Eaton S27N11S05CU Encapsulated Transformer - UL Listed
Part Number: S27N11S05CU
Quick Summary
General-purpose encapsulated transformer from Eaton delivers reliable voltage conversion for industrial control panels and instrumentation in harsh indoor-outdoor environments. Engineers often contend with downtime caused by mismatched transformers, heat buildup, and difficult installation in tight spaces. This unit helps address those pain points with a robust NEMA 3R enclosure, copper windings, and a fixed 277 V primary to 120/240 V secondary configuration. UL Listed certification provides safety compliance across standard industrial applications, while the rugged design supports steady performance in varied environments. With a 5 kVA rating and 60 Hz single-phase operation, it aligns with typical control panel and automation system needs, delivering efficiency, reduced spare parts, and predictable maintenance under Eaton warranty protection.
Product Information
Extended Description
S27N11S05CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 177, 60 Hz, single-phase, 277 V, 120/240 V, NONE, 115 °C rise, 5 KVA, indoor-outdoor, 524A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S27N11S05CU
UPC
786680087929
Product Length/Depth
9.89 in
Product Height
16 in
Product Width
10.38 in
Product Weight
121 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
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
524A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
277 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
5 kVA
Weathershield
Indoor-Outdoor
277 V primary to 120/240 V secondary provides a fixed, straightforward voltage path that reduces wiring complexity and installation time, delivering faster commissioning for industrial control panels and machines. Copper windings in an EP encapsulated design offer high reliability with low leakage, improving overall transformer efficiency and lifespan in demanding environments. The NEMA 3R enclosure supports indoor-outdoor service, enabling flexible mounting options in production floors or exterior equipment pads while maintaining safe operation. The compact footprint (9.89 in L, 16 in H, 10.38 in W) and 121 lb weight underscore robust construction without compromising space in crowded switchgear rooms, aided by the 524A wiring connection for solid, code-compliant terminations. A 5 kVA rating at 60 Hz single-phase drives common automation loads with predictable performance; no taps simplify maintenance and reduce misconfiguration risks. Eaton’s 25-000 warranty policy provides a clear support path and total-cost-of-ownership benefits, while UL Listed certification affirms safety compliance on standard industrial projects.
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FAQs
The S27N11S05CU is a fixed-ratio, single-phase transformer with 277 V primary and 120/240 V secondary, designed for standard control panels. Plan for its 9.89 in L x 16 in H x 10.38 in W footprint and 121 lb weight, and use the 524A wiring connection for secure terminations. Its NEMA 3R enclosure accommodates indoor-outdoor mounting, simplifying site integration and reducing enclosure-related risk.
This unit delivers 5 kVA at 60 Hz in a single-phase configuration, stepping down from 277 V to 120/240 V. Copper windings and EP encapsulation support high reliability and thermal efficiency, with a 115 °C rise rating. There are no taps, so the voltage ratio is fixed, ensuring consistent performance under typical automation loads.
Yes. The transformer features a NEMA 3R enclosure designed for indoor-outdoor service, enabling installation in exposed industrial areas without compromising safety or reliability. Its copper windings, UL Listed certification, and rugged construction make it suitable for machines, distribution panels, and outdoor equipment enclosures in manufacturing and process facilities.
The S27N11S05CU is UL Listed, indicating adherence to recognized safety standards for electrical equipment. While it is designed for robust industrial use, always verify site-specific compliance requirements before deployment. The UL listing supports safe operation in typical plant environments and helps streamline procurement and inspection processes.
The transformer carries Eaton's warranty policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. This coverage reduces maintenance risk and supports TCO planning by limiting early-life repair costs. Coupled with the unit’s rugged enclosure and long-term reliability, the warranty enhances project ROI for control panels and automation deployments.