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Sea-Dog Line 420878-1 Hi-Amp Resettable Circuit Breaker 120 Amp

Manufacturer

Sea-Dog Line

<p>For over a century, Sea-Dog Line has stood as a cornerstone of the marine hardware industry, delivering innovative solutions that meet the demanding needs of recreational and commercial boaters. Founded in the early 1920s by entrepreneur Hans "Action" Broson Sneve, the company began with a unique sales approach—showcasing marine hardware aboard a 55-foot cruiser that sailed from Alaska to Mexico. This hands-on philosophy continues to shape Sea-Dog's commitment to producing hardware that performs reliably in the harshest saltwater environments.</p><h3>Industry-Leading Marine Hardware Manufacturing</h3><p>Based in Everett, Washington, Sea-Dog Corporation operates a 75,000-square-foot warehouse stocking over 8 million parts and runs an injection molding facility with 16 machines producing more than 17 million components annually. The company's extensive product line spans anchoring systems, deck hardware, electrical components, plumbing fittings, and lighting solutions—all engineered with marine-grade materials like stainless steel, brass, and UV-resistant polymers. Sea-Dog's recognition as a multiple-time NMDA Supplier of the Year underscores the brand's excellence in both product quality and customer service, while their on-staff ABYC-certified marine technician provides invaluable installation and technical support.</p><h3>Premium Marine Components for Every Vessel</h3><p>Sea-Dog's <a href="/7549-sea-dog-line-windshield-washers-wipers-replacement-motors-201195">windshield washers, wipers, and replacement motors</a> deliver crystal-clear visibility during inclement weather, with both manual and electric options featuring corrosion-resistant stainless steel arms and UV-stable blades designed specifically for marine windshield applications. Their <a href="/7549-sea-dog-line-electric-horns-200351">electric horns</a> include the popular MaxBlast line, which passed rigorous 600-hour salt spray testing while meeting US Coast Guard COLREGS and ABYC standards for audible warning devices. For fuel and water system integrity, Sea-Dog's <a href="/7549-sea-dog-line-deck-fills-200307">deck fills</a> provide secure, leak-free access points constructed from durable stainless steel with snap-in designs that resist corrosion in saltwater environments.</p><p>When maneuvering in low-light conditions, Sea-Dog's <a href="/7549-sea-dog-line-docking-lights-200335">docking lights</a> offer bright LED illumination with minimal power draw, featuring injection-molded housings that withstand impacts and temperature extremes. Proper airflow is essential for preventing moisture buildup below deck, and Sea-Dog's <a href="/7549-sea-dog-line-hose-and-cowl-vents-200534">hose and cowl vents</a> deliver reliable ventilation with low-profile designs that include snap-in deck plates for bilge applications or dorade box compatibility for cabin use. Each product reflects Sea-Dog's century-long dedication to manufacturing hardware that recreational and professional mariners can trust, voyage after voyage.</p>

Part Number

420878-1
06/01/2036 6:52 PM
Sale Price

$45.64

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Sea-Dog Line 420878-1 is a high-amperage resettable inline circuit breaker designed for heavy-duty marine, RV, and automotive applications requiring 120 amp protection. This breaker features a manual reset button that allows for quick circuit restoration after tripping, eliminating the need for fuse replacement.

Key Features:

  • 120 amp rating for high-current accessories and systems
  • Manual reset button for convenient circuit restoration
  • Compatible with both 12VDC and 24VDC electrical systems
  • Splash-proof construction for protection in wet environments
  • Ignition protected design suitable for gasoline-powered vessels
  • Constructed of durable injection molded nylon, polycarbonate, and stamped brass
  • Features #10-32 studs with nuts for secure connections
  • Copper post for battery/power input, silver post for protected output
  • Complies with SAE Standard J553 and SAE J1171

This heavy-duty circuit breaker provides reliable overcurrent protection for winches, trolling motors, inverters, and other high-amperage accessories. The vibration and shock-resistant design ensures dependable performance in demanding marine and off-road conditions.

Service was great. I am still waiting for my return label.

item arrived quickly & packaged VERY WELL. very impressed with the quality of the headlights. would purchase again.

Best price and availability.

Good

Found the part I was needing at a good price

Fast shipping easy transaction!

All worked out great. Fast delivery and great price.

Positive purchasing experience.

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