Eaton P48G28T21CUB Mini-Power center - NEMA 3R
Part Number: P48G28T21CUB
Quick Summary
The Eaton Mini-Power center provides compact, reliable transformer power for industrial panel mains. For panel builders facing space constraints and downtime, a compact, efficient solution matters. UL Listed, CSA Certified, and IEEE Certified marks back safety and performance, while a NEMA 3R enclosure supports rugged indoor-outdoor installation. With all-copper windings and compatibility with BAB bolt-on breakers, it streamlines installation and reduces field retrofits. Its 22.5 kVA rating, 480 V primary and 208Y/120 V secondary, 60 Hz operation, and 115 °C rise ensure dependable power for industrial controls. In short, this mini-power center delivers efficiency, compliance, and cost-of-ownership advantages for manufacturing and process environments.
Product Information
Extended Description
P48G28T21CUB Eaton: Eaton Mini-Power center, mini-power center, copper, NEMA 3R, 290A, 60 Hz, three-phase, 480 V, 208Y/120 V, 2 at -5% FCBN, 115 °C rise, 22.5 KVA, indoor-outdoor, 103A21K
Product Name
Eaton Mini-Power center
Catalog Number
P48G28T21CUB
UPC
786680034763
Product Length/Depth
13.63 in
Product Height
40.88 in
Product Width
29.88 in
Product Weight
625 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.
Compliances
NEMA Compliant
Certifications
UL Listed CSA Certified ANSI IEEE Certified
Catalog Notes
All copper construction (coil and interior) and accepts bolt-on branch breakers from the BAB family
Coil material
Copper
Enclosure
NEMA 3R
Frame
290A
Tap size
2 at -5% FCBN
Type
Mini-power center
Wiring connection
103A21K
Frequency rating
60 Hz
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
115 °C rise
Volt ampere rating
22.5 kVA
Weathershield
Indoor-Outdoor
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - P48G28T21CUB
Feature → Copper windings and all-copper construction provide low impedance and robust thermal performance, which reduces heat rise and improves long-term reliability. Business Impact → Lower operating temperatures translate to higher efficiency and longer service life, reducing maintenance costs for power distribution in machine controls and panel assemblies. Application → Ideal for compact control panels in manufacturing lines where space is at a premium and performance must remain consistent under load. Feature → NEMA 3R enclosure design enables indoor-outdoor installation with weather resistance. Business Impact → You can deploy this center in harsh environments or exterior-mounted panels without additional enclosures or sealing steps, cutting installation time. Application → Suitable for outdoor machine rooms, weather-exposed substations, and mixed-use facilities requiring dependable protection. Feature → 22.5 kVA three-phase transformer with 480 V primary and 208Y/120 V secondary at 60 Hz. Business Impact → Supports diverse industrial loads with scalable power distribution, reducing the need for multiple step-down devices. Application → Fits panel boards and process lines that demand reliable, transformer-based power for control circuits. Feature → 2 at -5% FCBN tap capability and copper windings improve voltage regulation and durability. Business Impact → Tighter voltage control under load improves equipment performance and protects sensitive electronics, lowering nuisance trips and failures. Application → Critical in applications with variable input voltage or long feeder runs. Feature → Compatibility with BAB bolt-on breakers and all-copper interior simplifies installation and future upgrades. Business Impact → Faster commissioning and easy field upgrades minimize downtime and extend the life of the power distribution system. Application → Especially beneficial for OEMs and panel builders prioritizing flexibility and scalable protection. Feature → Industry-standard certifications (UL Listed, CSA Certified, IEEE Certified) and NEMA 3R compliance support regulatory alignment. Business Impact → Reduces compliance risk while facilitating procurement and maintenance planning. Application → Relevant for regulated manufacturing sectors and facilities seeking proven reliability and safety.
Get a Quick Quote for a Eaton P48G28T21CUB
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton P48G28T21CUB?
Enquire Now
FAQs
The P48G28T21CUB is designed to accept bolt-on BAB family breakers, simplifying field upgrades and future protection schemes. It features copper windings and a NEMA 3R enclosure, enabling outdoor or indoor-outdoor installations. Plan for a robust mounting surface, ensure clearance for the 29.88 in width and 40.88 in height, and route wiring via the 103A21K connection points for clean, code-compliant, and maintainable panels.
Key ratings include 22.5 kVA, three-phase 60 Hz operation, primary 480 V and secondary 208Y/120 V, with a 115 °C rise. This combination supports medium-to-large control circuits and machine drives, providing stable isolation and voltage transformation for sensitive controls and motor starters within a single compact unit.
Yes. The enclosure is NEMA 3R rated, designed for indoor-outdoor use, and the unit carries weather-resistant construction suitable for exterior panel installations or semi-exposed environments. This reduces the need for additional external housings and simplifies outdoor power distribution for industrial applications.
The transformer center is UL Listed, CSA Certified, and IEEE/ANSI certified, with NEMA 3R compliance. These certifications help ensure safety, reliability, and compatibility with common electrical codes, easing procurement and maintenance planning for regulated facilities.
Eaton provides a one-year warranty from installation or eighteen months from shipment (whichever occurs first) under policy 25-000. This, combined with durable copper construction and modular compatibility with BAB breakers, supports reduced maintenance costs and lower total cost of ownership over the product’s life.