Eaton S20P11E10CU General-Purpose Transformer - UL Listed
Part Number: S20P11E10CU
Quick Summary
Eaton S20P11E10CU is a general‑purpose encapsulated transformer used to power control panels in industrial and commercial settings. This unit addresses downtime and reliability concerns by combining a rugged NEMA 3R enclosure with copper windings and electrostatic shielding for harsh environments. UL Listed certification and indoor-outdoor suitability support compliant, versatile installations across varied facilities. With a 10 kVA rating and 240/480 V primary feeding 120/240 V secondary at 60 Hz, it delivers scalable power for automation, while flexible tap options simplify voltage regulation, reducing field adjustments and inventory costs.
Product Information
Extended Description
S20P11E10CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 179, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, 1 at +5% FCAN, 2 at -5% FCBN X 2 at +2.5% FCAN, 4 at -2.5% FCBN, 115 °C rise, 10 KVA, indoor-outdoor, 121B
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20P11E10CU
UPC
786680061394
Product Length/Depth
10.52 in
Product Height
19 in
Product Width
13.38 in
Product Weight
212 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
179
Tap size
1 at +5% FCAN, 2 at -5% FCBN x 2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
121B
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
10 kVA
Special features
Electrostatically shielded
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S20P11E10CU
Selling Policy 25-000 - Distribution and Control Products and Services
Feature is encapsulated with copper windings (EP design) → Improves reliability and resistance to dust, moisture, and vibration, lowering maintenance costs and downtime in demanding environments; Application in control panels or motor starters in manufacturing lines. Feature 240/480 V primary and 120/240 V secondary → Enables seamless integration with diverse power distribution schemes and modular automation architectures, improving panel compatibility and reducing wiring complexity; Application in mixed-voltage facilities and retrofit projects. Feature 1 at +5% FCAN, 2 at -5% FCBN x 2 at +2.5% FCAN, 4 at -2.5% FCBN tap settings → Precise voltage compensation for long feeders and varying line conditions, enhancing performance and reducing nuisance trips; Application in critical load centers and motor control centers. Feature NEMA 3R enclosure with indoor-outdoor capability (Weathershield) → Facilitates installation in indoor equipment rooms or outdoor electrical alcoves, with enhanced environmental protection; Application in outdoor substations, exterior equipment enclosures, and harbors of plant floors. Feature Electrostatic shielding and 115 °C rise rating → Reduces capacitive coupling effects and supports safe operation under high-load transients; Application in sensitive automation systems and high-density control racks. Feature 10 kVA rating and 60 Hz single-phase operation → Aligns with standard industrial power needs for control panels and small drives, enabling scalable automation power; Application in panelboards, PLC power supplies, and peripheral distribution. Feature UL Listed and 1-year warranty per Eaton policy → Provides procurement confidence, regulatory compliance, and post-sale support; Application in capital projects and maintenance contracts.
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FAQs
The S20P11E10CU uses a 240/480 V primary and a 120/240 V secondary, designed for 60 Hz single-phase operation. This voltage arrangement supports flexible integration with common plant power systems and simplifies panel design for automation and control applications.
Yes. The transformer features a NEMA 3R enclosure with indoor-outdoor capability and electrostatic shielding, along with UL Listed certification. It is designed to withstand outdoor environments while maintaining electrical safety and performance in automated facilities.
The unit is built on a 179 frame with dimensions approximately 10.52 in (L) by 13.38 in (W) by 19 in (H) and weighs about 212 lb. This helps determine mounting requirements and space allocation in control rooms or equipment rooms.
Tap settings include 1 at +5% FCAN, 2 at -5% FCBN, and 2 at +2.5% FCAN with 4 at -2.5% FCBN. These allow precise voltage compensation to counteract line drop and load variation, improving regulation, reducing overheating, and minimizing nuisance trips in sensitive automation circuits.
The S20P11E10CU is UL Listed for safety compliance and ships with Eaton’s standard warranty policy, 25-000, offering a one-year coverage from installation or 18 months from shipment, whichever comes first. This combination supports procurement confidence and predictable maintenance planning.