Eaton LY48M28T75CU Marine Duty Transformer - UL Listed
Part Number: LY48M28T75CU
Quick Summary
Eaton LY48M28T75CU marine duty encapsulated transformer provides reliable power conversion for marine electrical systems. Designed to survive harsh conditions, space constraints, and frequent vibrations, it helps prevent outages during critical missions and long port stays. UL Listed with a rugged NEMA 3R enclosure ensures electrical safety and environmental protection; the copper coil improves thermal performance and durability in salt spray conditions. Its 75 kVA rating, 480 V primary to 208Y/120 V secondary, 60 Hz operation, and dual taps (+2.5% FCAN, -2.5% FCBN) support flexible, code-compliant power distribution across marine systems, reducing downtime and simplifying maintenance workflows for crews. This combination supports reliability and total cost of ownership advantages.
Product Information
Extended Description
LY48M28T75CU Eaton: Eaton Marine duty encapsulated transformer, marine duty encapsulated transformer, EPTM, copper, NEMA 3R, 245, 60 Hz, three-phase, 480 V, 208Y/120 V, 2 at +2.5% FCAN, 4 at -2.5% FCBN, 115 °C rise, 75 KVA, indoor-outdoor, 84A75L
Product Name
Eaton Marine duty encapsulated transformer
Catalog Number
LY48M28T75CU
UPC
786680032028
Product Length/Depth
15.68 in
Product Height
32.06 in
Product Width
30.29 in
Product Weight
1450 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
Coil material
Copper
Design
EPTM
Enclosure
NEMA 3R
Frame
245
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Marine Duty Encapsulated Transformer
Wiring connection
84A75L
Frequency rating
60 Hz
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
115 °C rise
Volt ampere rating
75 kVA
Weathershield
Indoor-Outdoor
Feature: Marine duty encapsulated transformer with copper windings and encapsulation. Business Impact: Provides robust protection against humidity, salt spray, and vibration, reducing insulation moisture ingress and extending service life. Application: Ideal for on-deck switchgear, engine rooms, and waterfront substations where space is tight and environment is harsh. Feature: 75 kVA rating with 480 V to 208Y/120 V three-phase operation. Business Impact: Delivers reliable, regulated power for critical loads while enabling efficient distribution across shipboard circuits. Application: Supports control panels, instrumentation, and essential systems on vessels and offshore facilities. Feature: Dual taps (+2.5% FCAN, -2.5% FCBN). Business Impact: Maintains voltage within tight tolerances during load swings, reducing equipment stress and nuisance tripping. Application: Provides voltage correction for motors and drives during variable load conditions. Feature: NEMA 3R indoor-outdoor enclosure. Business Impact: Weatherproof and corrosion-resistant housing enables safe installation in exposed marine environments. Application: Dockside, engine rooms, and offshore installations where mounting flexibility is needed. Feature: UL Listed certification and copper coil construction. Business Impact: Ensures electrical safety, improved thermal performance, and easier compliance auditing. Application: Procurement and maintenance teams seeking durable, code-compliant equipment for harsh environments. Feature: Weathershield suitability and 60 Hz, three-phase design. Business Impact: Optimizes compatibility with standard shipboard electrical systems while delivering predictable performance under varying environmental conditions. Application: Integrates with 480 V primary power networks and 208Y/120 V secondary loads on vessels and offshore platforms.
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FAQs
LY48M28T75CU is a three-phase transformer with a 480 V primary and 208Y/120 V secondary, designed for marine duty. It uses copper windings and a NEMA 3R enclosure to withstand salt spray and humidity, making it compatible with shipboard panels, engine rooms, and waterfront substations while maintaining stable secondary voltages under typical marine load profiles.
Install with adequate clearance for connections and cooling, mount on a vibration-tolerant base, and locate within its NEMA 3R-rated enclosure for indoor-outdoor use. Ensure proper torque on taps, maintain access for maintenance, and plan for weight (approximately 1450 lb). Consider nearby equipment to minimize heat and magnetic interference.
Yes. The transformer is UL Listed and uses a rugged NEMA 3R enclosure, specifically designed for marine environments. Copper windings provide reliable thermal performance, and the indoor-outdoor rating supports deployment on decks, near shore facilities, or in exposed engine rooms while maintaining electrical safety and longevity.
Applications include onboard power distribution for ships, offshore platforms, and waterfront facilities where 480 V three-phase service feeds 208Y/120 V loads. It suits control panels, instrumentation, and drives requiring stable secondary voltages, with voltage regulation via taps to accommodate load swings and supply resilience in harsh environments.
The transformer carries Eaton’s policy: one year from installation or eighteen months from shipment, whichever occurs first. Field service expectations include periodic thermal checks, tap verification on start-up, and routine inspection of the NEMA 3R enclosure for seals, preserving reliability in marine conditions.