Eaton S48J11S25CU Encapsulated Transformer - UL Listed
Part Number: S48J11S25CU
Quick Summary
Eaton S48J11S25CU general purpose encapsulated transformer delivers reliable power conversion for panel boards and factory automation. When panel space is tight and environments vary, engineers contend with enclosure protection, thermal performance, and wiring access. CSA Certified and UL Listed, with a NEMA 3R indoor-outdoor enclosure, support safe, compliant operation in varied settings. This 25 kVA, single-phase transformer pairs copper windings with robust taps and a compact footprint to deliver scalable power distribution for modern manufacturing and industrial control. The design helps reduce downtime and maintenance while enabling easier upgrades and expansion for evolving automation landscapes.
Product Information
Extended Description
S48J11S25CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 182, 60 Hz, single-phase, 480 V, 120/240 V, 4 at -2.5% FCBN, 115 °C rise, 25 KVA, indoor-outdoor, 527B
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S48J11S25CU
UPC
786680104091
Product Length/Depth
14.12 in
Product Height
23.31 in
Product Width
16.35 in
Product Weight
415 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
CSA Certified UL Listed
Coil material
Copper
Design
EP
Enclosure
NEMA 3R
Frame
182
Tap size
4 at -2.5% FCBN
Type
General-purpose encapsulated transformer
Wiring connection
527B
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
480 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
25 kVA
Weathershield
Indoor-Outdoor
The 25 kVA rating with a 480 V primary and 120/240 V secondary delivers precise voltage transformation for panel boards and factory controls. Copper windings reduce losses and improve efficiency, while the -2.5% tap settings enable voltage adjustments to match load conditions. This combination supports stable operation for motors and drives in demanding automation applications. NEMA 3R enclosure provides indoor-outdoor protection, reducing field wiring exposure and maintenance while enabling exterior installations in service bays or outdoor equipment. The indoor-outdoor design paired with WeatherShield translates to longer service intervals and fewer weather-related faults, suitable for outdoor equipment, vending, or unmanned installations. Compact dimensions (14.12 in L × 16.35 in W × 23.31 in H) and a 415 lb weight define a durable, space-efficient footprint that fits standard electrical rooms and still accommodates a robust 182 frame and 527B wiring connection for straightforward terminations. Compliance from CSA and UL underpins safe operation, and Eaton’s 25-000 warranty (one year from installation or 18 months from shipment) minimizes lifecycle risk while delivering predictable maintenance planning. This transformer’s rugged construction reduces downtime, supports OEM replacement programs, and delivers dependable performance in continuous industrial service.
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FAQs
Begin by confirming available panel space that accommodates the transformer footprint (14.12 in L x 16.35 in W x 23.31 in H) and weight (approximately 415 lb). Use proper hoisting and mounting hardware for a level installation, then connect primary 480 V to the 527B terminal arrangement and terminate the 120/240 V secondary as required. Verify clearance for cooling and wiring routing and follow the included schematics for safe operation.
Key specs include a 25 kVA rating, single-phase operation at 60 Hz, primary voltage 480 V, secondary voltage 120/240 V, copper coil construction, and four taps at -2.5% FCBN for voltage adjustment. The unit features a 115 °C rise and is designed for indoor-outdoor service with a NEMA 3R enclosure, supporting reliable performance in varied environments.
Yes. The transformer uses a NEMA 3R enclosure with indoor-outdoor suitability and WeatherShield capabilities, making it appropriate for outdoor equipment and semi-exposed installations. Ensure proper mounting, ventilation, and protection from direct weather when selecting outdoor sites, and verify compliance with local electrical codes for outdoor power distribution.
The S48J11S25CU is CSA Certified and UL Listed, confirming compliance with recognized safety and performance standards. These certifications are often required by electrical codes and spec sheets for panel builds and industrial facilities, reducing installation risk and supporting regulatory acceptance in manufacturer, OEM, and end-user projects.
Rely on Eaton’s standard warranty (25-000): one year from installation or 18 months from shipment, whichever comes first. Copper windings and a rugged NEMA 3R enclosure support long service life with lower maintenance needs. Regular inspection of enclosure seals, wiring terminations, and cooling pathways helps sustain performance and minimize unplanned downtime.