Eaton S20N11E76A General-Purpose Encapsulated Transformer - UL Listed
Part Number: S20N11E76A
Quick Summary
Eaton General purpose encapsulated transformer provides reliable voltage conversion for control panels and industrial circuits. In many applications, engineers battle heat, moisture, and EMI within compact enclosures, risking downtime and inconsistent performance. UL Listed certification paired with a rugged NEMA 3R enclosure supports safe, durable operation in indoor-outdoor environments, while the aluminum coil and 60 Hz single-phase design align with common industrial specs. Designed for efficiency and ease of procurement, this transformer accommodates 0.75 kVA loads with a compact footprint, enabling predictable performance in automation and power-distribution tasks.
Product Information
Extended Description
S20N11E76A Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 58A, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, NONE, 115 °C rise, 0.75 KVA, indoor-outdoor, 90A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11E76A
UPC
786680104541
Product Length/Depth
5.75 in
Product Height
11.28 in
Product Width
5.99 in
Product Weight
24 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
Model A
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
58A
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
90A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
0.75 kVA
Special features
Electrostatically shielded
Weathershield
Indoor-Outdoor
Encapsulated epoxy design with an aluminum winding delivers robust moisture and vibration protection, reducing insulation failures and extending service life in harsh environments. This translates to higher panel uptime and lower maintenance costs in industrial automation applications, including machine control and distributed power for low-voltage systems. The unit’s NEMA 3R enclosure enables indoor-outdoor installation, simplifying site wiring and reducing the need for separate weatherproof housings while meeting common NEC and safety standards. With a 0.75 kVA rating, 240/480 V primary and 120/240 V secondary, it supports standard control circuits and motor-control center feeders, delivering reliable voltage conversion without over-dimensioning the panel. The electrostatically shielded construction minimizes EMI, improving control accuracy and reducing signal interference in nearby instrumentation. The 115 °C rise rating informs thermal planning for continuous operation, while the 24 lb weight and compact 5.75 in depth, 11.28 in height, and 5.99 in width footprint simplify mounting and serviceability. Eaton’s warranty policy (25-000) provides an additional layer of risk mitigation for mission-critical automation investments.
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FAQs
Begin by confirming the panel enclosure is rated for indoor-outdoor service and has adequate clearance for the 11.28 in height and 5.99 in width of the unit. Mount the transformer on a flat surface, secure with appropriate hardware, and connect the 240 V or 480 V primary leads to the supply side. Tie the 120/240 V secondary leads to the load circuits, ensuring proper insulation, strain relief, and torque per manufacturer guidelines. Verify integrity of the encapsulation and check for EMI sources nearby. Finally, perform a no-load and loaded test to confirm voltage accuracy and stability.
The S20N11E76A is a 0.75 kVA, single-phase transformer with 60 Hz operation. Primary voltages are 240 V and 480 V, while the secondary is 120/240 V. It features an aluminum winding, 115 °C rise, and an NEMA 3R enclosure suitable for indoor-outdoor use. It is UL Listed and designed for 58A frame and 90A wiring connections, with a total weight of about 24 lb.
Yes. The transformer uses a NEMA 3R enclosure and is rated for indoor-outdoor service, making it appropriate for outdoor installations when mounted per specifications. The epoxy-encapsulated design provides moisture and environmental protection, while UL Listing confirms compliance with electrical safety standards for outdoor exposure in appropriate panels and enclosures.
Key certifications and ratings include UL Listed for electrical safety and reliability. The unit features a NEMA 3R enclosure for indoor-outdoor protection and electrostatic shielding to minimize EMI. It is designed for 60 Hz, single-phase operation with a 0.75 kVA rating, and is suitable for standard industrial power distribution and control applications requiring durable, protected performance.
The encapsulated design reduces moisture ingress and vibration-related wear, lowering maintenance costs and downtime in harsh environments. Its compact footprint and light 24 lb weight simplify installation and service logistics, saving labor and space in panels. The warranty (Eaton Selling Policy 25-000) provides a defined support period, while UL Listing and NEMA 3R protection help ensure long-term reliability in automation and power-distribution roles.