Eaton QS48D11S37CU Marine transformer - UL Listed
Part Number: QS48D11S37CU
Quick Summary
Marine duty encapsulated transformer provides reliable power conversion for onboard distribution in marine applications. Eaton QS48D11S37CU enables rugged, code-compliant isolation and voltage conversion for HVAC, lighting, and instrumentation on ships and offshore platforms. This unit is UL Listed and built in a rugged NEMA 3R enclosure, designed for indoor-outdoor service with copper windings. Harsh marine environments, vibration, and corrosion challenge electrical gear; encapsulation and sealed construction reduce moisture ingress and extend service life. By delivering a 37.5 kVA rating with a 480 V to 120/240 V output and precise tap settings, it supports scalable power distribution with minimal electrical noise and downtime. For procurement teams, the transformer offers reliable availability, standardized mounting, and predictable maintenance windows to optimize fleet operations and budgets.
Product Information
Extended Description
QS48D11S37CU Eaton: Eaton Marine duty encapsulated transformer, marine duty encapsulated transformer, EPM, copper, NEMA 3R, 300A, 60 Hz, single-phase, 480 V, 120/240 V, 2 at +2.5% FCAN, 2 at -2.5% FCBN, 115 °C rise, 37.5 KVA, indoor-outdoor, 248B
Product Name
Eaton Marine duty encapsulated transformer
Catalog Number
QS48D11S37CU
UPC
786680080715
Product Length/Depth
14.06 in
Product Height
28.24 in
Product Width
22.42 in
Product Weight
855 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
300A
Tap size
2 at +2.5% FCAN, 2 at -2.5% FCBN
Type
Marine Duty Encapsulated Transformer
Wiring connection
248B
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
480 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
37.5 kVA
Weathershield
Indoor-Outdoor
Encapsulated design with copper windings enhances moisture resistance and thermal performance in salty, vibratory marine environments. This translates to lower insulation wear, fewer unplanned outages, and reduced maintenance costs for onboard power systems. With a 37.5 kVA rating, single-phase operation, a 480 V primary and 120/240 V secondary at 60 Hz, the unit supports critical loads such as HVAC, lighting, and instrumentation, delivering efficient, low-loss voltage transformation. Tap changers provide 2 at +2.5% FCAN and 2 at -2.5% FCBN, enabling precise voltage regulation under fluctuating shipboard loads. The NEMA 3R enclosure offers indoor-outdoor protection, reducing exposure to rain, humidity, and salt spray while improving field mounting reliability. Wiring connection 248B and standard mounting footprints simplify installation and compatibility with Eaton’s EPM design ecosystem. UL Listed certification reinforces safety and regulatory alignment, and the warranty aligns with Eaton’s policy for predictable maintenance cycles.
Get a Quick Quote for a Eaton QS48D11S37CU
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 QS48D11S37CU?
Enquire Now
FAQs
Plan for the unit's 855 lb weight and secure mounting to minimize vibration transfer. Ensure adequate clearance for cooling and wiring (248B) and follow nameplate connections for 480 V primary and 120/240 V secondary. Allow space for tapping adjustments and fusing. Consider load planning to leverage the 37.5 kVA rating and max voltage regulation via the ±2.5% taps during operation.
The transformer is a single-phase, 60 Hz device rated at 37.5 kVA with a 480 V primary and a 120/240 V secondary. It features copper windings in an EPM design and provides two +2.5% FCAN and two -2.5% FCBN taps for voltage adjustment. It has a 115 °C rise rating and is designed for indoor-outdoor use with a 248B wiring connection.
Yes. Its marine-duty encapsulation, copper windings, and NEMA 3R enclosure are tailored to withstand salt spray, vibration, and humidity. UL Listed certification confirms compliance with safety standards, and the unit supports shipboard distribution of critical loads like HVAC and instrumentation while maintaining reliable electrical isolation in harsh environments.
The transformer is UL Listed, indicating compliance with safety standards. It employs a NEMA 3R enclosure suitable for indoor-outdoor service, and uses copper windings designed for durability in harsh marine environments. These features, along with documented tapping and Weathershield characteristics, support regulatory acceptance and long-term reliability on vessels and offshore platforms.
Warranty follows Eaton policy: one year from installation or eighteen months from shipment, whichever occurs first. Eaton provides the specification sheet and catalog references for ongoing maintenance planning, along with technical support to assist with installation, commissioning, and continued operation of the transformer in demanding marine environments.