Eaton V48M28T45EEZZ Open-core ventilated transformer - NEMA TP-1 Compliant
Part Number: V48M28T45EEZZ
Quick Summary
Eaton V48M28T45EEZZ Open-core ventilated transformer delivers reliable three-phase power for industrial control panels. Engineers often struggle with balancing efficiency, thermal management, and a compact footprint in demanding environments. This unit is NEMA TP-1 compliant, UL Recognized, and offers taps for +2.5% and -2.5% to maintain voltage under variable supplies. Designed for panel builders and OEMs, it delivers 480 V input to 208Y/120 V outputs at 45 kVA with predictable, safe operation. The open-core design improves cooling and serviceability, supporting longer service life and easier maintenance.
Product Information
Extended Description
V48M28T45EEZZ Eaton: Eaton Open core-coil ventilated transformer, DT-3 (3-phase), PV 480V, Taps: 2 at +2.5% /4 at -2.5%, SV 208Y/120V, 150°C rise w/ 200°C insulation systeam, 45 kVA, EE, ZZ
Product Name
Eaton Open core-coil ventilated transformer
Catalog Number
V48M28T45EEZZ
UPC
786680047374
Product Length/Depth
0.001 in
Product Height
32.02 in
Product Width
0.001 in
Product Weight
367 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 TP-1 Compliant
Certifications
UL Recognized
Catalog Notes
NEMA TP-1 efficient, Open type core and coil assembly
Coil material
Aluminum
Frame
912C
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Dry Type Distribution Transformer
Frequency rating
60 Hz
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208 Y/120 V
Temperature rise
150 °C rise
Volt ampere rating
45 kVA
Three-phase 45 kVA rating with a 480 V primary and 208Y/120 V secondary provides robust distribution for mid-size control panels, enabling larger loads without overheating and reducing downtime in manufacturing lines. The open-core ventilated construction enhances cooling and airflow, delivering improved thermal performance and longer transformer life in busy factory floors. Tap changes include 2 taps at +2.5% and 4 taps at -2.5%, allowing precise voltage regulation as utility supplies vary, which minimizes nuisance tripping and protects sensitive equipment. Compliance and safety are streamlined by NEMA TP-1 compliance and UL Recognized certification, simplifying procurement and reducing risk during audits. With a 150 °C rise and a 200 °C insulation system, this unit withstands tough industrial conditions, while aluminum coil windings and a rugged 912C frame support reliable operation over time. For system integrators, its compatibility with standard dry-type distribution practices eases installation, retrofits, and future upgrades in automation environments.
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FAQs
Begin by confirming enclosure clearance for a 912C frame device and ensuring the panel bus bars accommodate a 480 V primary. Follow standard dry-type transformer installation guidelines, mount on a rigid base, connect the aluminum coil leads per the nameplate, and integrate the 60 Hz three-phase supply with proper protection devices. The unit’s NEMA TP-1 compliance supports safe operation under typical industrial conditions.
The V48M28T45EEZZ is designed with a 480 V primary and a 208Y/120 V secondary. This configuration supports standard industrial control systems and equipment that require 208Y/120 V auxiliary power derived from a 480 V distribution feed, with voltage-tap options for fine regulation.
Yes. The transformer is NEMA TP-1 compliant for efficiency and open-type core construction, and it carries UL Recognized certification, which helps streamline procurement, installation, and regulatory satisfaction in industrial facilities.
As a dry-type open-core ventilated transformer, routine checks focus on ensuring unobstructed cooling paths, clean air intake, and secure electrical connections. Inspect insulation integrity and verify that taps remain within spec. The unit’s high ambient tolerance supports sustained operation in hot factory environments when properly ventilated.
Ideal for panel boards, machine controls, and medium-load distribution, the V48M28T45EEZZ supports stable voltage with precise regulation via its taps, reducing outages and equipment stress. The combination of 45 kVA rating, NEMA TP-1 efficiency, and UL recognition translates to lower maintenance costs, longer service life, and quicker compliance across industrial automation deployments.