Eaton V48M31T75ZZ Open-core transformer - UL Listed
Part Number: V48M31T75ZZ
Quick Summary
Eaton V48M31T75ZZ is a dry-type, open-core transformer designed for three-phase distribution in industrial plants. Engineers often battle heat, efficiency losses, and footprint constraints in control panels; this unit delivers 75 kVA with aluminum windings for lighter weight, robust performance, and easier service. UL Listed safety certification supports compliance in demanding environments, while its 480 V primary and 220Y/127 V secondary configuration provides flexible integration with legacy and new equipment. By combining a compact footprint with proven Eaton reliability, this transformer helps reduce installation costs and maintain voltage stability across critical loads, supporting uptime and energy efficiency in manufacturing, data centers, and power distribution cabinets.
Product Information
Extended Description
V48M31T75ZZ Eaton: Eaton Dry type distribution ventilated transformer DT-3C Three-phase 480 DELTA 2 at +2.5% FCAN 4 at -2.5% FCBN 220Y/127V 150°C 75 kVA Aluminum windings CT75C303 280B 60 Hz
Product Name
Eaton Open core-coil ventilated transformer
Catalog Number
V48M31T75ZZ
UPC
786680115028
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 in
Product Weight
472 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
Aluminum
Design
DT-3C
Frame
CT75C303
Tap size
2 at +2.5% FCAN 4 at -2.5% FCBN
Type
Dry type distribution ventilated transformer
Wiring connection
280B
Frequency rating
60 Hz
Kva Rating
75 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
220Y/127 V
Temperature rise
150 °C rise
Feature: Dry-type, open-core ventilated construction. Benefit: Safer indoor operation with reduced fire risk and simplified maintenance, enabling installation in switchgear rooms and control panels without oil containment concerns. Application: Ideal for factory floors, distribution cabinets, and data centers seeking reliable, oil-free power conversion. Feature: 75 kVA rating with 480 V primary and 220Y/127 V secondary. Benefit: Versatile step-down capability supports multiple downstream circuits and minimizes equipment stacking. Application: Suitable for machine centers and panel boards in industrial plants. Feature: Aluminum windings in CT75C303 frame. Benefit: Weight reduction improves handling, transport, and installation cost while maintaining electrical performance. Application: Retrofit projects and new builds where ease of installation matters. Feature: Tap changer with 2 at +2.5% FCAN and 4 at -2.5% FCBN. Benefit: Improved voltage regulation under line fluctuations, reducing downstream equipment stress. Application: Critical loads with tight voltage tolerance in manufacturing lines. Feature: 280B wiring and 60 Hz operation. Benefit: Streamlined wiring harness integration and compatibility with standard US power systems. Application: Control panels and distribution cabinets.
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FAQs
The V48M31T75ZZ is designed for Eaton DT-3C frames and CT75C303 configurations, using 280B wiring. When planning installation, verify available ventilation in the cabinet, ensure adequate clearance for cooling, and confirm mounting points match the frame. The unit weighs 472 lb, so include proper lifting equipment and secure anchoring to maintain vibration resistance in operation.
Key specs include a 75 kVA rating, 60 Hz frequency, 480 V primary (delta) and 220Y/127 V secondary, and a 150 °C rise rating. It uses aluminum windings and is UL Listed. The device supports two taps at +2.5% and four taps at -2.5% to aid voltage regulation, with a CT75C303 frame and 280B wiring for straightforward installation.
Yes. Its dry-type, ventilated design minimizes fire risk and simplifies indoor installation in data centers and manufacturing environments. The 75 kVA rating provides ample headroom for distribution needs, and the +/− tap changer helps stabilize voltage under fluctuating mains. The UL Listed certification supports compliance in regulated facilities, while aluminum windings offer lighter weight for easier deployment.
The transformer carries UL Listed certification, which confirms conformity with recognized safety standards for electrical equipment. This enhances compliance during audits and simplifies acceptance within regulated industrial facilities. For projects requiring additional certifications, consult the Eaton specification sheet for broader compliance information and integration guidance.
With a oil-free, dry-type design, maintenance is minimal and typically includes periodic inspection of cooling paths and connections. The unit delivers reliability in continuous operation with a 75 kVA rating, reducing downtime and replacement costs. A one-year warranty from installation or 18 months from shipment provides early protection, while UL Listed certification supports ongoing regulatory compliance.