Eaton RT12M12F21CUEE General Purpose Ventilated Transformer - UL Listed, ABS Certified
Part Number: RT12M12F21CUEE
Quick Summary
Eaton RT12M12F21CUEE is a general purpose ventilated transformer for marine-duty power distribution. Engineers often struggle with space, heat, and reliability in harsh marine environments. This unit carries UL Listed and ABS Certified marks, with NEMA TP-1 efficiency to help meet stringent regulations while minimizing energy waste. With copper windings and a rugged NEMA 2 enclosure, it supports modular installation and predictable maintenance, delivering consistent 22.5 kVA at 60 Hz. For buyers, the combination of robust performance and long-term serviceability translates to lower total cost of ownership in demanding shipboard and offshore applications, aligning with industrial power distribution goals.
Product Information
Extended Description
RT12M12F21CUEE Eaton: Eaton General purpose ventilated transformer, Marine-duty, DS-3 (1-phase), PV 120V, Taps: 2 at +2.5% /4 at -2.5%, SV 120V, 115°C rise, 22.5 kVA, Copper windings, EE
Product Name
Eaton General purpose ventilated transformer
Catalog Number
RT12M12F21CUEE
UPC
786680057830
Product Length/Depth
20.36 in
Product Height
37.59 in
Product Width
22.89 in
Product Weight
421 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
818
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Marine Duty Transformer
Frequency rating
60 Hz
Primary voltage
120 V
Secondary Voltage
120 V
Volt ampere rating
22.5 kVA
Weathershield
WS11
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - RT12M12F21CUEE
Selling Policy 25-000 - Distribution and Control Products and Services
Copper windings deliver superior conductivity and reduced resistance. This feature lowers I2R losses, improving overall efficiency and heat management in continuous marine service. With copper windings, the transformer maintains performance in stifling engine rooms and generator sets, ensuring reliability when power quality matters most. Voltage taps provide on-site regulation. The device offers 2 taps at +2.5% and 4 taps at -2.5%, enabling quick compensation for voltage drop along lengthy feeder runs. This capability supports stable output for sensitive equipment like controls, sensors, and propulsion systems on ships and offshore platforms. Enclosure and protection: NEMA 2 enclosure with WS11 weather shield. Designed for indoor dry or protected outdoor locations; WS11 adds weather resistance and corrosion protection in marine environments. This reduces corrosion risk and prolongs service in wet engine rooms, cargo holds, or outdoor equipment spaces. Voltage and frequency ratings: Primary/Secondary 120 V, 60 Hz, 22.5 kVA. The 1-phase, 120/120 V configuration simplifies integration with common shipboard panels and distribution boards. Weight and size: 421 lb with dimensions 20.36 in length, 37.59 in height, 22.89 in width; plan for suitable mounting and lifting. Compliance, warranty and support: UL Listed and ABS Certified with NEMA TP-1 efficiency and a standard one-year warranty (18 months from shipment). This combination reduces risk and supports long-term maintenance planning. Industry-ready design helps procurement teams meet standards and accelerate job kickoffs while minimizing unexpected outages.
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FAQs
RT12M12F21CUEE supports 120 V primary and secondary at 60 Hz in a 1-phase design and weighs 421 lb, so plan for appropriate lifting equipment and a solid mounting pad. Its footprint (20.36 in x 37.59 in x 22.89 in) fits standard transformer spaces, and the NEMA 2 enclosure provides dry-location protection. Use the four voltage taps to maintain nominal voltage under variable loads.
Key specs include a 22.5 kVA rating and 60 Hz operation, with a 120 V primary and 120 V secondary in a 1-phase configuration. Copper windings reduce resistive losses, and the WS11 weather shield option adds environmental protection. Voltage regulation is supported by taps at +2.5% and -2.5%, aiding stability for downstream equipment.
Yes. This model is explicitly designed for marine duty, featuring UL Listed and ABS Certified safety marks, a NEMA 2 enclosure, and WS11 protection. Its 22.5 kVA rating aligns with common shipboard distribution needs, while copper windings ensure reliability in vibration-prone environments. It is well-suited for shipboard electrical rooms and offshore facilities requiring rugged, compliant power transformation.
It carries UL Listed and ABS Certified marks, indicating compliance with major marine electrical safety standards. The catalog notes emphasize NEMA TP-1 efficiency, supporting energy-performance expectations. These certifications streamline audits, procurement, and regulatory approvals for marine operators and shipyards.
The transformer’s copper windings and robust construction deliver long service life with minimal maintenance in demanding environments, helping reduce downtime. A one-year warranty (18 months from shipment) and strong certifications further mitigate risk. Although heavier at 421 lb, the unit’s durability, predictable performance, and availability of spare parts contribute to a favorable ROI for marine power systems.