Eaton S18N11S03 General-Purpose Transformer - UL Listed
Part Number: S18N11S03
Quick Summary
S18N11S03 is a general-purpose encapsulated transformer designed for industrial control panels and equipment rooms. Operators often struggle with harsh environments, space constraints, and the demand for compliant, plug-and-play installations. UL Listed and CSA Certified ensure safety and performance, while NEMA 3R enclosure supports indoor-outdoor service. Designed for 3 kVA, 60 Hz operation with 208/416 V primary and 120/240 V secondary, it delivers reliable power distribution and minimizes lifecycle costs for controls and automation. Compact FR176 framing and aluminum windings simplify installation, reduce weight, and improve efficiency in confined spaces. A 115 °C rise and the NEMA ST-20 sound profile help meet demanding codes for modern factories and multi-cabinet installations.
Product Information
Extended Description
S18N11S03 Eaton: Eaton General purpose encapsulated transformer, general-purpose encapsulated, EP, aluminum, NEMA 3R, FR176, 60 Hz, single-phase, 208 V, 416 V, 120/240 V, NEMA ST-20, None, 115 °C rise, 3 KVA, indoor-outdoor
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S18N11S03
UPC
786680129568
Product Length/Depth
7.69 in
Product Height
11.06 in
Product Width
8 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 CSA Certified
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
FR176
Tap size
None
Type
General-purpose encapsulated
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
208 V, 416 V
Secondary Voltage
120/240 V
Sound Level
NEMA ST-20
Temperature rise
115 °C rise
Volt ampere rating
3 kVA
Weathershield
Indoor-Outdoor
General-purpose encapsulated EP design with an aluminum coil frames a compact, rugged transformer. This encapsulation protects windings from dust, moisture, and mechanical shocks, reducing downtime in harsh plant environments and simplifying field maintenance in industrial control cabinets. The result is improved reliability and lower total cost of ownership for automation projects. NEMA 3R enclosure provides indoor-outdoor service and weather resistance, enabling installation in exposed locations or weather-protected outdoor cabinets without extra housings. Operators benefit from reduced enclosure requirements and faster installation in tight control panels. The 3 kVA, 60 Hz, single-phase rating delivers sufficient headroom for typical control loads, minimizing the need for downstream transformers and making it easier to scale automation. Flexible primary 208/416 V and secondary 120/240 V voltages support common power distributions, simplifying integration with existing plant electrical systems. Certifications from UL and CSA reinforce procurement confidence and regulatory compliance across manufacturing environments. A 115 °C temperature rise margin supports continuous operation under heavy workloads, while FR176 framing ensures compatibility with compact cabinet footprints. The aluminum coil reduces overall weight and supports easier handling during installation and service in busy automation lines. Weathershield capability enables reliable operation in mixed indoor-outdoor environments, expanding possible installation locations and reducing total cost of ownership for power management in industrial facilities.
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FAQs
Yes. The S18N11S03 uses a NEMA 3R enclosure designed for indoor-outdoor service, providing weather resistance suitable for control panels and compact machinery cabinets. Its FR176 frame fits common panel footprints, and the compact 7.69 in depth, 8 in width, and 11.06 in height support installation in space-constrained environments.
This transformer is a 3 kVA, single-phase unit. It features 208/416 V primary voltage and 120/240 V secondary voltage, operating at 60 Hz. The combination supports typical control circuits, solenoids, and small automation loads within industrial cabinets.
It is ideal for industrial control panels, automation equipment rooms, and equipment requiring reliable step-down power with indoor-outdoor versatility. The 3 kVA rating and 120/240 V secondary are well-matched to control circuits, lighting blocks, and small motor-control loads in manufacturing cells and process lines.
The unit is UL Listed and CSA Certified, providing validated safety and compliance for electrical equipment used in industrial facilities. These certifications reduce procurement risk, simplify approval cycles with customers, and help meet regulatory requirements in many regions for power distribution components.
Eaton offers a one-year warranty from installation or eighteen months from shipment, whichever comes first. The aluminum coil, rugged EP encapsulation, and NEMA 3R enclosure contribute to durable performance with minimal maintenance. For lifecycle cost, the compact size, lighter weight, and robust enclosure reduce replacement frequency and support easier servicing in busy automation environments.