Eaton S20L11S37S64X Encapsulated transformer - NEMA 4X
Part Number: S20L11S37S64X
Quick Summary
Eaton S20L11S37S64X encapsulated transformer is a single‑phase power isolation device designed for indoor control panels and light industrial setups. Engineers often battle moisture ingress, corrosion, and space limitations in harsh environments; this unit’s rugged enclosure addresses those pain points. Note on certifications: official certifications such as CE, SIL, and IP ratings depend on configuration; consult Eaton for the exact compliance package. The product supports indoor-outdoor operation and, with 316 stainless options, meets high levels of corrosion protection. By combining a 37.5 kVA rating with aluminum windings, it enables compact, reliable power conversion that reduces downtime and lifecycle costs across automation projects.
Product Information
Extended Description
S20L11S37S64X Eaton: General-purpose encapsulated transformer EP Single-phase 240 x 480V 2 at -5% FCBN x 4 at -2.5% FCBN 120/240V 150°C 37.5 kVA Aluminum windings 322 248A Indoor-Outdoor 60 Hz NEMA 4X
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20L11S37S64X
UPC
786680116476
Product Length/Depth
16.39 in
Product Height
28.55 in
Product Width
22.45 in
Product Weight
720 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
Contact Manufacturer
Catalog Notes
NEMA 4X Grade 316 stainless steel enclosure.
Coil material
Aluminum
Design
EP
Enclosure
NEMA 4X
Frame
322
Tap size
2 at -5% FCBN x 4 at -2.5% FCBN
Type
General-purpose encapsulated transformer
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Volt ampere rating
37.5 kVA
Weathershield
Indoor-Outdoor
Feature: General-purpose encapsulated transformer with a 37.5 kVA rating and 60 Hz single‑phase operation. Benefit: Delivers reliable voltage transformation in a compact footprint, minimizing panel space while supporting scalable automation deployments. Application: Control panels and machine enclosures in light industrial facilities. Feature: NEMA 4X enclosure with indoor-outdoor capability and corrosion-resistant options. Benefit: Extends service life in wet or washdown environments, reducing maintenance intervals and replacing failed units more cost-effectively. Application: Outdoor substations, washdown areas, and harsh factory floors. Feature: Aluminum windings and robust coil construction. Benefit: Lower cost with excellent conductivity and thermal performance, enabling efficient operation under peak loads. Application: High transient loads in manufacturing lines. Feature: Tap size 2 at -5% FCBN x 4 at -2.5% FCBN. Benefit: Voltage flexibility to accommodate slight input variances and protect sensitive downstream equipment. Application: Facilities with fluctuating supply voltages. Feature: Primary 240/480 V and secondary 120/240 V ratings, 60 Hz. Benefit: Wide compatibility with common industrial power distributions, simplifying integration. Application: General-purpose power distribution across multiple control circuits and loads.
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FAQs
For compatibility, verify the primary supply is within 240/480 V and the secondary output matches 120/240 V needs. Mount the unit on a level, accessible surface with adequate clearance per NEMA 4X enclosure guidelines and ensure proper cooling airflow. Use proper terminations rated for the aluminum windings and observe the 60 Hz rating to avoid saturation during peak loads.
Key specs include a 37.5 kVA VA rating, primary voltages of 240/480 V, secondary voltages 120/240 V, and 60 Hz operation. Aluminum windings support efficient conduction, while the tap set of 2 at -5% and 4 at -2.5% FCBN provides voltage flexibility. These factors influence load handling, voltage regulation, and startup performance in automation panels.
Yes, its NEMA 4X enclosure supports indoor-outdoor use and corrosion resistance, making it suitable for damp or washdown environments. Consider optional 316 stainless steel enclosures for additional corrosion protection in aggressive settings. Ensure installation proximity to heat sources is minimized to maintain thermal performance and longevity.
Certifications are configuration dependent. The catalog notes indicate a NEMA 4X enclosure and “Contact Manufacturer” for certifications, with CE, IP, and SIL qualifications available per configuration. Confirm exact compliance with Eaton prior to purchase to meet your facility’s regulatory and safety requirements.
Maintenance benefits come from rugged enclosure protection reducing moisture ingress and corrosion-related failures, and from aluminum windings which typically require less upkeep than copper windings in some applications. ROI improves through reduced downtime, longer service intervals, and compatibility with standard 240/480 V distributions, enabling easier integration and lower lifecycle costs.