Eaton S48M11B25CU General-Purpose Transformer - UL Listed
Part Number: S48M11B25CU
Quick Summary
Eaton S48M11B25CU is a general-purpose encapsulated transformer for indoor and outdoor power distribution. Facilities often struggle with space constraints, weather exposure, and code compliance when integrating power conversion equipment into control panels. UL Listed certification, a NEMA 3R enclosure, and an 80 °C rise rating ensure safe, reliable operation across varied environments. Designed for control power and panel integration, it supports standard 480 V inputs and 120/240 V outputs while aligning with common square-dimension enclosures and installation practices. By combining rugged construction with efficient copper windings, this transformer helps reduce downtime, optimize space, and lower total cost of ownership for industrial facilities. It also pairs with Eaton power management solutions to streamline procurement and maintenance.
Product Information
Extended Description
S48M11B25CU Eaton: Eaton General purpose encapsulated transformer, EP, copper, NEMA 3R, 132, 60 Hz, single-phase, 480 V, 120/240 V, 2 at +2.5% FCAN, 4 at -2.5% FCBN, 80 °C rise, 25 KVA, indoor-outdoor, 83A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S48M11B25CU
UPC
786680097584
Product Length/Depth
13.59 in
Product Height
20.67 in
Product Width
19.02 in
Product Weight
250 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
132
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
83A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
480 V
Secondary Voltage
120/240 V
Temperature rise
80 °C rise
Volt ampere rating
25 kVA
Weathershield
Indoor-Outdoor
Feature: Copper windings and encapsulated EP design deliver superior thermal performance and low insulating losses. Business Impact: Higher efficiency, reduced energy cost, and extended service life under continuous duty. Application: Suitable for control cabinets and motor-start circuits where compact, reliable transformers are required. Feature: NEMA 3R enclosure enables indoor-outdoor installation and weather resistance. Business Impact: Lower installation complexity and fewer enclosure-related failures, reducing downtime and maintenance costs. Application: Outdoor equipment pads, building facades, and wet/dust-prone environments that demand rugged protection. Feature: Tap changer availability with 2 taps at +2.5% FCAN and 4 taps at -2.5% FCBN improves voltage regulation under load drift. Business Impact: Stabilized secondary voltage, improved performance of sensitive controls, and fewer nuisance trips. Application: Panels serving motors, sensors, and PLC input networks where voltage consistency matters. Feature: 60 Hz, single-phase, 480 V primary to 120/240 V secondary, 25 kVA rating ensures standard industrial compatibility. Business Impact: Seamless integration with common plant power rails and control circuits; predictable thermal and electrical loading. Application: Manufacturing lines, processing equipment, and facility distribution rooms. Feature: Copper and EP design with 80 °C rise rating and UL Listed certification support compliance and reliability. Business Impact: Meets safety standards while delivering dependable operation in diverse climates. Application: Industrial facilities seeking code-conformant power conversion with long-term warranty support. Feature: Dimensions and weight (13.59 in L x 19.02 in W x 20.67 in H; 250 lb) inform mounting and space planning. Business Impact: Simplified installation planning and safer handling during retrofit projects. Application: Retrofit and new builds where footprint, weight, and mounting clearances are critical.
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FAQs
The S48M11B25CU uses an indoor-outdoor rated NEMA 3R enclosure, allowing outdoor mounting and service in weather-exposed locations. This enclosure protects windings and connections from moisture and debris, while UL Listed compliance supports panel-mounted deployments in industrial settings. Ensure mounting clearances match the 13.59 in L by 19.02 in W footprint and 20.67 in height, with a 250 lb weight for weight and space planning.
Primary voltage is 480 V and the secondary voltage is 120/240 V. The transformer is rated at 25 kVA, suitable for medium-load control circuits and distribution to panel-mounted devices. With a 60 Hz frequency and single-phase configuration, it integrates smoothly into standard plant power systems and control cabinets.
This transformer is UL Listed and features a NEMA 3R enclosure, suitable for indoor-outdoor use. The 80 °C rise rating indicates heat tolerance under continuous operation. These certifications and ratings support compliance with many electrical codes and industrial safety requirements while enabling outdoor installations.
Plan for a footprint of approximately 13.59 in by 19.02 in with a height of 20.67 in and a weight around 250 lb. Copper windings and encapsulated EP construction simplify mounting and reduce corrosion risks. The 2 at +2.5% and 4 at -2.5% taps aid voltage regulation under loading, reducing the need for additional regulation equipment.
The product carries Eaton’s warranty policy: one year from installation or eighteen months from shipment, whichever occurs first. This coverage, combined with UL Listed safety and robust NEMA 3R protection, supports lower lifecycle costs and predictable maintenance planning for industrial facilities.