Eaton S20K11S15CU General Encapsulated Transformer - 60 Hz
Part Number: S20K11S15CU
Quick Summary
The Eaton S20K11S15CU general encapsulated transformer provides reliable voltage conversion for control panels and industrial equipment. Engineers often wrestle with compact, rugged devices that withstand variable environments and require minimal maintenance. Common industry certifications for encapsulated transformers include CE and IP ratings; verify exact credentials with Eaton. This model’s copper windings, 15 kVA rating, and indoor-outdoor enclosure support dependable operation in tight spaces and harsh environments, while 60 Hz single-phase power aligns with typical factory feeders. By combining efficient performance with straightforward installation and Eaton’s warranty, this transformer delivers measurable business value for panel builders and machinery OEMs seeking uptime and cost control.
Product Information
Extended Description
S20K11S15CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, 180, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, 1 at -10% FCBN x 2 at -5% FCBN, 115 °C rise, 15 KVA, indoor-outdoor, 9A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20K11S15CU
UPC
786680112454
Product Length/Depth
10.52 in
Product Height
19 in
Product Width
13.38 in
Product Weight
230 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
Contact Manufacturer
Coil material
Copper
Design
EP
Frame
180
Tap size
1 at -10% FCBN x 2 at -5% FCBN
Type
General-purpose encapsulated transformer
Wiring connection
9A
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
Weathershield
Indoor-Outdoor
Feature → Business Impact → Application: 15 kVA, 60 Hz, single-phase design delivers robust voltage conversion for mid-size control panels, enabling consistent equipment performance and reducing downtime in manufacturing lines. Application: ideal for machine tools and process equipment where stable output under fluctuating loads is critical. Feature → Copper windings with 115 °C rise → Reliability and thermal headroom; improved efficiency and longer service life in demanding environments. Application: heavy-duty automation systems requiring durable metallurgy and steady thermal performance. Feature → Tap changer with 1 at -10% FCBN and 2 at -5% FCBN → Quick voltage adjustment to compensate for supply variations; reduces panel rework and saves commissioning time. Application: fielded installations with varying feeder voltages. Feature → Weathershield Indoor-Outdoor EP design → Environmental tolerance and enclosure versatility; supports indoor and outdoor installations without additional housings. Application: outdoor switchgear rooms and exposed factory corners. Feature → Primary 240/480 V and secondary 120/240 V → Flexible integration with common distribution schemes; simplifies wiring diagrams and reduces part counts. Application: generic PDUs, MCCs, and equipment racks. Feature → 230 lb weight and compact footprint (10.52 in D × 13.38 in W × 19 in H) → Space planning clarity and easier installation with standard lifting equipment. Application: retrofit projects and new panel builds with tight footprint constraints. These features collectively address common objections about space, maintenance, and adaptability while ensuring installation compatibility with existing Eaton and customer-specific architectures.
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FAQs
The unit measures 10.52 in deep, 13.38 in wide, and 19 in tall, with a weight of 230 lb, designed for indoor-outdoor use. Plan for adequate mounting clearance, vibration control, and access to taps (-10% and -5% FCBN) for field voltage adjustments. Ensure the enclosure remains protected from weather and dust ingress if installed outdoors.
This transformer delivers 15 kVA with a single-phase, 60 Hz rating, and a primary voltage of 240/480 V to the secondary 120/240 V. Copper windings provide efficient energy transfer and thermal performance, while the EP enclosure supports rugged service in demanding environments typical of panel builds and equipment racks.
Yes. The S20K11S15CU offers a tap arrangement of 1 at -10% FCBN and 2 at -5% FCBN. These taps allow fine voltage correction to compensate for feeder variations, long cable runs, or voltage drop at startup, reducing the need for additional downstream regulation.
Eaton provides a one-year warranty from installation or eighteen months from shipment, whichever occurs first. For maintenance, follow standard transformer upkeep: inspect for enclosure integrity, verify tap positions during commissioning, monitor winding temperatures, and schedule periodic insulation resistance tests as part of your preventive program.
Certifications for encapsulated transformers like this model are typically required by your site and region. This product lists Certifications as Contact Manufacturer, so confirm with Eaton for CE, IP ratings, or SIL-related credentials specific to your installation. Ensure the unit’s indoor-outdoor capability matches your environmental and regulatory requirements.