Eaton S20L11S37 Encapsulated Transformer - UL Listed
Part Number: S20L11S37
Quick Summary
Eaton S20L11S37 encapsulated transformer delivers reliable power conversion for general distribution in industrial facilities. In rugged spaces with space constraints and the need for dependable, code-compliant power delivery, this unit helps maintain uptime. UL Listed safety certification and a NEMA 3R enclosure provide robust protection for indoor-outdoor operation, ideal for harsh environments. The design supports quick field adjustments with multiple primary taps and flexible input options, reducing project lead times. With 240/480 V primary and 120/240 V secondary ratings, it fits diverse industrial power distribution schemes and supports single-phase installations while delivering consistent voltage transformation and long-term cost efficiency.
Product Information
Extended Description
S20L11S37 Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 300A, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, 2 at -5% FCBN X 4 at -2.5% FCBN, 115 °C rise, 37.5 KVA, indoor-outdoor, 248A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20L11S37
UPC
786680027765
Product Length/Depth
14.06 in
Product Height
28.24 in
Product Width
22.42 in
Product Weight
735 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
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
300A
Tap size
2 at -5% FCBN x 4 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
248A
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
37.5 kVA
Weathershield
Indoor-Outdoor
Feature: 37.5 kVA, single-phase encapsulated transformer with aluminum coil and EP design. Benefit: High reliability and reduced maintenance for critical loads. Application: Control panels, distribution cabinets, and outdoor enclosures in manufacturing lines. Feature: Primary taps at 2 at -5% FCBN and 4 at -2.5% FCBN. Benefit: Precise voltage matching to supply fluctuations, minimizing downstream equipment stress. Application: Facilities with variable incoming voltages or long conductor runs. Feature: Primary voltage 240 V / 480 V; secondary 120/240 V. Benefit: Flexible distribution for diverse control circuits and equipment. Application: Machine control panels, small substations, and panel boards. Feature: NEMA 3R enclosure with Indoor-Outdoor Weathershield. Benefit: Weather-resistant protection enabling outdoor and semi-exposed installations without extra housings. Application: Outdoor cabinets, rooftop enclosures, and rugged plant environments. Feature: UL Listed safety certification and a robust 37.5 kVA rating. Benefit: Compliance-driven procurement and safe operation under continuous loads. Application: Industrial power distribution and equipment racks in demanding facilities. Feature: Weight 735 lb and dimensions 14.06 in L x 22.42 in W x 28.24 in H. Benefit: Clear planning for crane- or forklift-assisted installation and space planning. Application: Facilities with controlled installation footprints and strict clearance requirements. Feature: 60 Hz operation and 2 at -5% / 4 at -2.5% FCBN taps. Benefit: Reliable performance across typical North American power systems with voltage flexibility. Application: Plants relying on stable single-phase power with minor supply variations. Feature: 115 °C rise rating and 248 A wiring connection. Benefit: Clear expectations for thermal performance and wiring compatibility in control panels. Application: Heavy-duty distribution panels and switchgear interfaces. Feature: 25-000 warranty policy (1 year from installation or 18 months from shipment). Benefit: Assurance of service life and support during initial deployment. Application: Procurement planning and service-level commitments for mid-size installations.
Get a Quick Quote for a Eaton S20L11S37
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 S20L11S37?
Enquire Now
FAQs
The S20L11S37 uses a NEMA 3R enclosure suitable for indoor-outdoor installations. Plan for a robust mounting surface and adequate clearances for cooling and wiring. The unit weighs 735 lb and measures 14.06 in by 22.42 in by 28.24 in, so arrange appropriate lifting equipment and access in the electrical room or outdoor cabinet.
This transformer provides two primary taps at -5% FCBN and four taps at -2.5% FCBN to compensate for voltage drops or fluctuations on the incoming supply. Selecting the correct tap minimizes voltage stress on downstream equipment and maintains stable secondary voltage (120/240 V) for critical loads.
Yes. The unit features a NEMA 3R enclosure and Indoor-Outdoor Weathershield, designed for outdoor or semi-exposed deployments while maintaining safety and performance. UL Listed certification further supports compliance in mixed indoor-outdoor installations commonly found in industrial facilities.
Key certifications include UL Listed safety certification. The enclosure is rated NEMA 3R for indoor-outdoor protection, and the transformer is designed for 60 Hz, single-phase operation with a 37.5 kVA rating, supporting reliable industrial power distribution.
The transformer carries Eaton’s warranty policy: one year from installation or 18 months from shipment, whichever occurs first. With a 37.5 kVA rating and rugged enclosure, maintenance needs are typically minimal beyond periodic inspection of connections and thermal performance. The unit’s efficiency and flexible tapping support long-term cost savings in mid-size distribution applications.