Eaton S25N54S01CU General-Purpose Encapsulated Transformer - UL Listed
Part Number: S25N54S01CU
Quick Summary
Eaton general-purpose encapsulated transformer powers control panels and industrial equipment with reliable single-phase power. The design addresses common challenges like weather exposure, mounting space, and wiring clarity in harsh environments. This model is UL Listed and housed in a NEMA 3R enclosure, enabling indoor-outdoor installation without extra protection. It supports a 220 V primary and 127/254 V secondary at 60 Hz, delivering 1 kVA with a 115 °C rise to tolerate peak loads. For buyers, certifications and rugged construction translate to safer operation, easier compliance, and reduced field repairs, while Eaton’s warranty framework supports long-term service and predictable total cost of ownership.
Product Information
Extended Description
S25N54S01CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 59A, 60 Hz, single-phase, 220 V, 127/254 V, NONE, 115 °C rise, 1 KVA, indoor-outdoor, 26F
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S25N54S01CU
UPC
786680071515
Product Length/Depth
5.75 in
Product Height
11.28 in
Product Width
5.99 in
Product Weight
0.001 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
59A
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
26F
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
220 V
Secondary Voltage
127/254 V
Temperature rise
115 °C rise
Volt ampere rating
1 kVA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - S25N54S01CU
Selling Policy 25-000 - Distribution and Control Products and Services
Copper windings provide low resistance and durable performance. This improves efficiency, minimizes heat buildup, and extends transformer life in continuous operation. Ideal for control panels, PLC cabinets, and automation racks where consistent voltage is essential. The 1 kVA single-phase rating supports typical control circuits, delivering headroom for startup surges and reducing the need for oversizing in manufacturing lines, packaging equipment, and conveyors. The 60 Hz operation with 220 V primary and 127/254 V secondary aligns with US electrical standards while offering compatibility for devices across regions with 127/254 V requirements. The NEMA 3R enclosure enables indoor-outdoor installation, simplifying site layouts and reducing the need for additional weather protection, which lowers installation costs and field risk. UL Listed certification enhances safety and regulatory acceptance, while the included Weathershield indoor-outdoor capability helps minimize maintenance and downtime in dynamic environments. The Eaton warranty policy 25-000 provides confidence with a one-year or eighteen-month window from shipment, ensuring support during early-life operation.
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FAQs
Install the S25N54S01CU in a location that supports its 5.75 in x 5.99 in footprint and 11.28 in height, inside its NEMA 3R enclosure. Ensure UL-listed mounting, proper clearance, and ventilation for a 1 kVA, single-phase, 60 Hz transformer. Use copper winding connections (26F) and confirm 220 V primary and 127/254 V secondary compatibility with your panel.
Yes. Its NEMA 3R enclosure and Indoor-Outdoor rating make it suitable for both indoor and outdoor control panels. The 60 Hz operation and copper windings support reliable voltage transformation for automation rack loads, while the UL Listed certification helps with acceptance testing and regulatory compliance.
Key specs include 1 kVA rating, single-phase, 60 Hz, 220 V primary, 127/254 V secondary, and a 115 °C temperature rise. It features copper windings, a 59A frame, and an indoor-outdoor Weathershield rating (NEMA 3R), with 26F wiring connections to support control circuits and automation devices in harsh environments.
Official documents are available from Eaton: the Specification Sheet for S25N54S01CU and transformer catalog PDFs. Also review Eaton’s Selling Policy 25-000 for warranty terms. These resources provide installation guidelines, performance data, and compliance details to support procurement and commissioning.
Warranty follows Eaton policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. This policy, along with UL Listed certification, supports maintenance planning and reduces risk of unexpected repair costs during the product lifecycle.