Eaton S39N11S03 General-Purpose Encapsulated Transformer - UL Listed
Part Number: S39N11S03
Quick Summary
Eaton general purpose encapsulated transformer is designed to deliver reliable, compact power conversion for industrial control panels and equipment rooms. Engineers often struggle with outdoor performance, enclosure protection, and heat rise in tight electrical spaces; this unit addresses those challenges with a durable NEMA 3R enclosure and 115 °C rise. UL Listed safety certification provides compliance confidence, while a 3 kVA rating supports scalable power for 400 V to 120/240 V distributions. Designed for efficiency and easy installation, it complements Eaton's power-management portfolio and supports smart panel designs in automation and distribution applications. Its 524S wiring connection and indoor-outdoor capability help streamline retrofit projects and reduce field wiring errors.
Product Information
Extended Description
S39N11S03 Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 176, 60 Hz, single-phase, 400 V, 120/240 V, NONE, 115 °C rise, 3 KVA, indoor-outdoor, 524S
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S39N11S03
UPC
786680097430
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
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
176
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
524S
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
400 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
3 kVA
Weathershield
Indoor-Outdoor
NEMA 3R enclosure with EP aluminum construction provides weather resistance for indoor-outdoor use, reducing corrosion risk and maintenance needs while enabling outdoor installations without extra housings. Business impact: longer service life and lower total cost of ownership; Application: control cabinets and outdoor-rated panels in automation lines. Single-phase 60 Hz operation with a 3 kVA rating, 400 V primary and 120/240 V secondary offers flexible voltage conversion and standardization across multiple machines. Business impact: simplified procurement, faster panel designs, and consistent performance; Application: powering PLCs, sensors, and drives in machine assemblies. Aluminum coil and encapsulated design reduce weight and corrosion exposure, contributing to easier handling and lower lifecycle costs. Business impact: easier field service and reduced maintenance; Application: compact installations with weight and space constraints in automation rooftops or wall-mounted panels. 115 °C rise rating enables compact footprints without sacrificing performance, while the 524S wiring connection supports straightforward terminations. Business impact: smaller enclosures, faster wiring, and predictable thermal margins; Application: retrofit projects and new builds where space is at a premium. UL Listed certification and Eaton warranty policy provide compliance assurance and post-sale support, mitigating procurement risk. Business impact: audit-ready safety and reliable service; Application: industrial control cabinets and critical distribution networks. Dimensions and weight (8 in x 14.25 in x 7.69 in; 65 lb) offer predictable fit and manageable installation in tight panel spaces. Business impact: faster onboarding for electricians and reduced site disruptions; Application: panel upgrades and new automation deployments.
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FAQs
The S39N11S03 is designed for 400 V primary input and 120/240 V secondary output, operating at 60 Hz in a single-phase configuration with a 3 kVA rating. This combination supports standard control panels and automation cabinets, enabling uniform power distribution across devices. The 524S wiring connection simplifies terminations, while the 65 lb weight and 8 x 14.25 x 7.69 in footprint fit typical panel spaces and mounting schemes.
The unit uses a NEMA 3R enclosure with EP aluminum design, suitable for indoor-outdoor installation and harsh environments. Plan for weather exposure, space for wiring, and access for service. Its 115 °C rise rating supports compact layouts, but ensure adequate ventilation around the enclosure. The 524S wiring and mounting dimensions simplify retrofits into existing outdoor or semi-protected panel areas.
This transformer is UL Listed, offering recognized safety conformity for electrical equipment. While CE or IP ratings are not indicated in the data, UL Listing provides robust compliance for many North American installations. Pair this with the NEMA 3R enclosure to meet typical environmental and protection requirements in industrial automation environments.
Eaton provides a warranty policy (25-000) covering one year from installation or eighteen months from shipment, whichever occurs first. This supports post-sale service and replacement for manufacturing defects. For field maintenance, rely on Eaton's authorized channels to ensure compatibility of parts and timely assistance with anything from routine checks to fault diagnosis.
The encapsulated design and weather-ready enclosure minimize downtime and maintenance, reducing costly service calls for outdoor systems. With a 3 kVA rating and 400 V to 120/240 V conversion, engineering teams can standardize power for multiple loads, lowering inventory requirements and labor for wiring. The UL Listed safety and compact footprint translate to faster deployments and predictable energy management in automation applications.