Eaton MV48M22F12CU General Purpose Transformer - UL Listed
Part Number: MV48M22F12CU
Quick Summary
MV48M22F12CU Eaton is a general purpose ventilated transformer designed for marine duty power distribution on vessels and offshore installations. Operators face space constraints, harsh weather, and the need for reliable taps and protection in dynamic marine environments; this unit delivers rugged performance with a NEMA 2 enclosure and copper windings. It carries UL Listed and ABS Certified marks, supporting regulatory compliance and safe installation on critical systems. The WS39 weather shield option improves outdoor durability, while the 112.5 kVA rating and 480 V primary to 240/120 V secondary support hotel, propulsion, and auxiliary loads. For procurement, it integrates with Eaton’s transformer catalog and spare-parts ecosystem, reducing downtime and lifecycle costs.
Product Information
Extended Description
MV48M22F12CU Eaton: Marine Duty Transformer, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 240 delta/120 midtap, 112.5 kVA, Cu windings, Frame: 915D, uses WS39
Product Name
Eaton General purpose ventilated transformer
Catalog Number
MV48M22F12CU
UPC
786680032295
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
675 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
915D
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
240 V, 120 V
Volt ampere rating
112.5 kVA
Weathershield
WS39
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - MV48M22F12CU
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The MV48M22F12CU is built as a marine duty transformer with a 112.5 kVA rating and 480 V primary, delivering reliable step-down to 240/120 V for shipboard loads. This enables stable power for hotel load, lighting, and auxiliary systems, reducing voltage sag and equipment wear in rolling seas. The copper windings improve thermal efficiency and long-term reliability, which translates to lower maintenance costs and fewer unplanned outages for critical equipment like pumps and control panels. With a NEMA 2 enclosure and WS39 weather shield, the unit provides robust protection against dust, moisture, and weather, ensuring continuous operation in exposed outdoor or humid environments. The 60 Hz frequency and precise taps (2 at +2.5%, 4 at -2.5%) enable tight voltage regulation across fluctuating sail and engine loads, supporting motor starting and control gear. Installation compatibility with standard Eaton catalog parts simplifies spares, reduces lead times, and minimizes total cost of ownership. Industry-wide, this transformer supports compliance with UL Listed and ABS Certified requirements, aligning with marine safety and insurance expectations. Resource planning benefits include extended service life, easier troubleshooting, and predictable lifecycle budgeting.
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FAQs
For panel installation, ensure the unit is mounted in a suitable space with clear access to the 480 V primary and 240/120 V secondary connections. Use the 915D frame for rack integration, and maintain appropriate clearance for cooling. The NEMA 2 enclosure and WS39 shield provide protection against moisture and dust; verify UL Listed/ABS Certified compliance for shipboard use and secure proper cable glands and torque specs per Eaton recommendations.
The MV48M22F12CU includes taps at two positions for +2.5% FCAN and four positions at -2.5% FCBN, enabling fine voltage regulation under varying load conditions. This helps mitigate voltage drop during motor starting and peak hotel loads. With a 480 V primary and 240/120 V secondary, operators can maintain stable auxiliary power without overloading distribution panels or compromising control gear.
Yes. With 112.5 kVA rating and a 60 Hz frequency, the MV48M22F12CU is designed to support shipboard hotel loads, lighting, pumps, and propulsion auxiliaries. The copper windings improve efficiency and heat dissipation, while the WS39 weather shield option enhances outdoor durability. Its enclosure and rugged frame make it suitable for installation in wet or humid marine environments.
The transformer is UL Listed and ABS Certified, signaling conformance to North American electrical safety standards and marine-specific requirements. These certifications facilitate regulatory approvals, insurance acceptance, and safer onboarding for vessel electrical systems. Always verify the latest certificate scope with Eaton documentation and ensure installation complies with applicable marine codes and class society rules.
The product carries a one-year warranty from installation or eighteen months from shipment, whichever occurs first. Routine maintenance includes monitoring winding temperatures, inspecting the WS39 shield and enclosure for corrosion, and confirming tap operation during voltage fluctuations. Maintain spare parts from Eaton’s catalog to minimize downtime and coordinate with Eaton service partners for periodic inspections and long-term lifecycle planning.