Eaton S48N11S03CU Transformer - UL Listed, CSA Certified
Part Number: S48N11S03CU
Quick Summary
The Eaton S48N11S03CU Transformer converts 480 V to 120/240 V for control panels and industrial equipment. Many engineers struggle with heat rise, rugged environments, and mounting constraints that complicate installation and service. UL Listed and CSA Certified products ensure electrical safety and compliance, while NEMA 3R enclosure supports indoor-outdoor use. As an encapsulated copper-wind transformer rated at 3 kVA, it improves efficiency, reduces noise, and simplifies fleet maintenance. This device’s 60 Hz rating aligns with standard North American electrical designs, supporting seamless integration with existing systems. For procurement teams, the documented warranty and spec sheets streamline procurement, compliance reviews, and service planning, delivering predictable total cost of ownership.
Product Information
Extended Description
S48N11S03CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 176, 60 Hz, single-phase, 480 V, 120/240 V, 115 °C rise, 3 KVA, indoor-outdoor, 524H
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S48N11S03CU
UPC
786680103865
Product Length/Depth
8 in
Product Height
14.25 in
Product Width
7.69 in
Product Weight
73 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 CSA Certified
Coil material
Copper
Design
EP
Enclosure
NEMA 3R
Frame
176
Type
General-purpose encapsulated transformer
Wiring connection
524H
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
480 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
3 kVA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S48N11S03CU
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 3 kVA copper-wound transformer with 480 V primary and 120/240 V secondary. Business Impact: Delivers reliable power with efficient energy transfer, minimizing voltage drop and supporting precise load control. Application: Control panels and automation cabinets where stable secondary voltage is critical for sensors and controllers. Feature: Single-phase operation at 60 Hz with a 176 frame and 524H wiring. Business Impact: Simplifies integration with common North American electrical systems, reducing wiring complexity and commissioning time. Application: Industrial machines and process equipment that rely on standard control power. Feature: NEMA 3R enclosure with EP encapsulation. Business Impact: Provides rugged weather resistance for indoor-outdoor installations, extending service life in harsh environments. Application: Outdoor control stations, damp workshops, and partially protected outdoor equipment. Feature: Copper coil material and robust thermal design (115 °C rise). Business Impact: Improves efficiency and heat dissipation, enabling reliable performance under peak loads and longer intervals between maintenance. Application: High-duty automation lines and equipment rooms with limited cooling. Feature: Compact footprint (8 in L x 7.69 in W) and 14.25 in H, weighing 73 lb. Business Impact: Easier installation in space-constrained panels and retrofit projects, reducing mounting hardware needs and installation time. Application: Modernizing legacy panels and small to mid-size automation cabinets. Feature: Certifications and warranty (UL Listed, CSA Certified; 1-year warranty or 18 months from shipment). Business Impact: Compliance assurance lowers procurement risk and provides predictable asset lifecycle support. Application: Procurement and service planning for regulated facilities and uptime-critical applications.
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FAQs
Consider weight, footprint, and mounting clearance. Weighing 73 lb with a footprint of roughly 8 in by 7.69 in and a height of 14.25 in, it benefits from sturdy mounting and proper venting in indoor-outdoor environments. Use 524H wiring and standard lugs to ensure secure terminations, and reference the NEMA 3R enclosure for exterior installations.
Primary voltage is 480 V with a 120/240 V secondary, rated at 3 kVA, single-phase, and 60 Hz. Copper-wound coils and an epoxy encapsulation support efficiency and reliability. The 115 °C rise indicates robust thermal performance in moderate-to-hot environments while maintaining voltage integrity under load.
Yes. The S48N11S03CU uses a NEMA 3R enclosure and indoor-outdoor capability, enabling outdoor installations and damp settings while protecting windings and connections. Copper windings minimize resistance losses, and the rugged construction reduces maintenance intervals in outdoor automation panels and external equipment.
UL Listed and CSA Certified by design, ensuring electrical safety and compliance for North American installations. The device also features an EP general purpose encapsulated construction with a NEMA 3R enclosure, suitable for controlled environments and rugged sites, reducing procurement risk and simplifying regulatory reviews.
With a 3 kVA rating and copper windings, the unit delivers efficient power transfer and low thermal derating, supporting longer service intervals. The one-year warranty (or 18 months from shipment) covers early-life issues, while the documented specifications and files streamline maintenance planning and asset lifecycle ROI in automation and distribution panels.