Eaton S20N11B16SS Encapsulated Transformer - UL Listed
Part Number: S20N11B16SS
Quick Summary
The Eaton S20N11B16SS encapsulated transformer delivers reliable single-phase power isolation for industrial equipment. In compact control environments, installers often battle moisture, dust, and outdoor exposure; this unit’s NEMA 3R enclosure and indoor-outdoor ratings address those challenges with confidence. It carries UL Listed safety certification and features a Grade 304 stainless steel enclosure note, underscoring its corrosion resistance and long-term durability in harsh settings. With a 1.5 kVA rating and 240/480 V primary to 120/240 V secondary, it integrates seamlessly into power management and automation systems, delivering consistent, code-compliant power where it’s needed most.
Product Information
Extended Description
S20N11B16SS Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 68, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, NONE, 80 °C rise, 1.5 KVA, indoor-outdoor, 3A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11B16SS
UPC
786680053658
Product Length/Depth
6.52 in
Product Height
13.41 in
Product Width
6.37 in
Product Weight
46 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
68
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
3A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
80 °C rise
Volt ampere rating
1.5 kVA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S20N11B16SS
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The encapsulated EP design with an aluminum coil provides rugged protection against dust, moisture, and incidental contact, reducing field faults and maintenance costs. This translates to lower downtime and longer service intervals for critical automation lines in manufacturing or packaging, where reliability directly affects throughput. Feature → Application: The transformer offers a 1.5 kVA rating with a 240/480 V primary and 120/240 V secondary, enabling efficient step-down for control circuits and auxiliary equipment in panel builders and OEMs. This supports compact, cost-effective control architectures without sacrificing performance or safety. Feature → Application: The NEMA 3R enclosure and indoor-outdoor weathershield enable outdoor installations and harsher environments, expanding deployment options in outdoor enclosures, substations, or weather-protected spaces with confidence in long-term protection. Feature → Business Impact: UL Listed certification ensures compliance with safety standards, while Grade 304 stainless steel enclosure notes reinforce corrosion resistance, lowering total cost of ownership in harsh facilities. Feature → Application: The 80 °C rise specification and single-phase operation at 60 Hz align with typical U.S. power systems, simplifying installation in commercial and light-industrial settings and reducing custom engineering time. Feature → Benefit: With 46 lb weight and compact dimensions, the S20N11B16SS fits standard electrical spaces, accelerates field mounting, and enables easier retrofits without heavy lifting or specialized rigging.
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FAQs
For optimal installation, plan for the transformer’s 6.52 in depth, 13.41 in height, and 6.37 in width within a suitable cabinet or enclosure. Use the 68 frame designation to verify fit in standard electrical spaces, and ensure proper clearance for ventilation. The UL Listed unit with NEMA 3R enclosure supports outdoor or indoor installations, simplifying panel layouts in varied environments.
The transformer provides a 240 V or 480 V primary input and a 120/240 V secondary output, with a 1.5 kVA (1500 VA) rating. It operates at 60 Hz and is designed for single-phase service, delivering reliable control power for automation circuits and low-voltage devices while maintaining tight voltage regulation within its rating.
Yes. The unit features an indoor-outdoor Weathershield and a NEMA 3R enclosure, offering protection against moisture and dust in outdoor or harsh indoor environments. Its Grade 304 stainless steel enclosure (catalog notes) enhances corrosion resistance, making it suitable for control rooms, outdoor cabinets, and weather-exposed installations.
This transformer is UL Listed, providing industry-standard safety certification. The metal enclosure and rugged construction meet code requirements for industrial power distribution, while the NEMA 3R rating supports dependable operation under varied environmental conditions. Always verify local codes for additional compliance needs in your region.
The Eaton S20N11B16SS is backed by Eaton’s warranty policy of one year from installation or eighteen months from shipment, whichever occurs first. Routine maintenance should focus on enclosure integrity, connection torque, and insulation checks. The robust design and corrosion-resistant enclosure reduce downtime and replacement costs, delivering favorable total cost of ownership in demanding facilities.