Eaton S20K11E07CU Transformer - UL Listed, 7.5 kVA
Part Number: S20K11E07CU
Quick Summary
Eaton S20K11E07CU general-purpose encapsulated transformer provides reliable power isolation for control panels and industrial equipment. Engineers often confront moisture exposure, space constraints, and wiring complexity that complicate installation and uptime. UL Listed and a NEMA 3R enclosure design deliver critical protection against weather and contaminants, helping you meet regulatory and safety requirements. This transformer’s copper windings and epoxy encapsulation support long-term stability in harsh environments. By integrating this unit, maintenance cycles are extended and energy losses are minimized, reducing total cost of ownership. In addition to standard 60 Hz operation, the compact 7.5 kVA rating suits medium-load applications while compatible primary and secondary voltages ease panel design and future expansion.
Product Information
Extended Description
S20K11E07CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 178, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, 1 at -10% FCBN X 2 at -5% FCBN, 115 °C rise, 7.5 KVA, indoor-outdoor, 21A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20K11E07CU
UPC
786680065064
Product Length/Depth
9.89 in
Product Height
16 in
Product Width
10.38 in
Product Weight
139 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
178
Tap size
1 at -10% FCBN x 2 at -5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
21A
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
7.5 kVA
Special features
Electrostatically shielded
Weathershield
Indoor-Outdoor
Feature: Copper windings and epoxy encapsulation provide robust electrical isolation and improved resistance to vibration and moisture. Business Impact: Longer service life with reduced maintenance intervals, lowering total cost of ownership. Application: Control panels and automation cabinets in challenging environments. Feature: EP encapsulation with electrostatic shielding enhances EMI performance. Business Impact: Cleaner signals, reduced interference, and safer equipment operation. Application: Industrial automation systems with dense cabling. Feature: NEMA 3R enclosure and weathershield design enable indoor-outdoor deployment. Business Impact: Versatile installation across climate zones without weatherproofing accessories. Application: Outdoor-rated or mixed-indoor/outdoor control gear. Feature: Tap settings 1 at -10% FCBN x 2 at -5% FCBN for voltage flexibility. Business Impact: Fast voltage regulation to align with panel loads and supply variations. Application: Machinery and process controls needing minor voltage trims. Feature: 7.5 kVA rating with 240/480 V primary and 120/240 V secondary. Business Impact: Adequate power for medium-load control circuits with compatibility to standard industrial voltages. Application: Machine tools, conveyors, and PLC-powered subsystems. Feature: Copper coil material and UL Listed certification support compliance and reliability. Business Impact: Meets safety standards and quality expectations for regulated environments. Application: Any compliant electrical installation requiring traceable components.
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FAQs
For installation, consider the unit’s indoor-outdoor readiness (NEMA 3R), footprint (9.89 in D, 16 in H, 10.38 in W), and weight (139 lb). Plan for secure mounting, adequate clearance for cooling, and accessible wiring connections rated 21A. The enclosure supports robust protection in variable environments, enabling safer, longer-lived installations.
The S20K11E07CU is a single-phase transformer rated at 7.5 kVA, operating at 60 Hz. It features primary voltages of 240 V and 480 V, with secondary outputs of 120/240 V, and a temperature rise of 115 °C, suitable for general-purpose power conversion in control panels.
Yes. It uses an NEMA 3R enclosure with weathershield capable of indoor-outdoor service, making it appropriate for environments where exposure to moisture or varying temperatures is a concern, while maintaining reliable electrical isolation.
This transformer is UL Listed, providing a recognized safety certification for commercial and industrial use. Warranty is Eaton’s policy: one year from installation or eighteen months from shipment, whichever occurs first, offering protection against manufacturing defects.
The unit uses copper windings, EP encapsulation, and a 178 frame with standard 240/480 V to 120/240 V windings, plus tap settings for voltage adjustment. Its electrostatically shielded design reduces EMI, and the UL listing simplifies compliance and sourcing within Eaton’s power-distribution ecosystem.