Eaton LY48M25T45CU Marine Duty Transformer - UL Listed
Part Number: LY48M25T45CU
Quick Summary
Eaton LY48M25T45CU Marine duty encapsulated transformer powers rugged maritime electrical systems. In marine environments, space constraints and salt exposure drive the need for reliable, low-maintenance power conversion. This UL Listed unit is engineered for indoor-outdoor service with a 60 Hz, three-phase footprint, delivering 45 kVA from 480 V to 220 V. The encapsulated copper-wind design reduces moisture ingress and vibration, translating to lower maintenance costs and longer mean time between failures. For engineers and procurement teams, the transformer offers straightforward installation, predictable performance, and a serviceable footprint that minimizes downtime while maximizing system availability on vessels and offshore installations.
Product Information
Extended Description
LY48M25T45CU Eaton: Eaton Marine duty encapsulated transformer, marine duty encapsulated transformer, EPTM, copper, 244, 60 Hz, three-phase, 480 V, 220 V, 2 at +2.5% FCAN 4 at -2.5% FCBN, 115 °C rise, 45 KVA, indoor-outdoor, 85A45
Product Name
Eaton Marine duty encapsulated transformer
Catalog Number
LY48M25T45CU
UPC
786680111365
Product Length/Depth
14.66 in
Product Height
28.15 in
Product Width
26.58 in
Product Weight
800 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
Frame
244
Tap size
2 at +2.5% FCAN 4 at -2.5% FCBN
Type
Marine Duty Encapsulated Transformer
Wiring connection
85A45
Frequency rating
60 Hz
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
220 V
Temperature rise
115 °C rise
Volt ampere rating
45 kVA
Weathershield
Indoor-Outdoor
Feature → Business Impact → Application: Marine duty encapsulated transformer construction (EPTM) with copper windings delivers robust endurance against corrosion and vibration, reducing unscheduled maintenance and extending service life in salt-air environments. This enables reliable onboard power distribution on ships and offshore platforms where downtime is costly. Feature → Voltage flexibility and compatibility → Application: Primary 480 V, secondary 220 V with 2 taps at +2.5% and 4 taps at -2.5% FCBN supports voltage regulation across varying loads and supply conditions, improving voltage stability for sensitive equipment in engine rooms and control panels. Feature → 60 Hz, three-phase performance → Application: 45 kVA rating suits mid-load transfer and distribution tasks on compact power centers, enabling efficient utilization of generator sets and switchgear. Feature → Weathershield Indoor-Outdoor and indoor-outdoor operation → Application: Indoor-outdoor deployment reduces enclosure requirements and simplifies installation across diverse marine spaces, from berthing areas to weather-exposed decks. Feature → Safety, warranty, and serviceability → Application: UL Listed certification, Eaton warranty, and a straightforward 1-year (or 18-month from shipment) policy provide confidence for maintenance planning and lifecycle cost reduction. Feature → Physical dimensions and weight → Application: With dimensions 14.66 in L x 28.15 in H x 26.58 in W and a 800 lb weight, this transformer balances power density with practical mounting and handling in constrained machinery rooms.
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FAQs
Yes. The LY48M25T45CU is a 3-phase transformer rated 45 kVA with a 480 V primary and 220 V secondary, designed for shipboard and offshore environments. Its encapsulated copper-winding construction and indoor-outdoor rating support rugged marine installations while maintaining voltage stability across varying load conditions.
The transformer operates at 60 Hz with a 45 kVA rating and a 115 °C rise, providing reliable voltage transformation from 480 V to 220 V. Copper windings and encapsulated construction offer reduced losses, improved thermal performance, and enhanced resilience to vibration and salt exposure typical of marine sites.
It is designed for indoor-outdoor service, with Weathershield capabilities to withstand marine conditions. Consider space for its footprint (approximately 14.66 in L x 28.15 in H x 26.58 in W) and its 800 lb weight when planning mounting, clearance for heat dissipation, and accessibility for inspection and maintenance.
The LY48M25T45CU carries UL Listed certification for safety. It also includes Eaton’s standard warranty policy (25-000), offering one year from installation or eighteen months from shipment, whichever comes first, supporting maintenance planning and total cost of ownership.
Copper windings, marine-duty encapsulation, and a robust indoor-outdoor design reduce corrosion risk and thermal stress, lowering maintenance intervals. The 45 kVA rating aligns with efficient utilization of gensets and switchgear, delivering predictable performance and reduced downtime, which translates to lower long-term operating costs in fleets and offshore facilities.