width, and 5.18 in depth; 13 lb weight with 3A wiring. Business Impact: Easy retrofit into existing boards and panels with minimal mounting footprint, reducing installation time and space requirements. Application: Cabinet retrofits, panel updates, and new machine builds where space is at a premium.Feature: UL Listed certification and documented compatibility with indoor-outdoor service. Business Impact: Compliance assurance supports procurement and reduces qualification risk for regulated environments. Application: Panel assemblies, switchgear, and distributed control systems requiring traceable certification.
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FAQs
Yes. The transformer features a NEMA 3R enclosure and weather-resistance capabilities, making it appropriate for indoor-outdoor installations. Ensure proper clearance, mounting within its 57P frame, and adherence to 3A wiring guidelines for reliable outdoor operation.
The device provides 0.25 kVA with a primary of 240/480 V and a secondary of 120/240 V, operating at 60 Hz in a single-phase configuration. Copper windings with aluminum coil construction support efficient, stable voltage transformation under load.
Ideal for control panels, switchgear, and automation equipment in manufacturing environments. Its compact 57P frame helps fit tight cabinet spaces, while the 0.25 kVA rating covers typical control circuitry and interconnects without overloading the panel.
The unit is UL Listed and designed with a weather-resistant NEMA 3R enclosure for indoor-outdoor service. This combination supports regulatory compliance and dependable performance in varied environments.
The compact footprint, lightweight 13 lb weight, and 3A wiring make retrofits and new installs straightforward, reducing installation time and panel space requirements. Encapsulation and copper windings contribute to lower maintenance needs and improved long-term reliability.