Eaton S20N08A03N Buck-Boost Encapsulated Transformer - UL
Part Number: S20N08A03N
Quick Summary
Eaton S20N08A03N Buck-Boost encapsulated transformer regulates voltage for industrial control panels. Voltage fluctuations in demanding environments can trigger unplanned downtime and equipment wear. UL Listed, NEMA 3R enclosure, and indoor-outdoor compatibility ensure reliable service across facilities. Its 3 kVA rating and single-phase, 60 Hz operation support 240/480 V inputs and 24/48 V outputs. This makes it a practical choice for modern automation and equipment upgrades. By delivering stable voltage, the transformer minimizes heat, extends component life, and reduces warranty incidents. Engineers appreciate the compact footprint and rugged epoxy encapsulation for easy installation and maintenance. The unit's indoor-outdoor versatility helps standardize power for diverse machines, panels, and control relays.
Product Information
Extended Description
S20N08A03N Eaton: Eaton General purpose encapsulated transformer, buck-boost general-purpose encapsulated transformer, EP, aluminum, NEMA 3R, 176, 60 Hz, single-phase, 240 V, 480 V, 24/48 V, NONE, 115 °C rise, 3 KVA, indoor-outdoor, 509C
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N08A03N
UPC
786680383380
Product Length/Depth
8 in
Product Height
14.25 in
Product Width
7.69 in
Product Weight
72 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 N
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
176
Tap size
None
Type
Buck-Boost General-Purpose Encapsulated Transformer
Wiring connection
509C
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
24/48 V
Temperature rise
115 °C rise
Volt ampere rating
3 kVA
Weathershield
Indoor-Outdoor
Feature a robust buck-boost encapsulated design that delivers stable voltage to control panels, reducing nuisance trips and enabling smoother automation sequences. Business impact: improved line reliability and reduced unplanned downtime in manufacturing environments. Application: automation retrofits and panel upgrades in 240/480 V systems. Feature a weather-ready NEMA 3R enclosure with indoor-outdoor capability and epoxy encapsulation, delivering rugged performance in plant floors and outdoor enclosures. Business impact: lower maintenance costs and longer service intervals. Application: outdoor electrical rooms, harsh industrial environments, and weather-exposed installations. Feature aluminum coil construction and EP encapsulation for noise reduction and moisture resistance. Business impact: extended transformer life and safer operation in humid facilities. Application: new installations and upgrades in automated lines. Feature a 3 kVA, single-phase, 60 Hz transformer with 240/480 V primary and 24/48 V secondary. Business impact: compact power for diverse equipment while maintaining voltage integrity. Application: control panels, motor starters, and equipment requiring buck-boost stabilization. Feature UL Listed certification and Eaton warranty policy support compliance and post-installation support, reducing risk and providing end-user confidence. Application: procurement approvals and long-term maintenance planning.
Get a Quick Quote for a Eaton S20N08A03N
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton S20N08A03N?
Enquire Now
FAQs
The S20N08A03N is a single-phase, 3 kVA buck-boost transformer designed for industrial control panels operating at 240 V or 480 V. It provides stabilized output at 24/48 V and supports 60 Hz service, making it suitable for panel upgrades, automation retrofits, and equipment that requires consistent voltage in mixed-supply environments.
Key specifications include 3 kVA VA rating, 60 Hz frequency, single-phase configuration, primary voltages of 240 V and 480 V, and secondary voltages of 24/48 V. It is UL Listed and designed for indoor-outdoor use with a NEMA 3R enclosure, supporting reliable operation in varied industrial settings.
Yes. The unit is rated for indoor-outdoor use with a NEMA 3R enclosure and Weathershield support, providing weather resistance and protection against moisture ingress. Epoxy encapsulation adds robustness, allowing reliable operation on outdoor panels and exposed installations in factories or outdoor equipment rooms.
Eaton provides a warranty aligned with policy 25-000: one year from the date of installation or eighteen months from shipment, whichever occurs first. This coverage, combined with UL Listed certification, supports ongoing maintenance planning and reduces total cost of ownership for automation projects.
By stabilizing voltage in control panels, the transformer reduces nuisance trips, improves equipment uptime, and extends component life. Its compact 3 kVA footprint, 240/480 V inputs, and 24/48 V outputs simplify panel designs, while UL Listing and rugged construction support compliant installations and lower risk during upgrades and retrofits.