Eaton S18N11E05 General-Purpose Transformer - UL Listed
Part Number: S18N11E05
Quick Summary
The Eaton S18N11E05 General-Purpose Transformer provides reliable voltage conversion for industrial control panels. When space, weather, or maintenance constraints complicate power delivery, this encapsulated unit streamlines installation and service. UL Listed safety certification and a NEMA 3R indoor-outdoor enclosure support rugged environments. With a 5 kVA rating, single-phase operation at 208/416 V primary and 120/240 V secondary, it scales for growing control loads. Electrostatic shielding plus aluminum winding reduces EMI, while resilient construction ensures long-term reliability in challenging facilities. Its compact footprint and straightforward wiring simplify OEM integration, spare parts planning, and maintenance budgets. This combination delivers predictable performance, easier sourcing, and faster project timelines for electrical engineers and procurement teams.
Product Information
Extended Description
S18N11E05 Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 177, 60 Hz, single-phase, 208 V, 416 V, 120/240 V, NONE, 115 °C rise, 5 KVA, indoor-outdoor, 3Q
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S18N11E05
UPC
786680060564
Product Length/Depth
9.89 in
Product Height
16 in
Product Width
10.38 in
Product Weight
120 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
177
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
3Q
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
208 V, 416 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
5 kVA
Special features
Electrostatically shielded
Weathershield
Indoor-Outdoor
Encapsulation and enclosure deliver rugged reliability. The NEMA 3R housing with electrostatic shielding protects against dust, moisture, and EMI, reducing field failures and warranty costs while enabling outdoor installations in industrial settings. This is essential for control panels located on factory floors or exterior enclosures where weather exposure is a concern. Voltage flexibility supports a wide range of equipment: 208/416 V primary to 120/240 V secondary, 60 Hz operation, 5 kVA rating, single-phase configuration. This translates to simpler procurement and fewer transformer SKUs, improving project timelines and spare-part planning. Aluminum coil construction contributes to corrosion resistance and cost efficiency, while the 115°C rise capability maintains performance under continuous loads. 3Q wiring enables quick field assembly, reducing installation labor and risk of miswiring. The design aligns with industrial automation practices for reliable power in demanding environments.
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FAQs
Assess panel voltage requirements: primary voltages of 208 or 416 V and a secondary of 120/240 V, 60 Hz. Ensure the panel space accommodates the 9.89 inch depth, 16 inch height, and 10.38 inch width. The 5 kVA rating matches many control circuits, reducing the need for multiple transformers and simplifying spare parts.
Key specs include 5 kVA, single-phase operation, 60 Hz frequency, primary 208/416 V, secondary 120/240 V, 115 °C rise, aluminum coil, 177 frame, and electrostatic shielding. The transformer is UL Listed and designed for indoor-outdoor use in a NEMA 3R enclosure, supporting robust control applications.
Yes. The unit uses a NEMA 3R enclosure and Weathershield design suitable for indoor-outdoor service. Electrostatic shielding and aluminum windings help resist EMI and corrosion. This makes it appropriate for exterior control panels, machine rooms adjacent to outdoors, and harsh industrial settings without compromising safety.
Follow the 3Q wiring arrangement for field wiring and ensure proper clearance around the transformer for cooling. Mount in a ventilated area within the 115 °C rise limit, and verify primary and secondary connections match the load. The UL Listed rating supports standard maintenance procedures and reduces compliance concerns.
The transformer carries Eaton's warranty policy of one year from installation or 18 months from shipment, whichever occurs first. Its EMI shielding, rugged enclosure, and long service life help reduce maintenance and replacement costs, delivering a lower total cost of ownership in demanding automation environments.