Eaton MV48M28F33CU Marine Transformer - UL Listed
Part Number: MV48M28F33CU
Quick Summary
MV48M28F33CU is a marine transformer that provides reliable three-phase power conversion from 480 V to 208Y/120 V for vessels and offshore facilities. Engineers often struggle with voltage drift, space constraints, and harsh environmental conditions in power distribution; this unit addresses those pain points with rugged construction and proven performance. UL Listed and ABS Certified offer safety and maritime compliance, while a NEMA 2 enclosure and WS34 weather shield enhance durability in marine settings. Designed for marine duty applications, it delivers 300 kVA with voltage-tap flexibility, supporting installation in constrained spaces and contributing to improved uptime, energy management, and system resilience for shipboard power distribution.
Product Information
Extended Description
MV48M28F33CU Eaton: Marine Duty Transformer, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 300 kVA, Cu windings, Frame: 918A, uses WS34
Product Name
Eaton General purpose ventilated transformer
Catalog Number
MV48M28F33CU
UPC
786680032141
Product Length/Depth
30.68 in
Product Height
62.18 in
Product Width
31.44 in
Product Weight
2134 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 ABS Certified
Coil material
Copper
Enclosure
NEMA 2
Frame
918A
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Marine Duty Transformer
Frequency rating
60 Hz
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Volt ampere rating
300 kVA
Weathershield
WS34
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - MV48M28F33CU
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: Three-phase 480 V primary to 208Y/120 V secondary with a 300 kVA rating enables scalable power distribution for shipboard and offshore electrical systems, improving load handling and reducing equipment stress. In practice, this translates to consistent voltages under variable ship loads and enhanced reliability for critical onboard systems. Application: suitable for marine power networks and industrial vessels seeking robust, shipboard-ready transformers with stable secondary voltage. Feature → Business Impact → Application: Copper windings maximize conductivity and thermal performance, lowering copper loss and improving overall efficiency in continuous operation. Application: preferred in demanding environments where efficiency translates to lower operating costs and cooler transformer operation. Feature → Business Impact → Application: Tap settings (two at +2.5% FCAN and four at -2.5% FCBN) provide voltage regulation capabilities that minimize nuisance trips and protect connected equipment. Application: critical for variable load scenarios on vessels and offshore platforms. Feature → Business Impact → Application: WS34 weather shield and NEMA 2 enclosure deliver weather-resistant protection, enabling exterior installation and long service life. Application: ideal for exposed marine locations and outdoor installations. Feature → Business Impact → Application: Frame 918A and copper coil construction ensure mechanical robustness and easy integration with existing frame standards. Application: supports quick replacement, compatible mounting on standard racks, and reliable performance under vibration and temperature cycling. Feature → Business Impact → Application: UL Listed and ABS Certified provide regulatory compliance and confidence for maritime operators. Application: essential for certified projects, port facilities, and fleet maintenance programs. Feature → Business Impact → Application: 60 Hz operation with 480 V primary and 208Y/120 V secondary aligns with common shipboard electrical systems, streamlining integration. Application: reduces wiring complexity and accelerates commissioning on new vessels or retrofits.
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FAQs
For marine installations, ensure space for a tall, heavy transformer (approx. 2134 lb) with a footprint compatible with the 30.68 in x 31.44 in x 62.18 in dimensions. Use a level, vibration-damped base, provide adequate ventilation, and protect from salt spray with the WS34 weather shield and NEMA 2 enclosure. Verify 60 Hz input and confirm 480 V primary to 208Y/120 V secondary wiring; plan for taps at +2.5% and -2.5% to accommodate voltage fluctuations.
The transformer offers 2 taps at +2.5% FCAN and 4 taps at -2.5% FCBN, enabling voltage adjustment to compensate for supply variations and load changes. This reduces voltage drop on sensitive equipment and minimizes nuisance tripping, improving uptime in dynamic marine loads such as propulsion, HVAC, and critical control systems.
Yes. The MV48M28F33CU is designed as a marine duty transformer with a rugged NEMA 2 enclosure and WS34 weather shield, plus copper windings for durability and thermal efficiency. It carries UL Listed and ABS Certified approvals, aligning with maritime safety and reliability standards required on offshore platforms and ships.
The unit is UL Listed and ABS Certified, signaling compliance with electrical safety and maritime regulatory requirements. These certifications validate protective measures, insulation integrity, and performance under maritime conditions, helping you meet port authority mandates and shipyard procurement criteria while reducing risk in maintenance planning.
The transformer carries Eaton’s warranty policy and a certified build, with OEM guidance on maintenance intervals typical for marine power equipment. Regular inspections of enclosure seals, cooling paths, and tap connections help maximize uptime. The 300 kVA rating and robust construction support longer service life and predictable ROI through fewer trips to the load centers and improved energy management.