Eaton S27N11S01A General-Purpose Transformer - UL Listed
Part Number: S27N11S01A
Quick Summary
Eaton General-Purpose Encapsulated Transformer is designed for reliable power conversion in control panels and industrial equipment. This single-phase, 1 kVA unit steps 277 V down to 120/240 V, with an aluminum coil and epoxy encapsulation for rugged service. The enclosure is rated NEMA 3R for indoor-outdoor use, making it a practical choice where weather resistance matters. UL Listed certification ensures code compliance across electrical installations in commercial and light industrial settings. By combining compact dimensions with a robust 115 °C rise and 60 Hz operation, this transformer helps reduce panel size while maintaining performance. For procurement teams, the 24 lb weight and 5.99 by 11.28 by 5.75 in footprint simplify site planning and installation.
Product Information
Extended Description
S27N11S01A Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 59A, 60 Hz, single-phase, 277 V, 120/240 V, NONE, 115 °C rise, 1 KVA, indoor-outdoor, 524A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S27N11S01A
UPC
782114169759
Product Length/Depth
5.75 in
Product Height
11.28 in
Product Width
5.99 in
Product Weight
24 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
Model A
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
59A
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
524A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
277 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
1 kVA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S27N11S01A
Selling Policy 25-000 - Distribution and Control Products and Services
Encapsulated EP design with aluminum coil delivers rugged protection against moisture, dust, and vibration, reducing field failures. This translates to lower maintenance costs and longer service life in harsh environments, such as outdoor control panels and damp plant settings, where reliability directly affects uptime. The 1 kVA, single-phase, 60 Hz rating with a 277 V to 120/240 V secondary provides flexible power distribution for PLCs, relays, and sensing equipment, enabling streamlined wiring and fewer transformers in mixed-voltage panels. The NEMA 3R enclosure and Weathershield construction enable true indoor-outdoor installation, reducing enclosure costs and simplifying outdoor installations. With a 24 lb weight and compact footprint (5.75 in L, 11.28 in H, 5.99 in W), installation is easier and faster in standard electrical spaces. UL Listed and the documented warranty support procurement compliance and long-term value.
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FAQs
For installers, mount within a protected enclosure, account for the 24 lb weight and footprint (5.99 in W × 11.28 in H × 5.75 in D), and ensure proper clearance for ventilation. Connect to a 277 V primary and 120/240 V secondary circuit using the 524A wiring connection, with UL Listed compliance for the final assembly.
The device delivers 1 kVA at 60 Hz in a single-phase configuration, stepping down 277 V to 120/240 V. Aluminum coil and EP encapsulation provide reliability, while NEMA 3R enclosure supports indoor-outdoor use, making it ideal for control panels that require compact, robust power conversion.
Yes. The S27N11S01A uses a NEMA 3R enclosure and Weathershield designation to withstand outdoor or damp indoor environments, simplifying outdoor installations and reducing the need for separate weatherproof housings.
The transformer is UL Listed, ensuring compliance with electrical safety standards. The NEMA 3R enclosure rating provides weather resistance suitable for indoor-outdoor installations, helping meet local codes for industrial and commercial facilities.
With a compact footprint, reliable operation, and a one-year warranty (or 18 months from shipment), you gain predictable maintenance costs and reduced downtime. Eaton’s warranty policy and UL listing support procurement decisions and long-term value.