Eaton S48N27S03 General-Purpose Transformer - UL Listed
Part Number: S48N27S03
Quick Summary
Eaton S48N27S03 General-Purpose Encapsulated Transformer is designed to supply reliable 3 kVA power conversion from 480 V to 277 V for control panels and industrial equipment. This encapsulated unit minimizes noise, enhances safety, and simplifies installation in tight spaces. Users often struggle with weather exposure, regulatory compliance, and maintenance planning; the NEMA 3R enclosure and UL Listed rating address these concerns while supporting durable performance. With an aluminum coil and 60 Hz operation, the device delivers efficiency and resilience for demanding environments. The compact footprint also aligns with efficient panel design and streamlined spare-part sourcing, supporting lower lifecycle costs and improved uptime in automation projects.
Product Information
Extended Description
S48N27S03 Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 176, 60 Hz, single-phase, 480 V, 277 V, NONE, 115 °C rise, 3 KVA, indoor-outdoor, 511G
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S48N27S03
UPC
786680050121
Product Length/Depth
8 in
Product Height
14.25 in
Product Width
7.69 in
Product Weight
64 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
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
176
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
511G
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
480 V
Secondary Voltage
277 V
Temperature rise
115 °C rise
Volt ampere rating
3 kVA
Weathershield
Indoor-Outdoor
Feature: 3 kVA, single-phase, 60 Hz, 480 V primary to 277 V secondary. Business Impact: Enables precise voltage transformation for common control circuits without needing multiple transformers, reducing panel footprint and inventory. Application: Control panels, machine controls, automation cabinets. Feature: NEMA 3R enclosure with indoor-outdoor capability. Business Impact: Provides weather resistance and safety compliance in mixed environments, reducing installation constraints and retrofit costs. Application: Outdoor panels, plant rooms, equipment housings. Feature: UL Listed certification. Business Impact: Simplifies procurement audits, accelerates commissioning, and supports regulatory compliance. Application: Industrial systems in regulated facilities. Feature: Aluminum coil and encapsulated epoxy design. Business Impact: Lower weight with durable corrosion resistance and efficient heat dissipation, extending service life. Application: Harsh environments, long-term maintenance reduction. Feature: Compact footprint and practical dimensions (8 in length, 14.25 in height, 7.69 in width) with a 64 lb weight. Business Impact: Easier mounting, faster installation, and repeatable replacement in retrofit projects. Application: Panel fabrication, upgrade programs, space-constrained installations. Feature: Temperature rise rating of 115 °C. Business Impact: Provides a clear safety margin for peak loads and extended operation without overheating. Application: Startups, commissioning, and continuous operation in automation systems.
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FAQs
The unit measures 8 in L x 14.25 in H x 7.69 in W and weighs 64 lb, with wiring connection 511G. It is designed for panel mounting in standard control cabinets and retrofit projects. Ensure mounting clearances match the enclosure and allow for adequate heat dissipation to maintain the 115 °C rise rating.
This is a 3 kVA, single-phase transformer with a 480 V primary and 277 V secondary at 60 Hz. For load planning, size feeders and breakers to support up to 3 kVA while considering voltage drop, temperature rise, and duty cycle. The aluminum coil supports efficient heat management under typical industrial loads.
Yes. The transformer features a NEMA 3R enclosure and an indoor-outdoor capability, making it suitable for exposed areas and plant floors. UL Listed certification further confirms compliance with safety standards for outdoor installations, reducing commissioning risk.
UL Listed certification ensures the product meets recognized safety standards, which simplifies procurement, installation, and regulatory audits. The NEMA 3R enclosure also indicates adequate protection against dust, rain, and corrosion in mixed indoor-outdoor environments.
The Eaton transformer carries a one-year warranty from installation or eighteen months from shipment, whichever occurs first. This warranty supports maintenance planning and reduces lifecycle uncertainty, contributing to a lower total cost of ownership when paired with long-term reliability.