Eaton S20P11S10 Transformer - 10 kVA UL Listed
Part Number: S20P11S10
Quick Summary
Eaton S20P11S10 transformer provides compact power conversion for industrial control panels and automation equipment in harsh factory environments. Many engineers face moisture exposure and installation constraints; the encapsulated EP design and NEMA 3R enclosure mitigate moisture ingress, corrosion, and field-service complexity, enabling reliable outdoor or indoor mounting. This unit carries UL Listed certification and is designed for 60 Hz single-phase operation with a 10 kVA rating and 240/480 V primary feeding 120/240 V secondary, supporting flexible distribution. Aluminum windings and multiple tap options enhance voltage regulation, reducing downtime and energy waste. For integrators and OEMs, the S20P11S10 delivers dependable performance in industrial power management and distribution applications, while supporting efficient panel layouts and serviceability across environments.
Product Information
Extended Description
S20P11S10 Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, 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, 121A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20P11S10
UPC
786680053627
Product Length/Depth
10.52 in
Product Height
19 in
Product Width
13.38 in
Product Weight
196 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
Aluminum
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
121A
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
Weathershield
Indoor-Outdoor
Feature → Business Impact → Application: General-purpose encapsulated design provides rugged reliability in both indoor and outdoor installations, reducing moisture-related failures and extending service life in harsh environments, ideal for control panels and distribution boards in manufacturing lines. Feature → Application of 60 Hz single-phase operation with 10 kVA rating enables standard voltage conversion for machine automation and panel boards, delivering predictable loads and simplifying system design. Feature → Aluminum coil material lowers copper costs and improves thermal performance, boosting efficiency and lowering running temperatures in compact installations such as space-constrained control cabinets. Feature → Multiple tap options (+5%, -5% and +2.5%, -2.5% with 2 x -5% settings) provide voltage regulation to compensate for supply fluctuations, enhancing motor start-up and control stability in mixed-grid environments. Feature → NEMA 3R enclosure supports indoor-outdoor service, protecting windings from precpitation and dust, enabling outdoor sub-panel or outdoor-control-hatch installations with minimal additional protection. Feature → 240/480 V primary and 120/240 V secondary voltages align with common industrial distribution schemes, simplifying panel integration and reducing wiring errors in automation systems. Feature → UL Listed certification confirms compliance with safety standards, supporting procurement and end-user audits, while the built-in warranty and Eaton support ecosystem reduce maintenance risk and downtime.
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FAQs
The S20P11S10 is a single-phase, 60 Hz unit rated at 10 kVA with a NEMA 3R enclosure suitable for indoor-outdoor installation. It weighs about 196 lb and measures 19 in high by 13.38 in wide and 10.52 in deep, making it feasible for upright panel mounting or enclosure integration in both controlled rooms and exposed outdoor areas.
This transformer provides multiple tap settings: 1 at +5% FCAN, 2 at -5% FCBN, and 2 at +2.5% FCAN with 4 at -2.5% FCBN. These taps allow fine-tuning of voltage to compensate supply variations, improving motor performance, reducing heat, and ensuring reliable operation of sensitive automation equipment.
Best suited for industrial control panels, machine rooms, and outdoor substations, the S20P11S10 supports 240/480 V primary and 120/240 V secondary, simplified wiring, and robust weather resistance. It helps power lighting, controls, and small drives while maintaining voltage accuracy and system stability in automation environments.
The unit is UL Listed, has a NEMA 3R enclosure for indoor-outdoor service, and uses aluminum windings designed for durability. While the data specifies UL Listing and NEMA 3R, it is prudent to verify any additional regional certifications (CE, IP ratings) required for your facility’s compliance program.
Maintenance is typically minimal due to encapsulated winding design and rugged enclosure. The aluminum windings reduce weight and thermal losses, contributing to longer service life and lower energy waste. The 10 kVA rating supports scalable power distribution, which can lower downtime and improve overall equipment effectiveness (OEE) in automated lines.