Eaton S25D12S03CU General-Purpose Transformer - UL Listed
Part Number: S25D12S03CU
Quick Summary
General-Purpose Transformer is a reliable power conversion solution for control panels and industrial equipment. Engineers often struggle with voltage mismatches, moisture exposure, and installation complexity in harsh environments. This model features UL Listed safety certification and a rugged NEMA 3R enclosure for indoor-outdoor service, supporting durable operation in real-world facilities. The copper-wound coil and 60 Hz, 220 V to 120 V ratings deliver efficient, stable power to control circuits, while 3 kVA capacity supports common automation loads. With taps for ±2.5% regulation and a compact footprint, it translates to lower energy waste, reduced downtime, and simplified panel design for modern industrial environments.
Product Information
Extended Description
S25D12S03CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 176, 60 Hz, single-phase, 220 V, 120 V, 2 at +2.5% FCAN, 2 at -2.5% FCBN, 115 °C rise, 3 KVA, indoor-outdoor, 536A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S25D12S03CU
UPC
786680075360
Product Length/Depth
8 in
Product Height
14.25 in
Product Width
7.69 in
Product Weight
75 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
176
Tap size
2 at +2.5% FCAN, 2 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
536A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
220 V
Secondary Voltage
120 V
Temperature rise
115 °C rise
Volt ampere rating
3 kVA
Weathershield
Indoor-Outdoor
Feature → Business Impact → Application: The EP encapsulated design with copper windings provides superior thermal performance and durability, reducing insulation degradation and extending service life in vibration-prone control panels. This translates to lower maintenance costs and improved uptime in manufacturing lines where reliability is critical. Feature → Application: The NEMA 3R enclosure enables indoor-outdoor installation, protecting the transformer from dust, moisture, and weathering while simplifying outdoor wiring in switching gear and outdoor panels. This supports safer, code-compliant installations in warehouses or yard environments. Feature → Application: A 3 kVA single-phase rating with 220 V primary and 120 V secondary supports diverse automation loads, from PLCs to motor starters, delivering precise voltage to sensitive equipment with minimal ripple. Feature → Application: Tap settings of 2 at +2.5% FCAN and 2 at -2.5% FCBN provide built-in voltage regulation, helping to maintain stable loads and reduce reset events in control circuits. Feature → Application: Copper coil construction and copper windings improve efficiency and thermal reliability, delivering measurable energy savings over time and reducing heat-related performance losses in high-cycle applications. Feature → Application: The transformer’s 176 frame, compact dimensions (8 in L x 7.69 in W x 14.25 in H) and 75 lb weight streamline mounting in tight panels, enabling easier retrofits and faster installation. Feature → Application: UL Listed certification affirms safety compliance for industrial environments, while the indoor-outdoor capability and weather-resistant design support versatile deployment across multiple facilities. Sustainability and ROI considerations are reinforced by a long service life and predictable maintenance needs in capital-intensive plants.
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FAQs
Plan for a compact footprint with 8 in length, 7.69 in width, and 14.25 in height in a suitable panel. Use the NEMA 3R enclosure for indoor-outdoor locations, ensure proper clearance for the 75 lb unit, and follow manufacturer wiring practices for copper windings and 2 × taps (+2.5% FCAN, -2.5% FCBN).
Primary voltage 220 V, secondary voltage 120 V, single-phase, frequency 60 Hz, VA rating 3 kVA (3,000 VA). Copper coil construction, enclosure rated NEMA 3R, with two positive and two negative voltage taps for regulation.
Yes. It’s a general-purpose encapsulated transformer designed for control circuits, with a compact frame, rugged indoor-outdoor enclosure, and reliable copper windings. It supports typical PLC and actuator loads, with voltage regulation via taps to maintain stable outputs in varying line conditions.
The transformer is UL Listed, confirming safety compliance for industrial use. It features a weather-ready indoor-outdoor enclosure (NEMA 3R) for versatile deployment in harsh environments.
The warranty follows Eaton’s policy: one year from installation or eighteen months from shipment, whichever occurs first, providing protection against manufacturing defects and ensuring responsive support for commissioning and ongoing operation.