Eaton S20N11E15CU General-Purpose Transformer - UL Listed
Part Number: S20N11E15CU
Quick Summary
The Eaton S20N11E15CU transformer provides reliable step-down from 240/480V to 120/240V for industrial distribution. Engineers often struggle with voltage stability and environmental exposure, leading to downtime and spare-part costs. This unit’s UL Listed and CSA Certified ratings, combined with 60 Hz operation and a rugged NEMA 3R enclosure, help ensure compliance and reliability. By supporting a 15 kVA capacity with copper windings and electrostatic shielding, it reduces energy waste and simplifies maintenance while enabling scalable power distribution. Designed for indoor-outdoor use, it's compatible with 60 Hz systems and supports easy site integration. The combination of rugged enclosure (NEMA 3R) and shielded copper windings supports long service life in challenging electrical environments.
Product Information
Extended Description
S20N11E15CU Eaton: Eaton, general purpose encapsulated transformer, ep, single-phase, primary voltage: 240 x 480v, taps: none, secondary voltage: 120/240v, 115°c, 15 kva, copper windings, fr180, 90a, indoor-outdoor, electrostatically shielded, 60 hz, nema 3r
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11E15CU
UPC
786680104015
Product Length/Depth
10.52 in
Product Height
19 in
Product Width
13.38 in
Product Weight
231 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 CSA Certified
Coil material
Copper
Design
EP
Enclosure
NEMA 3R
Frame
180
Tap size
None
Type
General-purpose encapsulated transformer
Wiring connection
90A
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
15 kVA
Special features
Electrostatically shielded
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S20N11E15CU
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: encapsulated, general-purpose design with copper windings and electrostatic shielding. This construction minimizes EMI, improves thermal performance, and boosts long-term reliability in dense cabinets. The rugged enclosure meets NEMA 3R, enabling indoor-outdoor installation in varied environments. With outdoor-capable protection, sites avoid extra weatherproofing costs and field modifications. Electrostatic shielding reduces interference with nearby automation sensors and controllers. This combination translates into lower maintenance costs and fewer field failures over time. Feature: 15 kVA rating with 240/480 V primary and 120/240 V secondary. This rating supports multiple loads from PLCs to drives within a single transformer footprint. Application: well suited to machine controls and panel boards requiring stable, conditioned power. Copper windings deliver high conductivity and resilience under peak startup currents. The 115 °C rise specification helps predict operating temperatures in hot manufacturing environments.
Get a Quick Quote for a Eaton S20N11E15CU
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton S20N11E15CU?
Enquire Now
FAQs
To install the S20N11E15CU, mount the transformer on a solid, level surface inside its NEMA 3R enclosure suitable for indoor-outdoor use. Connect the primary to 240–480 V and the secondary to 120/240 V circuits using appropriate lugs and protection per your code. There are no taps and a 90 A wiring connection requires properly sized conductors. Maintain the electrostatic shielding during wiring to minimize EMI and ensure reliable operation.
The transformer delivers 15 kVA with a 240/480 V primary and a 120/240 V secondary, operating at 60 Hz in a single-phase configuration. It uses copper windings and exhibits a 115 °C rise, with a 180 frame and a 90 A wiring connection. These specifications support robust performance under peak loads while maintaining acceptable operating temperatures in typical plant environments.
Yes. The S20N11E15CU features a rugged NEMA 3R enclosure designed for indoor-outdoor use, so it can be installed in exposed or semi-exposed locations without additional weatherproofing. Its copper windings and electrostatic shielding further enhance durability and EMI performance, making it a reliable choice for outdoor panels, protected outdoor equipment, and challenging industrial spaces.
The unit is UL Listed and CSA Certified, signaling compliance with safety and performance standards recognized in North America. These certifications simplify procurement, reduce regulatory risk, and support audits and maintenance planning in regulated facilities. Certification visibility is especially valuable for controlled environments, panel builders, and operators requiring traceable compliance.
Eaton’s policy for this transformer offers one year from installation or 18 months from shipment, whichever occurs first. This warranty provides a defined maintenance window and helps with budgeting for service and parts. Coupled with its rugged build, copper windings, and EMI shielding, the S20N11E15CU supports predictable total cost of ownership and reduced unexpected downtime.