Eaton S20P11S25N General transformer - UL Listed
Part Number: S20P11S25N
Quick Summary
Eaton S20P11S25N is a general purpose encapsulated transformer that converts 240/480V to 120/240V for electrical distribution. Maintaining reliability in tight industrial spaces and protecting components from dust and moisture is a common challenge. UL Listed certification and a NEMA 3R enclosure enable reliable indoor-outdoor service in harsh environments. This 25 kVA single-phase unit with aluminum windings supports compact control panels while reducing total cost of ownership. Engineers will appreciate the 60 Hz performance and 25 kVA rating when planning downstream power supplies for machines, conveyors, and automation cabinets. Designed for straightforward installation with wall mounting and 1A wiring connection, it minimizes downtime during upgrades. For integrators, the included taps at +5%, -5%, +2.5%, and -2.5% provide flexible voltage matching across loads.
Product Information
Extended Description
S20P11S25N Eaton: General-Purpose Encapsulated Transformer, EP, Single-phase, PV: 240 X 480V, Taps: 1 at +5%, 2 at -5% X2 at +2.5%, 4 at -2.5%, SV: 120/240V, 115°C, 25 kVA, Al windings, Frame: 182, Indoor-Outdoor
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20P11S25N
UPC
786680221156
Product Length/Depth
14.12 in
Product Height
18.06 in
Product Width
16.35 in
Product Weight
391 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
Catalog Notes
Model N
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
182
Insulation
180 °C
Mounting
Wall
Tap size
1 at +5%, 2 at -5% x 2 at +2.5%, 4 at -2.5%
Type
General-Purpose Encapsulated Transformer
Wiring connection
3A
Frequency rating
60 Hz
Kva Rating
25 kVA
kVA
25 kVA
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Sound Level
NEMA ST-20
Temperature rise
115 °C rise
Volt ampere rating
25 kVA
Weathershield
Indoor-Outdoor
Encapsulated EP construction provides a rugged protective envelope that shields windings from dust and moisture, boosting reliability in variable environments. This design reduces maintenance needs and extends service life in automation cabinets and distribution panels. Voltage versatility and taps enable precise matching to load conditions. With primary options of 240 V and 480 V and a 120/240 V secondary, plus taps at +5%, -5%, +2.5%, and -2.5%, engineers can fine-tune output without additional hardware, saving installation time and parts cost. Efficiency and performance deliver measurable business value. A 25 kVA rating with aluminum windings provides low copper losses and good surge tolerance, while 60 Hz operation suits common plant power. Insulation rated to 180 °C supports long life in demanding environments. Physical design and installation advantages streamline deployment. Frame 182, a compact footprint, and wall mounting ease integration into tight panels; a 3A wiring connection simplifies field wiring. The NEMA 3R enclosure supports indoor-outdoor use, reducing the need for separate housings. Durability, certification, and service support improve risk management. UL Listed certification confirms safety and quality; the indoor-outdoor weather shield and a standard warranty provide lifecycle assurance for automation operations.
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FAQs
Install the Eaton S20P11S25N by mounting the unit on a stable wall surface using its 182 frame and NEMA 3R enclosure for indoor-outdoor service. Connect the primary to the 240/480 V supply with the 3A wiring connection as appropriate, then tie the secondary to 120/240 V loads. Use the listed taps (+5%, -5%, +2.5%, -2.5%) to fine-tune voltages and ensure proper spare clearance.
The S20P11S25N is a 25 kVA single-phase transformer with dual primary voltages of 240 V and 480 V and a 120/240 V secondary. It operates at 60 Hz and uses aluminum windings with a 180 °C insulation rating. Its NEMA 3R enclosure supports indoor-outdoor service, frame 182, and a 25 kVA VA rating ensures adequate load capacity.
Yes. The S20P11S25N uses a NEMA 3R enclosure and Indoor-Outdoor capability, making it suitable for both controlled plant spaces and exterior installations. UL Listed enhances safety and reliability, and the rugged design shields windings from dust and moisture while simplifying field service in automation cabinets and equipment rooms.
The transformer carries UL Listed certification and is rated for indoor-outdoor use in a wide range of environments. Eaton's warranty policy 25-000 provides one year from installation or eighteen months from shipment, whichever occurs first. The unit is designed with aluminum windings, 180 °C insulation, and a 60 Hz rating, ensuring compliance and predictable life-cycle performance.
Installing the S20P11S25N reduces energy losses thanks to efficient aluminum windings and optimized core design, contributing to a quick ROI over its service life. The encapsulated, sealed design minimizes routine maintenance and protects connections from dust and moisture, lowering downtime. UL Listed and NEMA 3R certification simplify commissioning and compliance in automation applications.