Eaton S40N14S05CE General-Purpose Transformer - UL Listed
Part Number: S40N14S05CE
Quick Summary
Eaton general-purpose encapsulated transformer powers control panels and industrial equipment with a dependable low-voltage supply. This single-phase, 5 kVA unit is designed for compact spaces and challenging environments, delivering a stable 110/220 V secondary from 190–440 V primaries. A common pain point for engineers is sourcing a rugged, easy-to-install transformer that performs reliably indoors and outdoors without sacrificing performance. The S40N14S05CE meets that need with a NEMA 3R enclosure and aluminum windings, providing durable operation under wide temperature and humidity swings. It carries UL Listed and CE Marked certifications, assuring compliance with safety and performance standards. By standardizing on this Eaton transformer, you gain predictable installation, fewer part variants, and a solid foundation for automation ROI across panels, machines, and service equipment.
Product Information
Extended Description
S40N14S05CE Eaton: Eaton, general purpose encapsulated transformer, ep, single-phase, pv: 190/200/208/220 x 380/400/416/440v, taps: none, sv: 110/220v, 115°c, 5 kva, al windings, frame: 178, indoor-outdoor.
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S40N14S05CE
UPC
786680020308
Product Length/Depth
9.89 in
Product Height
16 in
Product Width
10.38 in
Product Weight
136 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
CE Marked
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
178
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
538A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
190 V, 200 V, 208 V, 220 V, 380 V, 400 V, 416 V, 440 V
Secondary Voltage
110/220 V
Temperature rise
115 °C rise
Volt ampere rating
5 kVA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S40N14S05CE
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: EP encapsulated construction with aluminum windings provides robust moisture resistance and long-term reliability. Business Impact: Reduces field failures and maintenance costs while extending service life in mixed environments. Application: Suitable for indoor-outdoor control cabinets and rugged factory floors. Feature: 5 kVA power rating with single-phase operation at 60 Hz enables straightforward integration with a wide range of automation loads. Business Impact: Supports PLCs, relays, and motor-control circuits without multiple transformers, lowering spares and installation time. Application: Machine tools, process controllers, and utility panels. Feature: Primary voltage range of 190–440 V and secondary 110/220 V provide flexible commissioning from common power systems. Business Impact: Simplifies panel design and reduces procurement complexity by accommodating diverse mains voltages. Application: Powering instrumentation and signal conditioning in mixed-voltage environments. Feature: Enclosure rated NEMA 3R with indoor-outdoor capability and Weathershield designation. Business Impact: Enables outside-the-box placement in outdoor rooms or weather-protected areas, reducing space and cooling demands. Application: Outdoor equipment yards and protected outdoor enclosures in manufacturing plants. Feature: Frame 178 and 538A wiring connection support straightforward mounting and wiring harness integration. Business Impact: Streamlines installation with compatible mounting footprints and connector schemes, cutting installation hours. Application: New builds and retrofits in modern control panels. Feature: UL Listed and CE Marked with a one-year warranty (or 18 months from shipment). Business Impact: Improves procurement confidence and regulatory compliance while safeguarding investment. Application: Compliance-driven projects and long-term maintenance planning.
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FAQs
Install in a compliant enclosure with NEMA 3R rating and ensure close but accessible wiring. Connect the primary to 190–440 V supply and the secondary to 110/220 V loads using the 538A wiring connection. Mount the unit on a stable surface using the 178 frame. Verify clearance for heat dissipation and perform a final insulation check before commissioning.
The unit is a 5 kVA, single-phase transformer operating at 60 Hz. Primary voltages span 190 to 440 V, with a 110/220 V secondary. It features aluminum windings, an enclosure rated for indoor-outdoor use (NEMA 3R), and a maximum temperature rise of 115 °C. Wiring is via 538A, and the frame size is 178.
Yes. It is designed with an indoor-outdoor capability and a NEMA 3R enclosure profile, along with Weathershield for weather resistance. This makes it appropriate for outdoor or partially protected environments, provided it remains within its rated temperature and humidity parameters and is installed per Eaton guidelines.
The transformer is UL Listed and CE Marked, indicating compliance with safety and performance standards across North America and Europe. These certifications help streamline procurement for regulated facilities, support risk management, and satisfy supplier qualification requirements during audits and project approvals.
By combining a rugged encapsulated design with a flexible 190–440 V primary and 110/220 V secondary, it reduces the need for multiple transformers. The 5 kVA rating supports common automation loads, while UL/CE compliance and a one-year warranty lower risk, maintenance costs, and total cost of ownership over the system’s lifecycle.