Eaton S57N11S03SS General purpose encapsulated transformer - UL Listed
Part Number: S57N11S03SS
Quick Summary
Eaton general purpose encapsulated transformer is a compact, reliable source of power for control panels and industrial equipment. Engineers often struggle with moisture, space constraints, and wiring complexity in harsh environments, which slows commissioning. It is UL Listed and ships with a rugged NEMA 3R enclosure, plus a Grade 304 stainless steel enclosure option noted in the catalog, ensuring corrosion resistance in damp or outdoor locations. This 3 kVA, single-phase transformer features a 575 V primary and 120/240 V secondary, delivering scalable panel power for automation and machine control without sacrificing footprint or ease of installation.
Product Information
Extended Description
S57N11S03SS Eaton: Eaton, general purpose encapsulated transformer, ep, single-phase, pv: 575v, taps: none, sv: 120/240v, 115°c, 3 kva, al windings, frame: 176, indoor-outdoor
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S57N11S03SS
UPC
786680053580
Product Length/Depth
8 in
Product Height
14.25 in
Product Width
7.69 in
Product Weight
65 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
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
176
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
524L
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
575 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
3 kVA
Weathershield
Indoor-Outdoor
Feature → Business Impact → Application: General-purpose encapsulated EP design enables compact installation with reliable isolation, reducing panel size and simplifying wiring so engineers can fit more controls in crowded cabinets. Benefit: improved space efficiency and safer, more stable control circuits in automated lines. Application: control panels for packaging, conveyors, and process automation. Feature → Business Impact → Application: 575 V primary and 120/240 V secondary provide flexible, standard-control voltages from a single unit, cutting part diversity and inventory costs while streamlining sourcing. Benefit: faster commissioning and lower total cost of ownership in industrial automation. Application: machine controls and panel boards. Feature → Business Impact → Application: NEMA 3R indoor-outdoor enclosure with Grade 304 stainless steel catalog enclosure improves corrosion resistance and weather tolerance. Benefit: dependable operation in harsh environments with reduced maintenance. Application: outdoor control panels and damp locations. Feature → Business Impact → Application: Aluminum windings with a 3 kVA rating deliver robust thermal performance for continuous operation. Benefit: reliable uptime and extended service life in high-demand applications. Application: HVAC controls, lighting panels, and process automation. Feature → Business Impact → Application: 524L wiring connection and no taps simplify field wiring and serviceability. Benefit: faster installations and easier upgrades with less risk of mis-wiring. Application: replacement transformers in retrofit projects and new build-outs.
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FAQs
Yes. The S57N11S03SS is a single‑phase, 3 kVA transformer with a 575 V primary and 120/240 V secondary, designed for standard control panels and automation cabinets. Its EP encapsulated design and 524L wiring connection simplify mounting in typical panel racks, while its NEMA 3R enclosure supports indoor and outdoor locations.
Key specs include 3 kVA power rating, 60 Hz frequency, single‑phase configuration, 575 V primary, 120/240 V secondary, aluminum winding, and a 115 °C rise. The unit uses a NEMA 3R enclosure and weighs about 65 lb, with a frame size of 176 for installation compatibility and a 8 in length by 14.25 in height by 7.69 in width footprint.
This transformer is ideal for machine controls, process automation, HVAC control panels, and general power distribution in industrial environments. Its indoor-outdoor capability, corrosion-resistant enclosure options, and UL Listed certification make it suitable for harsh environments and retrofit projects where reliable panel power is critical.
The S57N11S03SS is UL Listed and features a NEMA 3R enclosure suitable for indoor-outdoor use. Catalog notes indicate a Grade 304 stainless steel enclosure option, enhancing corrosion resistance in damp or outdoor locations and supporting long-term compliance in regulated environments.
With a 3 kVA rating and robust enclosure, this transformer delivers dependable uptime and lower maintenance costs in high-demand panels. Its aluminum windings and sealed EP design reduce moisture ingress, while the UL Listed rating and durable enclosure simplify warranty and service planning under Eaton’s policy.