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Blue Sea Systems 7148 187 Series Thermal Circuit Breaker 150 Amp Surface Mount

Manufacturer

Blue Sea Systems

<p>When electrical reliability can mean the difference between a successful voyage and a dangerous situation, marine professionals and enthusiasts turn to Blue Sea Systems. Founded in 1992, this American manufacturer has built a reputation for creating electrical components specifically engineered to withstand the unforgiving marine environment. Every product reflects a commitment to safety standards and real-world performance that has made Blue Sea Systems a leading name in marine and specialty vehicle electrical systems.</p> <h3>Engineering for the Marine Environment</h3> <p>Blue Sea Systems develops and manufactures dependable AC and DC electrical products for marine and specialized vehicle applications, designed in the USA and engineered to excel in challenging environments. The marine environment presents unique challenges—salt spray, constant vibration, temperature extremes, and moisture exposure—that can quickly degrade inferior electrical components. Blue Sea Systems addresses these challenges through careful material selection, rigorous testing protocols, and designs that prioritize both safety and serviceability. Their components are engineered for marine use and align with the intent of ABYC E-11: AC and DC Electrical Systems on Boats and relevant USCG electrical regulations.</p> <h3>Commitment to Safety Standards</h3> <p>Safety standards aren't just guidelines for Blue Sea Systems—they're fundamental to every product design. All Blue Sea Systems marine battery disconnect switches comply with the ABYC C-7 certification, demonstrating their commitment to meeting and exceeding industry safety requirements. The company maintains ABYC-certified employees across multiple departments, from engineering to technical support, ensuring deep expertise in marine electrical system design and installation standards.</p> <h3>Comprehensive Product Range</h3> <p>Blue Sea Systems offers an extensive catalog designed to address every aspect of marine electrical systems. Their <a href="/7262-blue-sea-systems-circuit-breakers-200260">circuit breakers</a> provide resettable overcurrent protection with trip-free designs and clear trip indication for quick diagnostics. For power management, their <a href="/7262-blue-sea-systems-battery-switches-manual-200149">battery switches</a> offer reliable methods for controlling battery banks and disconnecting loads during storage or emergencies, with ABYC C-7 compliance guaranteed.</p> <p>Monitoring system health is critical aboard any vessel, which is why their <a href="/7262-blue-sea-systems-battery-monitors-volt-meters-200146">battery monitors and volt meters</a> provide accurate real-time data to help operators make informed decisions about power usage and charging. The company's <a href="/7262-blue-sea-systems-terminal-blocks-bus-bars-201059">terminal blocks and bus bars</a> create organized, serviceable connection points that simplify installation and future modifications. For keeping batteries properly charged, Blue Sea Systems offers <a href="/7262-blue-sea-systems-battery-chargers-200141">battery chargers</a> engineered with features like automatic charging relay compatibility and proper charge profile management.</p> <h3>Built by Boaters, for Boaters</h3> <p>Blue Sea Systems was founded based on a commitment to create innovative high quality marine electrical products to improve the safety, simplicity, and reliability of boating, with employees who are active boaters applying their passion to designing, developing, and building products. This firsthand experience translates into practical features like modular layouts, standardized footprints, and installer-centric designs that streamline panel work and serviceability. The result is a product line that addresses real challenges faced on the water, backed by comprehensive technical documentation and support resources that help both professionals and DIY enthusiasts complete installations with confidence.</p>

Part Number

7148
06/01/2036 11:34 AM
Sale Price

$92.64

2 left at this price

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Blue Sea Systems 7148 is a 150-amp thermal circuit breaker from the 187 Series, designed for surface mount installation in marine DC electrical systems. This switchable circuit breaker combines circuit protection and switching functionality into a single robust device, making it ideal for high-current applications on boats and RVs.

Key Features:

  • Type III switchable design with manual reset and trip-free operation that cannot be held "ON" during fault conditions
  • Thermally responsive bi-metal blade technology for reliable overcurrent protection
  • Waterproof construction with thermoset polyester case for harsh marine environments
  • SAE J1171 ignition protection certified—safe for gasoline-powered vessels
  • Clear single-lever operation with vertical/horizontal orientation for easy trip status indication
  • Recessed mounting holes provide a clean, professional appearance
  • Robust 5/16" terminal studs with large clearance accept heavy gauge wire lugs and provide high torque connections

Technical Specifications:

  • Current Rating: 150 Amperes
  • Voltage Rating: 48 Volts DC Maximum
  • Interrupt Rating: 5,000A @ 12V DC, 3,000A @ 24V DC, 1,500A @ 42V DC
  • Operating Temperature Range: -25°C to +82°C (-13°F to 180°F)
  • Terminal Size: 5/16" studs

This circuit breaker meets all SAE J1171 external ignition protection requirements and is suitable for protecting high-current circuits in marine, RV, and other DC power applications. The trip-free design ensures safe operation even when manually overridden during fault conditions.

WarningWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (DEHP) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Products specifications

Amps

150

Mount Type

Surface

Great experience with Autoplicity. Found the site through a google search. Had the best price on the product I was looking for. Ordered on Saturday had the package with standard shipping by Tuesday. Product as promised and no issues. Would definitely recommend and purchase from again. Thanks.

Great price for percys

Great customer service. Fast order processing. Hassle free transaction.

Great price and fast shipping, beat auto anything by a mile.

Quick find, and payment

Great Price!!<br>Fast Shipping!!<br>Would definitely use again....

This part has been discontinued years ago, nice to find one.

had the brand i was looking for and at a really good price

Awesome prices and fast quality shipping. Order Number: 6095<br>

Great and easy to order.

Cheapest place to buy the tires I was looking for. Fast shipping as well.

Best price for an expired item around, though more options in shipping would be appreciated. Ordered saturday night and item shipped tuesday morning, saved about 30% off of the originally planned purchase price. Definitely will use them again in the future.

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