Eaton RT20P11F37CUEETR Transformer - UL Listed
Part Number: RT20P11F37CUEETR
Quick Summary
Eaton RT20P11F37CUEETR is a general purpose ventilated transformer for marine-duty power distribution. Engineers often struggle with heat, vibration, and efficiency losses on ships and offshore facilities, affecting uptime and maintenance costs. UL Listed protection, a NEMA 2 enclosure, and NEMA TP-1 efficient design help meet regulatory requirements while delivering reliable service. Designed for 240 x 480 V primary and 120/240 V secondary, it supports flexible integration with shipboard and shore-based power systems. The 37.5 kVA rating with copper windings delivers energy efficiency and robust thermal performance, while taps enable precise voltage regulation to compensate for line drift. This combination reduces cooling requirements and provides predictable operation in demanding maritime environments.
Product Information
Extended Description
RT20P11F37CUEETR Eaton: Eaton General purpose ventilated transformer, Marine-duty, DS-3 (1-phase), PV 240 x 480V, Taps: 1 at +5%/2 at -5% x 2 at +2.5%/4 at -2.5%, SV 120/240V, 115°C rise, 37.5 kVA, Copper windings, EE, TR
Product Name
Eaton General purpose ventilated transformer
Catalog Number
RT20P11F37CUEETR
UPC
786680103759
Product Length/Depth
20.36 in
Product Height
37.59 in
Product Width
22.89 in
Product Weight
450 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
Catalog Notes
Certified Test Report of Standard Production Test (on CMI style), NEMA TP-1 efficient
Coil material
Copper
Enclosure
NEMA 2
Frame
818
Tap size
1 at +5% FCAN, 2 at -5% FCBN x 2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Marine duty ventilated transformer
Wiring connection
3XA37R
Frequency rating
60 Hz
Primary voltage
240 x 480 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
37.5 kVA
Weathershield
WS11
Marine-duty DS-3 single-phase configuration delivers robust performance in harsh environments. This design minimizes vibration and thermal stress on adjacent equipment, increasing reliability and lowering maintenance costs. It is ideal for shipboard electrical systems, ferries, and offshore platforms where reliability and footprint matter. Primary 240 x 480 V and secondary 120/240 V enables direct compatibility with typical maritime power buses, simplifying wiring topology and reducing installation time. The 37.5 kVA rating with copper windings improves load handling efficiency and long-term durability, supporting stable service under peak demand. Tap settings at +5%, -5%, +2.5%, and -2.5% provide voltage regulation to compensate for line losses and generator drift, simplifying commissioning in remote locations. Enclosure is NEMA 2 with WS11 weathershield for corrosion resistance and moisture protection in humid environments, enhancing lifecycle value. Wiring connection 3XA37R and the 818 frame facilitate standard mounting and straightforward field wiring, reducing on-site complexity and error margins. Overall, this transformer pairs engineering rigor with practical installation advantages to deliver predictable performance and lower total cost of ownership in marine and offshore power systems.
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FAQs
Install as a single-phase DS-3 marine-duty transformer, mounting on a vibration-resistant base with proper clearance for cooling. Connect primary 240 x 480 V and secondary 120/240 V using the 3XA37R wiring, and set taps correctly (±5% and ±2.5% as required) to regulate voltage. Ensure enclosure is securely closed and UL Listed components are used per code.
The RT20P11F37CUEETR carries UL Listed certification and is configured with a NEMA 2 enclosure and WS11 weather shield, aligning with maritime and industrial codes. It also references NEMA TP-1 efficiency criteria in its notes, supporting energy performance standards. These certifications facilitate regulatory compliance, safer installation, and streamlined procurement for compliant marine projects.
Yes. It is explicitly designed for marine-duty service with a 60 Hz frequency rating, 37.5 kVA output, copper windings, and a rugged NEMA 2 enclosure. The DS-3 single-phase configuration and taped voltage options are optimized for shipboard circuits, offshore platforms, and other harsh maritime environments seeking reliable, shipboard-ready power distribution.
The transformer features taps: 1 at +5%, 2 at -5%, and 4 at -2.5% with 2 at +2.5%; these allow precise voltage adjustment to compensate for line losses and generator drift. Use these taps during commissioning to maintain stable 120/240 V secondary output from a 240 x 480 V primary, ensuring equipment receives consistent voltage under varying loads.
The unit measures approximately 20.36 inches in depth, 37.59 inches in height, and 22.89 inches in width, with a shipping weight around 450 pounds. It uses an 818 frame and 3XA37R wiring connections. Plan for a rigid mounting surface with adequate clearance for ventilation and cable runs, following safe installation practices for heavy, maritime-grade transformers.