Eaton S48D12S03CUSS General-Purpose Transformer - UL Listed
Part Number: S48D12S03CUSS
Quick Summary
An Eaton general-purpose encapsulated transformer steps 480 V to 120 V for control panels. Facilities face outdoor exposure and space constraints; this model’s NEMA 3R enclosure and compact footprint ease outdoor installs and cabinet planning. UL Listed with a NEMA 3R enclosure and Grade 304 stainless steel construction meet harsh environment standards. With 3 kVA capacity, copper windings, and 60 Hz operation, it delivers reliable power for automation. This transformer supports efficient, compliant power delivery for industrial control panels and machine interfaces. Installation and service are streamlined by standard taps and Eaton's warranty, reducing downtime and lifecycle costs overall significantly.
Product Information
Extended Description
S48D12S03CUSS Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 176, 60 Hz, single-phase, 480 V, 120 V, 2 at +2.5% FCAN, 2 at -2.5% FCBN, 115 °C rise, 3 KVA, indoor-outdoor, 579A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S48D12S03CUSS
UPC
786685183855
Product Length/Depth
8 in
Product Height
14.25 in
Product Width
7.69 in
Product Weight
66 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
Grade 304 stainless steel enclosure
Coil material
Copper
Design
EP
Enclosure
NEMA 3R
Frame
176
Tap size
2 at +2.5% FCAN, 2 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
579A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
480 V
Secondary Voltage
120 V
Temperature rise
115 °C rise
Volt ampere rating
3 kVA
Weathershield
Indoor-Outdoor
Feature: Copper windings with encapsulated construction shield the windings from dust and moisture, improving insulation and long-term reliability. Business Impact: Reduced maintenance, lower nuisance trips, and extended service life translate to lower operating costs in control rooms and industrial enclosures. Application: Ideal for control panels and automation cabinets in dusty or humid manufacturing environments. Feature: 3 kVA rating with 480 V primary and 120 V secondary provides precise control power for relays, PLCs, and sensors. Business Impact: Ensures stable voltage to critical devices, reducing misreads and downtime. Application: Suitable for machine tools and panel boards in modern plants. Feature: Tap changer 2 at +2.5% FCAN and 2 at -2.5% FCBN enables voltage regulation under varying line conditions. Business Impact: Maintains device tolerances and improves performance in long feeders. Application: Essential where feed voltage fluctuates. Feature: NEMA 3R indoor-outdoor enclosure with Grade 304 stainless steel enclosure rating offers weather resistance. Business Impact: Outdoor-ready installation reduces additional housing needs and maintenance. Application: Outdoor substations, weather-exposed control panels, and process lines. Feature: UL Listed certification reinforces safety and compliance. Business Impact: Simplifies procurement and regulatory acceptance across multiple sites. Application: Suitable for regulated facilities and high-availability installations. Feature: Weight and footprint (66 lb; 8 in x 14.25 in x 7.69 in) align with standard mounting patterns (176 frame, 579A wiring). Business Impact: Easy integration into existing layouts, minimal retrofitting. Application: Retrofitting older equipment and new builds with minimal disruption. Feature: 115 °C rise rating supports safe operation in warm environments and moderate ambient temps. Business Impact: Reduces risk of overheating and extends service life. Application: Industrial floors with limited cooling capacity. Feature: 60 Hz single-phase operation matches common plant electrical infrastructure. Business Impact: Seamless compatibility with standard distribution systems. Application: Control rooms, automation racks, and panel assemblies. Feature: Copper windings deliver high conductivity and stable regulation under load. Business Impact: Improves voltage stability for sensitive devices, reducing faults. Application: PLCs, relays, sensors across varied loads.
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FAQs
For outdoor or weather-exposed installations, use the IP-rated NEMA 3R enclosure as specified. Ensure adequate clearance for cooling and access, mount on a stable surface using the 176 frame footprint, and plan routing with the 579A wiring connection. The 66 lb weight and compact 8x14.25x7.69 in dimensions facilitate mounting in tight spaces while maintaining service access for routine inspections.
This transformer provides 3 kVA, with a 480 V primary and 120 V secondary, operating at 60 Hz in a single-phase configuration. It uses copper windings and includes taps at +2.5% FCAN and -2.5% FCBN to regulate secondary voltage. The enclosure supports indoor-outdoor use, and the unit carries UL Listing for safety and performance.
Yes. The NEMA 3R indoor-outdoor enclosure and Grade 304 stainless steel construction provide weather resistance and corrosion protection, making it suitable for outdoor control panels. UL Listed certification adds an additional layer of safety compliance, helping procurement teams meet internal and regulatory requirements while delivering reliable control power for PLCs and automation equipment.
Key certifications include UL Listed for safety compliance and a NEMA 3R enclosure rating indicating weather-resistant capability for indoor-outdoor use. The Grade 304 stainless steel enclosure supports durability in corrosive environments. These certifications matter because they streamline regulatory approvals, reduce risk during audits, and support long-term reliability in harsh industrial settings.
The transformer carries Eaton’s warranty of one year from installation or eighteen months from shipment, whichever occurs first. This, combined with rugged copper windings, encapsulated construction, and a robust enclosure, reduces maintenance costs, lowers downtime, and supports predictable total cost of ownership in multi-site deployments.