Eaton S20N11S81X General-Purpose Transformer - UL Listed
Part Number: S20N11S81X
Quick Summary
Eaton S20N11S81X general-purpose encapsulated transformer delivers reliable single‑phase power for control panels and automation equipment. Space constraints, harsh environments, and ongoing maintenance often complicate transformer selection. UL Listed safety certification, a NEMA 3R enclosure, and indoor-outdoor ratings enable resilient, compliant installations in factories, warehouses, and outdoor enclosures. Aluminum windings, a 0.05 kVA rating, and 50/60 Hz compatibility help minimize downtime and lifecycle costs. This solution aligns with Eaton's catalog standards, reducing BOM variation and accelerating procurement for industrial facilities.
Product Information
Extended Description
S20N11S81X Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 52, 50-60 Hz, single-phase, 240 V, 480 V, 120/240 V, NONE, 115 °C rise, 0.05 KVA, indoor-outdoor, 3A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11S81X
UPC
786680060434
Product Length/Depth
4 in
Product Height
8.91 in
Product Width
4.11 in
Product Weight
7.5 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
50/60 Hz
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
52
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
3A
Frequency rating
50-60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
0.05 kVA
Weathershield
Indoor-Outdoor
Feature → Business Impact → Application: Encapsulated EP design with aluminum windings provides robust protection against dust, moisture, and mechanical exposure, reducing field maintenance and extending service life in variable environments; Application in control cabinets and outdoor panels. Feature → Business Impact → Application: NEMA 3R enclosure with indoor-outdoor rating delivers flexible mounting options and quicker installation in both indoor plant rooms and outdoor switchgear areas; Application in outdoor transformer enclosures and rugged industrial spaces. Feature → Business Impact → Application: Single-phase 50/60 Hz operation with 240 V/480 V primary and 120/240 V secondary supports versatile wiring schemes and load balancing; Application in automation panels and machine control electronics. Feature → Business Impact → Application: 0.05 kVA rating offers precise voltage transformation for small-control circuits, improving efficiency and reducing heat load; Application in sensing circuits, pilot lights, and low-power actuators. Feature → Business Impact → Application: Compact dimensions (4 in L, 8.91 in H, 4.11 in W) and 7.5 lb weight enable easy mounting in tight panel spaces, speeding installation in compact control cabinets and space-constrained switchgear. Feature → Business Impact → Application: UL Listed certification and standard Eaton warranty provide regulatory confidence and lower total cost of ownership through proven performance in demanding environments; Application in critical automation and energy distribution systems.
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FAQs
For reliable panel installation, ensure adequate clearance for heat dissipation around the encapsulated transformer, mount within a NEMA 3R rated enclosure, and align with standard Eaton panel layouts. The unit weighs 7.5 lb and measures 4 in x 4.11 in x 8.91 in, making it suitable for tight spaces. Use appropriate wire sizing for 0.05 kVA loads and observe 50/60 Hz compatibility.
Key specs include single-phase operation with 0.05 kVA rating, primary voltages of 240 V and 480 V, secondary voltage of 120/240 V, frequency rating 50-60 Hz, and a 115 °C rise. The transformer uses aluminum windings and is designed for indoor-outdoor use in controlled environments, offering robust performance for small-control circuits.
Yes. S20N11S81X is designed for indoor-outdoor installations with a NEMA 3R enclosure and an indoor-outdoor rating. This makes it versatile for control cabinets inside facilities or outdoor equipment housings, reducing the need for separate protection solutions and simplifying site planning.
The transformer is UL Listed, indicating compliance with established safety standards. This certification supports regulatory approvals, supplier qualification, and safe operation in industrial environments. The combination with a rugged NEMA 3R enclosure further reinforces reliability in fluctuating conditions, a key factor for facility maintenance budgets and compliance requirements.
Encapsulated winding design with aluminum conductors minimizes moisture ingress and dust intrusion, reducing field maintenance needs. Its compact, lightweight form factor lowers installation labor and space costs. The UL listing and rugged enclosure contribute to lower risk of outages, improving uptime and overall return on investment in automation and power distribution.