Eaton MV48M22F75CU Marine Duty Transformer - UL Listed
Part Number: MV48M22F75CU
Quick Summary
MV48M22F75CU is a marine duty transformer that provides 75 kVA of three-phase power conversion for on-board electrical systems. Engineers often struggle with reliable power delivery in corrosive marine environments, where moisture, vibration, and space constraints challenge uptime. It carries UL Listed, ABS Certified, and NEMA TP-1 efficiency marks, signaling compliance with safety, marine regulations, and energy performance. Coupled with copper windings and precise taps, it supports stable voltage for critical gear while helping reduce downtime and maintenance costs across vessel power-distribution networks. This combination of rugged construction and thoughtful design makes it a reliable backbone for marine systems.
Product Information
Extended Description
MV48M22F75CU Eaton: Marine Duty Transformer, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 240 delta/120 midtap, 75 kVA, Cu windings, Frame: 915D, uses WS39
Product Name
Eaton General purpose ventilated transformer
Catalog Number
MV48M22F75CU
UPC
786680032288
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
550 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
Catalog Notes
NEMA TP-1 efficient
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
75 kVA
Weathershield
WS39
Copper windings deliver low resistance, improving efficiency and voltage regulation under load; this matters for motors and controls on ships and offshore platforms, reducing I2R losses and heat generation. The business impact is lower energy costs and longer equipment life, enabling more predictable maintenance planning in demanding environments. The application spans propulsion auxiliaries and deck equipment where steady voltage supports reliable operation. The 75 kVA rating aligns with typical vessel electrical loads, reducing the need for oversized gear and enabling more compact, cost-effective distribution schemes aboard ships and offshore platforms. In practice, you gain space efficiency and reduced capital expenditure while meeting project electrical load forecasts. The transformer provides a clean 480 V to 240/120 V secondary, simplifying distribution to control panels, lighting, and machinery rooms with improved voltage stability. This translates to fewer nuisance tripping events and smoother startup sequences on critical systems.
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FAQs
Plan a secure, vibration-resistant mounting footprint within a NEMA 2 enclosure area. Ensure adequate clearance for cooling and access to the WS39 weather shield. Route 480 V primary conductors to the bus and connect 240/120 V secondaries to distribution panels. Verify tap settings (+2.5% and -2.5%) to maintain voltage under load changes.
This transformer is a 75 kVA, three-phase unit with a 480 V primary and 240/120 V secondary, operating at 60 Hz. It uses copper windings, weighs 550 lb, and comes in a 22 in L x 29 in W x 39 in H enclosure. Taps include 2 at +2.5% FCAN and 4 at -2.5% FCBN.
Yes. The unit is UL Listed and ABS Certified, with NEMA TP-1 efficiency notes. It features a NEMA 2 enclosure and WS39 weather shield designed for marine environments, supporting regulatory compliance and reliability in harsh boatyard and offshore conditions.
Maintenance is primarily routine checks for corrosion, enclosure integrity, and cooling clearance. With copper windings and a ventilated design, monitor for surface moisture and dust buildup. Plan periodic voltage tests to verify secondary voltage stability and keep taps clean and accessible for field adjustments as loads vary.
The transformer measures 22 in in length, 29 in in width, and 39 in in height, weighing 550 lb. It uses a 915D frame and is designed for marine-duty installation with a NEMA 2 enclosure and WS39 weather shield, facilitating installation in engine rooms, cargo holds, or deck power rooms.