Eaton V48M28T75CUNV Totally Enclosed Transformer UL Listed
Part Number: V48M28T75CUNV
Quick Summary
The Eaton V48M28T75CUNV is a three‑phase transformer that provides reliable power distribution by stepping 480 V primary to 208Y/120 V secondary in a compact, totally enclosed non‑ventilated enclosure. This design addresses common space and contamination challenges in tight electrical rooms, reducing cooling requirements and maintenance downtime. The unit is UL Listed for safety and reliability in industrial environments, built with a DT-3 dry-type design and a 150°C rise to support demanding applications. For facilities prioritizing code compliance and long-term uptime, this transformer pairs well with standard industrial power distribution strategies while offering robust copper windings and Eaton’s warranty coverage for peace of mind.
Product Information
Extended Description
V48M28T75CUNV Eaton: General-Purpose Transformer, Dry Type Distribution, DT-3, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 150°C, 75 kVA, Cu windings, Frame: 916AN
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
V48M28T75CUNV
UPC
786685197913
Product Length/Depth
23.42 in
Product Height
46.58 in
Product Width
28.22 in
Product Weight
1061 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
Catalog Notes
Totally enclosed non-ventilated
Coil material
Copper
Design
DT-3
Frame
916AN
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Dry Type Distribution Transformer
Frequency rating
60 Hz
Kva Rating
75 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
150 °C rise
Feature → Business Impact → Application: The V48M28T75CUNV uses copper windings in a dry-type DT-3 configuration, delivering high efficiency with minimal core losses and reduced operating temperatures, which translates to lower energy costs and longer service life for critical loads in manufacturing plants and data centers. This is complemented by a totally enclosed non-ventilated (TENV) enclosure that minimizes dust ingress and moisture exposure, reducing maintenance cycles and extending interval between service calls in harsh environments. The 75 kVA rating supports medium-load distributions across parallel systems, enabling scalable power distribution for expanding facilities without a comprehensive equipment swap. With a 480 V primary and 208Y/120 V secondary, installers gain a versatile asset compatible with common industrial distributions and modern control panels, while the +2.5% and -2.5% taps offer fine voltage regulation for sensitive equipment. The rugged 916AN frame and copper winding construction also facilitate retrofit and vertical mounting in scaffolded or constrained spaces, improving site safety and installation efficiency. The UL Listed certification provides regulatory confidence, aligning with electrical codes and contractor expectations for reliability and quality, while the one-year warranty (or 18 months from shipment) supports total cost of ownership considerations and maintenance budgeting. In practice, engineers see measurable downtime reductions and improved grid stability when deploying the V48M28T75CUNV in controlled distribution rooms, switchgear panels, and equipment rooms needing dependable step-down capabilities without extensive plant downtime.
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FAQs
The V48M28T75CUNV is a three-phase, 75 kVA, 480 V to 208Y/120 V dry-type transformer designed for DT-3 enclosures. Its compact frame (916AN) and standard taps (+2.5% FCAN, -2.5% FCBN) simplify voltage regulation and voltage drop calculations in panel boards, switchgear, and control centers. Ensure clearance per Eaton mounting guidelines and provide adequate access for terminal connections and maintenance.
Key specs include 75 kVA rating, 60 Hz frequency, primary 480 V, secondary 208Y/120 V, three-phase configuration, copper windings, and a 150°C rise. Tap settings are two at +2.5% and four at -2.5%. The unit is UL Listed and designed for dry-type, totally enclosed operation, supporting reliable service in industrial environments.
Yes. The totally enclosed non-ventilated design minimizes dust and moisture ingress, reducing maintenance needs. Copper windings and a robust DT-3 construction withstand demanding conditions, while UL Listing confirms compliance with safety standards. Routine checks should focus on insulation integrity, mounting security, and tap contact condition, with attention to enclosure seals in dusty or humid spaces.
Eaton provides a one-year warranty from installation or eighteen months from shipment, whichever occurs first, reflecting confidence in build quality and reliability. For long-term service, schedule regular inspections, maintain clean vents (where applicable), verify tap connections, and track load profiles to avoid overloading the 75 kVA rating, thereby optimizing lifecycle costs.
The transformer footprint is 23.42 in L, 28.22 in W, 46.58 in H, with an estimated weight of 1061 lb. Plan for forklift-accessible routing, secure mounting to a rigid base, and sufficient clearance for cooling, wiring, and maintenance. The sizeable weight and dimensions should be factored into room layout, ceiling height, and load-bearing capacity of the installation floor.