Eaton V48M28T12ZZ Open core-coil ventilated transformer - UL Recognized
Part Number: V48M28T12ZZ
Quick Summary
V48M28T12ZZ is a three-phase open core-coil ventilated transformer designed for reliable distribution and control panel applications. In many plants, space, cooling, and maintenance challenges slow projects; this design delivers ventilation-friendly cooling and robust operation. UL Recognized certification supports safe North American installations, while the DT-3 design and aluminum windings improve efficiency and reliability. Designed for 480 V primary and 208Y/120 V secondary service, it suits medium-load distribution with a 112.5 kVA rating. This combination of open-core ventilation, high-temperature rise capability, and a durable frame makes it a solid choice for control panels and distribution boards.
Product Information
Extended Description
V48M28T12ZZ Eaton: 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, 112.5 kVA , Al windings , Frame: 915C
Product Name
Eaton Open core-coil ventilated transformer
Catalog Number
V48M28T12ZZ
UPC
786680003622
Product Length/Depth
0.001 in
Product Height
32.02 in
Product Width
0.001 in
Product Weight
525 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 Recognized
Catalog Notes
Open type core and coil assembly
Coil material
Aluminum
Design
DT-3
Frame
915C
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Dry Type Distribution Transformer
Frequency rating
60 Hz
Kva Rating
112.5 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
150 °C rise
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - V48M28T12ZZ
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: Open core-coil ventilated design improves airflow and reduces hotspot risk, extending transformer life and reducing maintenance cycles. Application: Ideal for open-panel installations in manufacturing lines where ventilation is a design constraint and space is at a premium. Feature → Business Impact → Application: 112.5 kVA three-phase rating with 480 V primary and 208Y/120 V secondary enables efficient power transformation for control systems, reducing wiring complexity and panel footprint. Application: Voltage conversion for motor drives, PLC cabinets, and distribution panels. Feature → Business Impact → Application: Tap strategy with 2 taps at +2.5% and 4 taps at -2.5% enables precise voltage regulation, lowering nuisance tripping and improving equipment performance in fluctuating supply environments. Application: Sites with irregular utility voltages or long feeder runs. Feature → Business Impact → Application: Aluminum windings offer reduced weight and corrosion resistance, simplifying handling and maintenance while sustaining efficiency. Application: Dry-type transformer deployment in dusty or humid plant areas. Feature → Business Impact → Application: Frame 915C and a 32.02 in height provide robust mechanical mounting in standard enclosures, simplifying installation and inventory planning. Application: Panel boards and distribution rooms where fit and serviceability matter. Feature → Business Impact → Application: UL Recognized certification delivers safety compliance and market acceptance, supporting procurement cycles and project approvals. Application: North American facilities prioritizing certified, safe electrical equipment.
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FAQs
For best results, mount the transformer in a ventilated enclosure with clearances for airflow, ensure alignment with 480 V primary and 208Y/120 V secondary wiring, and follow the DT-3 open-core guidelines. Confirm mounting supports, weight (525 lb), and access for inspection during routine maintenance.
The V48M28T12ZZ provides taps at +2.5% FCAN and four taps at -2.5% FCBN, enabling precise voltage regulation to compensate for supply swings. This reduces overvoltage and undervoltage stress on downstream equipment, improving PLC reliability and reducing nuisance tripping in panel-mounted controls.
Yes. The transformer carries UL Recognized certification, aligning with North American safety standards for electrical equipment. Installers should still follow Eaton’s installation guidelines and the Selling Policy 25-000 to ensure compliant commissioning and warranty coverage.
Ideal for control panels, distribution boards, and machine rooms requiring reliable 480 V to 208Y/120 V step-down. The 112.5 kVA rating supports medium-load distribution in manufacturing lines, data centers, and process equipment, with open-core ventilation enhancing cooling in dense electrical rooms.
Choose dry-type construction with aluminum windings for reduced weight and corrosion resistance. Plan routine visual inspections, ensure cooling paths are unobstructed, and verify tap connections during periodic checks. The 150 °C rise rating supports sustained operation under load, while the UL Recognized certification confirms ongoing safety compliance.