Eaton S12N48B05CU General-Purpose Transformer - UL Listed
Part Number: S12N48B05CU
Quick Summary
The Eaton S12N48B05CU general-purpose encapsulated transformer delivers reliable power conversion for industrial controls and distribution. Engineers often struggle with moisture, dust, and space constraints in harsh environments, but the encapsulated design and rugged NEMA 3R enclosure help mitigate these risks. This UL Listed unit uses copper windings and an 80 °C rise rating to ensure dependable voltage transformation for critical equipment. With a 5 kVA rating and a compact 177 frame, it fits mid-scale control panels while supporting indoor-outdoor installations. The 120 V primary to 480 V secondary configuration provides a practical step-up for equipment needing higher secondary voltage in factory-floor applications, all optimized for 60 Hz U.S. power systems.
Product Information
Extended Description
S12N48B05CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 177, 60 Hz, single-phase, 120 V, 480 V, NONE, 80 °C rise, 5 KVA, indoor-outdoor, 519S
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S12N48B05CU
UPC
786685267241
Product Length/Depth
9.89 in
Product Height
16 in
Product Width
10.38 in
Product Weight
53 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
Copper
Design
EP
Enclosure
NEMA 3R
Frame
177
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
519S
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
120 V
Secondary Voltage
480 V
Temperature rise
80 °C rise
Volt ampere rating
5 kVA
Weathershield
Indoor-Outdoor
Encapsulated copper-wound construction offers moisture and dust resistance, reducing insulation fatigue and extending service life in harsh environments. Feature → Business Impact → Application: The copper coil and encapsulated design translate into lower maintenance costs and increased reliability for automation panels, enabling uninterrupted production flows and safer shutdowns during faults. This unit’s 120 V to 480 V, 5 kVA, 60 Hz single-phase configuration supports compact control cabinets that require higher secondary voltages without expanding footprint, streamlining scope creep and cabinet redesigns. The NEMA 3R enclosure and indoor-outdoor capability deliver weather-resistant performance for semi-enclosed or exposed installations, minimizing enclosure-related failures while simplifying site approvals and compliance. Wiring via 519S with no tap changes reduces installation time and miswiring risk, accelerating commissioning and startup. The combination of a 177 frame and 53 lb weight supports straightforward mounting and serviceability in existing racks, minimizing retrofit costs. UL Listed certification adds regulatory confidence for contractors and end users, while the 25-000 warranty provides lifecycle protection for asset-intensive facilities. In real-world automation environments, these features translate to predictable voltage transformation, reduced downtime, and lower total cost of ownership.
Get a Quick Quote for a Eaton S12N48B05CU
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton S12N48B05CU?
Enquire Now
FAQs
The S12N48B05CU uses a 177 frame with a 519S wiring connection, designed for straightforward panel mounting and standard control wiring. Its NEMA 3R enclosure supports indoor-outdoor installations, and the non-tapped primary/secondary arrangement simplifies integration with existing power distribution and control circuits. Proper clearances and mounting hardware should follow local codes and Eaton guidelines to ensure safe, reliable operation.
This transformer operates at 60 Hz, is single-phase, and provides a 5 kVA (5,000 VA) rating. It has a 120 V primary voltage and a 480 V secondary voltage, enabling a higher secondary side for devices that require 480 V from a 120 V source, all within a rugged encapsulated package.
Yes. The unit features a NEMA 3R enclosure and is specified as indoor-outdoor with Weathershield capabilities, making it suitable for semi-exposed or outdoor-rated installations typical in industrial automation. Copper windings and encapsulation further enhance durability against moisture and contaminants, supporting long-term reliability in challenging environments.
The S12N48B05CU is UL Listed, providing recognized safety certification for electrical products. Eaton also specifies a warranty policy (25-000) offering one year from installation or eighteen months from shipment, whichever comes first, giving users a clear lifecycle expectation and risk mitigation.
Encapsulation protects windings from moisture, dust, and mechanical shock, reducing insulation degradation and maintenance frequency. Copper windings improve conductivity and thermal performance, supporting stable output under load. Together with a rugged enclosure and standard wiring, these features contribute to lower total cost of ownership through longer mean time between failures and easier field servicing.