Eaton V48M28T4516ZZ Transformer - Open core-coil, UL Listed
Part Number: V48M28T4516ZZ
Quick Summary
The Eaton V48M28T4516ZZ transformer provides efficient three-phase power distribution for industrial facilities. For engineers facing rising energy costs, space constraints, and reliability targets, this unit delivers high efficiency without occupying excessive floor area. It also supports fast compliance with DOE 2016 efficiency standards, UL Listed safety, and a rugged NEMA 2 enclosure suitable for damp or dusty environments. With aluminum windings, open core‑and‑coil construction, and selectable taps, installation is straightforward and lifecycle costs are reduced through stable voltage regulation and reduced heat. Applications span 480V delta primary to 208Y/120V secondary systems in data centers, manufacturing floors, and distribution rooms, making it a dependable solution for critical loads.
Product Information
Extended Description
V48M28T4516ZZ Eaton: Eaton Open core-coil ventilated transformer, Fungus proof, AL windings, DOE 2016, NEMA 2, 220°C, 45 kVA, Open core/coil assy, Fl/wall mt uprt, 3-phase, PV: 480V delta, SV: 208Y/120, NEMA ST-20, 2 at +2.5%, 4 at -2.5%, 150°C, 45 kVA
Product Name
Eaton Open core-coil ventilated transformer
Catalog Number
V48M28T4516ZZ
UPC
786680204982
Product Length/Depth
21 in
Product Height
36 in
Product Width
24 in
Product Weight
387 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
DOE2016 Efficient
Certifications
UL Listed
Catalog Notes
10 CFR Part 431 (2016) Efficient
Coil material
Aluminum
Enclosure
NEMA 2
Insulation
220 °C
Mounting
Floor or wall, upright only
Tap size
2 at +2.5%, 4 at -2.5%
Type
Energy-efficient ventilated dry-type transformer
Wiring connection
280B
Efficiency
10 CFR Part 431-2016 (DOE 2016)
Frequency rating
60 Hz
Kva Rating
45 kVA
Phase
Three-phase
Primary voltage
480 V delta
Secondary Voltage
208Y/120 V
Sound Level
NEMA ST-20
Temperature rise
150 °C rise
Volt ampere rating
45 kVA
Voltage rating
480 Vac-208Y/120 Vac
Modification 1
Open core and coil assembly
Special features
Fungus-resistent varnished core and coil
Eaton's high-efficiency dry-type transformers
Eaton's high-efficiency dry-type transformers
Eaton Specification Sheet - V48M28T4516ZZ
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: DOE 2016 efficient dry-type design → Business Impact: Reduces energy losses and operating heat, helping facilities meet regulatory requirements while lowering ongoing utility costs → Application: Ideal for new builds and retrofits in industrial plants and data centers. Feature: UL Listed certification with a NEMA 2 enclosure → Business Impact: Enhances safety, regulatory compliance, and durability in damp or dusty environments → Application: Suitable for manufacturing floors, utility rooms, and harsh plant spaces. Feature: Three-phase 45 kVA rating with 480 V delta primary and 208Y/120 V secondary → Business Impact: Supports significant load distribution with stable voltage regulation and scalable power aging margins → Application: Data centers, process lines, and distribution panels requiring reliable step-down from 480 V to 208/120 V. Feature: Tap changer with 2 at +2.5% and 4 at -2.5% → Business Impact: Provides voltage adaptability to maintain downstream equipment performance across load variations → Application: Critical loads with variable demand, including motors and controls. Feature: Aluminum windings, 220 °C insulation, 150 °C rise, and fungus-resistant varnish → Business Impact: Improves reliability, thermal performance, and longevity in challenging environments → Application: Long-life installations with minimal maintenance in industrial facilities.
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FAQs
The unit is designed for floor or wall mounting in upright orientation with a NEMA 2 enclosure, making it suitable for damp or dusty environments. Plan for 21 inch depth, 24 inch width, and 36 inch height clearance, plus proper ventilation to maximize the open core and coil cooling. Use 280B wiring connections and ensure access to the 2 at +2.5% and 4 at -2.5% taps for field adjustments.
This is a three-phase, 45 kVA transformer with 480 V delta primary and 208Y/120 V secondary. It operates at 60 Hz, features aluminum windings, and offers a voltage tap range of 2 at +2.5% and 4 at -2.5%. It supports 10 CFR Part 431 DOE 2016 efficiency and is UL Listed for safety.
Yes. Its 45 kVA rating, 480 V to 208Y/120 V transformation, and DOE 2016 efficiency make it well-suited for data centers and manufacturing floors that require reliable power distribution with energy savings and strict regulatory compliance.
The unit is UL Listed and DOE 2016 Efficient, with a 10 CFR Part 431 (2016) Efficient designation in catalog notes. The NEMA 2 enclosure adds environmental protection suitable for damp or dusty environments, supporting safe operation in harsh facilities.
Energy efficiency reduces operating costs, while the fungus-resistant varnish and robust insulation extend service life with lower risk of insulation degradation. The open core-coil design facilitates cooling, and the selectable taps accommodate load variations, contributing to stable performance and lower maintenance frequency in active production environments.