Eaton QS20N11S83CU Marine encapsulated transformer - UL
Part Number: QS20N11S83CU
Quick Summary
QS20N11S83CU is an Eaton marine encapsulated transformer that provides isolated power for rugged marine electrical systems. Operators in boats and offshore equipment face moisture, corrosion, and space constraints that threaten reliability. This unit comes UL Listed with a NEMA 3R enclosure for indoor-outdoor service, copper windings, 60 Hz operation, and a compact footprint. Designed for integration in switchgear, panel boards, and instrumentation racks, it supports steady control power while helping maintain uptime and compliance in demanding environments.
Product Information
Extended Description
QS20N11S83CU Eaton: Eaton Marine duty encapsulated transformer, marine duty encapsulated transformer, EPM, copper, NEMA 3R, 55, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, NONE, 115 °C rise, 0.15 KVA, indoor-outdoor, 3A150Q
Product Name
Eaton Marine duty encapsulated transformer
Catalog Number
QS20N11S83CU
UPC
786680031762
Product Length/Depth
4 in
Product Height
8.91 in
Product Width
4.11 in
Product Weight
8 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
55
Tap size
None
Type
Marine Duty Encapsulated Transformer
Wiring connection
3A150Q
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
0.15 kVA
Weathershield
Indoor-Outdoor
Feature: Marine duty encapsulation provides robust protection against moisture, salt spray, and vibration. Business Impact: Reduces field failures and maintenance costs, improving system reliability in harsh marine conditions. Application: Ideal for control panels and power distribution in boats, ships, and offshore platforms. Feature: Copper windings deliver high conductivity and efficient heat management. Business Impact: Improves voltage regulation and energy efficiency at 60 Hz, lowering operating temperatures and extending component life. Application: Used in single-phase power conversion for marine instrumentation and lighting. Feature: 0.15 kVA rating with a compact 4 x 8 in footprint. Business Impact: Enables easy integration into crowded panel spaces and small equipment cabinets, reducing enclosure overhang and installation time. Application: Suitable for auxiliary power in compact marine control enclosures. Feature: NEMA 3R enclosure with indoor-outdoor weather resilience. Business Impact: Provides durable service in exposed marine environments, cutting shielding and enclosure retrofit needs. Application: Marine decks, weather-exposed control rooms, and outdoor electrical gear. Feature: UL Listed certification and built-in rugged construction. Business Impact: Facilitates procurement, regulatory compliance, and qualified vendor status while delivering dependable performance. Application: Required for contracted marine systems and fleet maintenance programs. Feature: Wiring connection 3A150Q simplifies field wiring. Business Impact: Reduces installation time and minimizes wiring errors, accelerating commissioning. Application: Directly supports standard control cabling in new or retrofit installations.
Get a Quick Quote for a Eaton QS20N11S83CU
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton QS20N11S83CU?
Enquire Now
FAQs
For installation, ensure proper ventilation and clearance around the 4x8 in footprint to allow for heat dissipation at 0.15 kVA. Mount on a rigid surface with level alignment to avoid vibration-induced wear. Verify wiring using the 3A150Q connection scheme and route cables away from moisture, salt spray, and direct sunlight to maintain UL Listed performance in a NEMA 3R enclosure.
The transformer is rated for single-phase operation at 60 Hz with primary voltages of 240 V and 480 V, and secondary voltages of 120/240 V. This supports step-down from higher plant service to common 120/240 V control circuits used in marine instrumentation and panels.
Yes. The unit is designed with a NEMA 3R enclosure for indoor-outdoor service, making it suitable for weather-exposed marine environments such as decks and outdoor control rooms while maintaining reliable insulation and protection against moisture and corrosion.
The QS20N11S83CU carries UL Listed certification, confirming compliance with safety standards for electrical equipment used in marine and industrial installations. The NEMA 3R enclosure further supports environmental protection. Together, these certifications help meet regulatory requirements and streamline approval in fleet and project specifications.
Maintenance is typically limited to periodic inspection of enclosure integrity and wiring connections, given the encapsulated copper-wound design. The 0.15 kVA rating suits small loads, enabling energy efficiency and reduced downtime, which translates to lower maintenance costs and improved uptime for critical equipment in marine operations.