Eaton S20L11S07CU Encapsulated Transformer - UL Listed
Part Number: S20L11S07CU
Quick Summary
Eaton S20L11S07CU is a general-purpose encapsulated transformer for control panels and industrial machinery. Mismatched voltages, insulation failures, or exposure to the shop floor can cause downtime and costly rework. UL Listed safety certification and a rugged NEMA 3R enclosure support reliable operation in indoor and outdoor environments. With dual primary voltages and a 7.5 kVA rating, it helps standardize power delivery across equipment while reducing stocking needs. This combination delivers consistent power to control panels, automation equipment, and distribution feeders, boosting uptime and asset utilization. Its copper windings and 60 Hz single-phase design optimize efficiency and thermal performance in typical facility conditions. In practice, engineers value the compact footprint and straightforward installation for fast commissioning.
Product Information
Extended Description
S20L11S07CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 178, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, 2 at -5% FCBN X 4 at -2.5% FCBN, 115 °C rise, 7.5 KVA, indoor-outdoor, 23A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20L11S07CU
UPC
786680087950
Product Length/Depth
9.89 in
Product Height
16 in
Product Width
10.38 in
Product Weight
148 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
2 at -5% FCBN x 4 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
23A
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
Weathershield
Indoor-Outdoor
Encapsulated EP construction provides robust insulation and moisture resistance, reducing field failures in dusty or damp environments and lowering maintenance costs. Copper windings deliver superior conductivity and thermal performance, improving efficiency and helping meet energy targets in automation installations. The transformer supports dual primary voltages of 240 V and 480 V with a 120/240 V secondary, enabling a single solution across machines with different supply configurations and simplifying procurement. A 7.5 kVA rating at 60 Hz (single-phase) provides ample headroom for control circuits while maintaining a compact footprint, easing installation in MCCs and control cabinets. NEMA 3R indoor-outdoor enclosures and a UL Listed certification give rugged reliability for factory floors and outdoor enclosures, enhancing uptime. The 178 frame with 9.89 in length, 10.38 in width, and 16 in height supports straightforward mounting and field wiring with a 23A connection, reducing commissioning time and potential wiring errors. With 2 taps at -5% and 4 taps at -2.5% FCBN, installers gain flexibility to fine-tune voltage delivery under varying load conditions, improving performance consistency in demanding environments.
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FAQs
The S20L11S07CU supports 240 V and 480 V primary voltages with a 120/240 V secondary. It operates at 60 Hz and is rated at 7.5 kVA in a single-phase configuration. Tap options include 2 at -5% FCBN and 4 at -2.5% FCBN, allowing voltage adjustments to match system loading and maintain stable output to control circuits.
This transformer uses a NEMA 3R enclosure designed for indoor-outdoor service and weather exposure. It is UL Listed for safety and compatibility with industrial environments. The combination yields reliable performance on factory floors and in outdoor installations, reducing the need for separate weatherproof housings and simplifying procurement for mixed-site deployments.
Installation centers on a copper-wound, epoxy-encapsulated design with a 178 frame and dimensions of 9.89 in L, 10.38 in W, and 16 in H. Wiring connection is 23A, supporting straightforward field wiring. Mounting clearance, proper mounting surface, and correct line-side connections for 240/480 V inputs ensure safe commissioning and predictable performance.
Yes. The S20L11S07CU carries UL Listing, indicating compliance with recognized safety standards for electrical equipment. It is configured for industrial use with a rugged NEMA 3R enclosure suitable for indoor-outdoor applications. This certification, along with Eaton’s warranty and performance specs, supports procurement decisions for compliant, reliable power transformation in control panels.
The copper windings and encapsulated design improve thermal efficiency and reduce insulation failures, lowering maintenance costs and downtime. A compact footprint simplifies installation and spares panel space, contributing to lower total cost of ownership. Warranty terms (one year from installation or 18 months from shipment) provide reassurance while minimizing long-term support expenses.