Eaton QS20N11S02CU Marine Duty Transformer - UL Listed
Part Number: QS20N11S02CU
Quick Summary
The Eaton QS20N11S02CU marine duty encapsulated transformer provides clean, reliable power conversion for rugged marine and outdoor electrical systems. Operators often struggle with moisture, corrosion, and space constraints in harsh environments, leading to downtime and costly maintenance. This unit achieves safety and performance with UL Listed certification and a rugged NEMA 3R enclosure designed for indoor-outdoor operation. Its copper windings and encapsulated construction minimize losses, while a 2 kVA rating supports essential loads without overtaxing the system. With 60 Hz, single-phase operation and dual primary voltages, it adapts to shore power or vessel distribution, delivering consistent voltage to downstream equipment and boosting overall efficiency and uptime.
Product Information
Extended Description
QS20N11S02CU Eaton: Eaton Marine duty encapsulated transformer, marine duty encapsulated transformer, EPM, copper, NEMA 3R, 68, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, NONE, 115 °C rise, 2 KVA, indoor-outdoor, 3A2Q
Product Name
Eaton Marine duty encapsulated transformer
Catalog Number
QS20N11S02CU
UPC
786680031823
Product Length/Depth
6.52 in
Product Height
13.41 in
Product Width
6.37 in
Product Weight
46 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
EPM
Enclosure
NEMA 3R
Frame
68
Tap size
None
Type
Marine Duty Encapsulated Transformer
Wiring connection
3A2Q
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
2 kVA
Weathershield
Indoor-Outdoor
Feature → 2 kVA copper-wound transformer. Business Impact → Lower impedance and improved efficiency translate to reduced energy losses and cooler operation under load. Application → Ideal for control panels and auxiliary power on ships and outdoor equipment where space is at a premium. Feature → Primary 240/480 V; Secondary 120/240 V. Business Impact → Flexible power conversion supports dual-volt systems and simplifies integration with existing distribution. Application → Shore power connections and vessel electrical distribution without additional step-down gear. Feature → Encapsulated design with copper windings. Business Impact → Enhanced moisture resistance and reliability in harsh environments, reducing maintenance cycles. Application → Marine engines rooms, exposed decks, wet-damp locations. Feature → NEMA 3R enclosure; Indoor-Outdoor rating. Business Impact → Weatherproof protection minimizes corrosion and water ingress, extending service life. Application → Outdoor panels and wet/damp locations on vessels and offshore assets. Feature → 60 Hz single-phase operation and 2 kVA rating. Business Impact → Predictable performance for common auxiliary loads with straightforward sizing and procurement. Application → Lighting, pumps, and motor-control circuits in marine and industrial installations. Feature → UL Listed certification and “Marine Duty” encapsulation. Business Impact → Compliance with safety standards accelerates procurement approvals and ensures contractor acceptance. Application → Projects with rigorous safety requirements and code compliance.
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FAQs
The QS20N11S02CU is designed for marine and outdoor use with a NEMA 3R enclosure, supporting a 2 kVA load at 60 Hz single-phase. It converts 240/480 V primary to 120/240 V secondary, making it suitable for shipboard panels, outdoor control cabinets, and dockside equipment.
Wiring is configured via the 3A2Q connection scheme using copper windings. Follow the product label and applicable electrical codes for grounding and component separation. Ensure load connections on the 120/240 V secondary are balanced to minimize voltage drop and heat buildup.
This transformer is UL Listed and uses a NEMA 3R enclosure, suitable for indoor-outdoor operation. This combination provides safety certification and weather resistance essential for marine and harsh-environment installations.
Yes. Its marine-duty encapsulated design, copper windings, and NEMA 3R enclosure are optimized for decks, engine rooms, and wet-damp locations. The 2 kVA rating supports essential loads without overheating, helping prevent downtime in demanding marine applications.
Warranty follows Eaton policy 25-000, offering one year from installation or 18 months from shipment, whichever comes first. Routine inspection of enclosure seals and connections, plus periodic thermal checks, helps sustain performance and aligns with standard maintenance practices for marine equipment.