Eaton S20N11S01CULS42 General-Purpose Transformer - UL Listed
Part Number: S20N11S01CULS42
Quick Summary
The S20N11S01CULS42 general-purpose encapsulated transformer steps 240/480 V to 120/240 V for control panels. Engineers often struggle with noise, bulky footprints, and outdoor suitability that complicate installation and ongoing maintenance. UL Listed safety certification, NEMA 3R enclosure, and 60 Hz single-phase operation provide reliable, compliant performance across harsh environments. With a 1 kVA rating and copper windings, it delivers efficient power transfer and supports compact, modular panel designs. Low-sound output at 42 dB and indoor-outdoor versatility help reduce space constraints while accelerating project timelines and operational uptime. Its robust construction and Eaton support ecosystem help mitigate risk during long-term asset management.
Product Information
Extended Description
S20N11S01CULS42 Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 59A, 60 Hz, low sound 42 dB, single-phase, 240 V, 480 V, 120/240 V, NONE, 115 °C rise, 1 KVA, indoor-outdoor, 3A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11S01CULS42
UPC
786680053566
Product Length/Depth
5.75 in
Product Height
11.28 in
Product Width
5.99 in
Product Weight
27 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
Low sound equal to 42 dB
Coil material
Copper
Design
EP
Enclosure
NEMA 3R
Frame
59A
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
115 °C rise
Volt ampere rating
1 kVA
Modification 1
Low sound 42 dB
Weathershield
Indoor-Outdoor
Feature: 1 kVA power rating with single-phase operation at 60 Hz. Business Impact: Enables reliable step-down for standard control circuits while keeping footprint compact. Application: Control panels and machine automation in commercial and industrial settings. The transformer delivers predictable voltage transformation with minimal losses, supporting lean panel layouts and easier wiring harnesses. Feature: Copper winding construction. Business Impact: Improves efficiency and thermal performance, reducing I2C-like losses and heat buildup over extended run times. Application: High-duty control circuits where stable voltage and long life are critical for uptime and maintenance cycles. Feature: NEMA 3R enclosure. Business Impact: Provides indoor-outdoor protection against rain, dust, and corrosion, simplifying installation in exposed environments. Application: Outdoor equipment housings and weather-prone industrial environments where reliability matters. Feature: Low sound level (42 dB). Business Impact: Diminishes noise footprint in open panel spaces or noise-sensitive facilities, aiding regulatory compliance and worker comfort. Application: Machinery rooms with close-quarter installations or noise constraints. Feature: 115 °C rise temperature tolerance. Business Impact: Supports continuous operation under elevated ambient temperatures without derating or frequent cooling upgrades. Application: High-heat environments and dense panel configurations. Feature: 1 year warranty (or 18 months from shipment). Business Impact: Provides assurance and predictable service support, reducing long-term ownership risk. Application: Asset management plans and service contracts in warranty windows.
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FAQs
For outdoor installations, the S20N11S01CULS42 uses a NEMA 3R enclosure, offering weather resistance and rain protection. The unit weighs 27 lb and measures 5.99 in wide by 11.28 in tall and 5.75 in deep, enabling relatively straightforward mounting on standard bases. Ensure adequate ventilation, secure mounting, and compliance with local electrical codes when integrating into exterior-rated panels.
The transformer operates at 60 Hz with a single phase and provides 1 kVA of power. Primary voltage is 240 V or 480 V, and secondary voltage is 120/240 V. This setup supports common control circuits and automation devices, enabling safe, reliable voltage transformation in standard industrial panels while minimizing voltage dips and thermal stress during operation.
Yes, the unit is UL Listed, ensuring safety compliance for industrial equipment. It is housed in a NEMA 3R enclosure designed for indoor-outdoor use, which makes it suitable for damp or outdoor environments when installed in compliant panels. The 60 Hz single-phase design further supports conventional control installations in multiple industrial settings.
The transformer is rated for a low sound output of 42 dB, beneficial in space-constrained or noise-sensitive installations. It has a temperature rise rating of 115 °C, supporting reliable operation under higher ambient temperatures and aiding consistent voltage performance without cooling upgrades.
Eaton offers a one-year warranty from installation or eighteen months from shipment, whichever occurs first. This coverage aligns with standard industry practices and helps protect asset value. For service, expect access to Eaton’s support resources and documentation, including specification sheets and catalog updates to assist with ongoing maintenance and parts planning.