Eaton V48M31T30ZZ Open-core ventilated transformer - UL
Part Number: V48M31T30ZZ
Quick Summary
Eaton Open-core ventilated transformer distributes 480 V to 220Y/127 V loads in industrial settings. When loads swing or ambient temperatures rise, voltage can dip and overheating risk increases, challenging uptime. UL Listed safety certification accompanies its open-core, dry-type DT-3C design, while aluminum windings help deliver lightweight, cost-efficient operation. The unit is designed for easy installation within distribution panels and aligns with standard frame CT30C303 and wiring code 280B, delivering reliable, low-maintenance power for manufacturing, mining, and data-center support.
Product Information
Extended Description
V48M31T30ZZ 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 30 kVA Aluminum windings 910C 280B 60 Hz
Product Name
Eaton Open core-coil ventilated transformer
Catalog Number
V48M31T30ZZ
UPC
786680113949
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 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
Aluminum
Design
DT-3C
Frame
CT30C303
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
30 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
220Y/127 V
Temperature rise
150 °C rise
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - V48M31T30ZZ
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: Open-core ventilated dry-type design enables robust cooling and safe indoor operation. Business Impact: Enhances reliability and reduces overheating incidents, extending transformer life and minimizing unplanned downtime. Application: Ideal for indoor power distribution in manufacturing floors and data centers, especially where space and safety are priorities. Long-tail keywords: open-core transformer, dry-type distribution transformer, ventilated transformer, indoor power distribution. Feature: Aluminum windings offer corrosion resistance and weight savings. Business Impact: Reduces installation effort and lifecycle cost while maintaining efficient current handling. Application: Suitable for modular switchgear and panel board applications with frequent maintenance cycles. Feature: 30 kVA rating and three-phase 480 V input to 220Y/127 V secondary. Business Impact: Supports scalable load profiles with precise voltage transformation, improving downstream equipment performance. Application: Common in industrial plants and distribution panels. Feature: Tap changer 2 at +2.5% FCAN and 4 at -2.5% FCBN. Business Impact: Allows voltage regulation to compensate for line drop and load variations, reducing equipment stress. Application: Critical loads and long feeders. Feature: Frame CT30C303 and 280B wiring connection. Business Impact: Facilitates straightforward installation and stable, repeatable connections. Application: Standardized in Eaton DT-3C configuration for turnkey integration. Feature: UL Listed certification and Eaton warranty policy. Business Impact: Ensures safety compliance and post-sale support, lowering risk for procurement and facilities teams. Application: Compliance in regulated environments and warranty-covered deployments.
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FAQs
The V48M31T30ZZ is designed for indoor distribution panel installations and uses the CT30C303 frame with a 280B winding connection for straightforward mounting. It fits standard three-phase panel boards and aligns with Eaton DT-3C configurations, enabling simple bolt-down mounting and clean wiring runs. Verify clearance for ventilation and confirm bus bar clearances in your panel design.
Key specifications include a 30 kVA rating, three-phase configuration, primary voltage of 480 V, secondary voltage of 220Y/127 V, and a 60 Hz frequency. Temperature rise is rated at 150 °C. Tap changers are 2 taps at +2.5% FCAN and 4 taps at -2.5% FCBN. Winding material is aluminum, and the winding connection is 280B.
Yes. Its dry-type, ventilated design reduces fire risk and suits indoor spaces like data centers and manufacturing environments. The UL Listed certification provides safety assurance, and the 60 Hz three-phase 30 kVA rating supports reliable distribution to critical loads. The aluminum windings offer a balance of performance and cost, with straightforward installation in standard distribution panels.
The V48M31T30ZZ is UL Listed, a widely recognized safety certification for electrical equipment, which helps meet regulatory requirements for indoor electrical distribution. This certification supports smoother procurement processes, aligns with common fire and electrical safety standards, and complements Eaton’s warranty policy for risk mitigation during deployment.
The product is supported by Eaton’s warranty policy, offering one year from installation or eighteen months from shipment—whichever comes first. Maintenance of this dry-type transformer is typically low, thanks to solid insulation and cooling design. Regular inspection of ventilation, winding connections (280B), and tap changer operation will help sustain performance and extend service life.