Eaton S38M11S05CU Transformer - UL Listed, 5 kVA
Part Number: S38M11S05CU
Quick Summary
Eaton S38M11S05CU general-purpose encapsulated transformer delivers reliable power conditioning for industrial control panels and compact machinery. When power quality matters, voltage dips and heat can derail uptime; this unit’s rugged copper-wound design helps minimize disruption in busy environments. With UL Listed certification and a durable NEMA 3R enclosure, it stands up to demanding indoor-outdoor applications, while straightforward installation supports faster commissioning. Built for industrial automation and machine building, it pairs a 380 V primary with 120/240 V secondary to simplify panel design and procurement for OEMs and integrators.
Product Information
Extended Description
S38M11S05CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 177, 60 Hz, single-phase, 380 V, 120/240 V, 2 at +2.5% FCAN, 4 at -2.5% FCBN, 115 °C rise, 5 KVA, indoor-outdoor, 83D
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S38M11S05CU
UPC
786680060557
Product Length/Depth
9.89 in
Product Height
16 in
Product Width
10.38 in
Product Weight
124 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
Copper
Design
EP
Enclosure
NEMA 3R
Frame
177
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
83D
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
380 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
5 kVA
Weathershield
Indoor-Outdoor
Copper-wound encapsulation delivers lower resistance and improved thermal performance, reducing stray losses and extending transformer life. This 5 kVA, single-phase unit supports consistent voltage output under fluctuating loads, enabling tighter control of sensitive equipment in control panels. With a 380 V primary and 120/240 V secondary, it aligns with common industrial power architectures, easing equipment compatibility and reducing transformer inventory for manufacturers. The NEMA 3R indoor-outdoor enclosure provides rugged protection against dust, moisture, and environmental exposure, lowering maintenance costs and enabling outdoor siting near critical equipment. Tap changers at +2.5% and -2.5% offer voltage regulation to compensate line drops, reducing voltage-related wear and improving performance in variable supply conditions. The compact 177 frame, 83D wiring, and 124 lb weight simplify installation, retrofit projects, and OEM integration, supporting fast deployment and predictable procurement. A robust warranty and UL Listed certification further minimize risk across asset life cycles and maintenance planning.
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FAQs
For a secure installation, place the S38M11S05CU on a level, vibration-minimized surface within a controlled environment or approved outdoor location. Respect weight considerations (approximately 124 lb) and ensure proper mounting using the 177 frame footprint. Plan for the 83D wiring connection and accessible clearance for taps and service access to simplify future maintenance.
The 5 kVA rating supports moderate power conditioning for control panels and small automation loads with tight voltage regulation. The dual-tap capability (+2.5% and -2.5%) allows compensation for line drops or rises, stabilizing secondary voltage at 120/240 V and reducing nuisance tripping or equipment wear in fluctuating supply conditions.
Yes. The S38M11S05CU uses a NEMA 3R enclosure designed for indoor-outdoor service and a copper-wound EP design for reliability. Its indoor-outdoor rating supports siting near equipment outdoors or in damp factory environments, while the UL Listed certification provides regulatory assurance for fielded installations.
This transformer is UL Listed, confirming compliance with safety standards for electrical equipment. It features a rugged enclosure suitable for indoor-outdoor use (NEMA 3R) and is designed to operate with standard 60 Hz power systems. The combination supports regulatory alignment for most industrial control projects and equipment cabinets.
Expect reduced downtime from improved voltage stability and fewer voltage-related faults, thanks to copper windings and precise taps. The rugged enclosure minimizes maintenance needs in harsh environments, while the 1-year warranty (or 18 months from shipment) provides early-life protection. Regular visual inspections and insulation checks are typically sufficient for long service life in automation applications.