Blue Sea Systems 7146 187-Series 120 Amp Thermal Circuit Breaker for Marine and Automotive Applications

• Combines switching and circuit protection into a single device
  
• All components meet SAE J1171 external ignition protection requirements
  
• Clear, single lever operation
  
• Trip Free design cannot be held ON during fault current condition
  
• Waterproof
  
• Recessed mounting holes for clean appearance
  
• Large clearance around terminal studs accept heavy gauge wire lugs
  
• Robust 5/16 terminals provide high torque connections
  
• Large lever with vertical/horizontal orientation provides indication of trip status
  
• Ignition protected - safe for installation aboard gasoline powered boats

WARNING: 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.

The Blue Sea Systems 7146 187-Series thermal circuit breaker is designed for reliable circuit protection in demanding marine and automotive environments. This surface-mount device integrates switching and circuit protection functions into a single compact unit, simplifying installation and maintenance. Built with a thermally responsive bi-metal blade, it automatically trips under overload conditions, preventing damage to electrical systems. The breaker features a clear, single lever operation for easy status indication and manual reset, ensuring quick response during fault conditions. Its waterproof design and recessed mounting holes provide a clean appearance and enhanced durability, suitable for exposed environments. The large clearance around terminal studs accommodates heavy gauge wire lugs, and the robust 5/16-inch terminals offer high torque connections for secure electrical contact. The large lever can be oriented vertically or horizontally, providing an immediate visual indication of trip status, which is essential for quick troubleshooting and system safety. This breaker is ignition protected, making it safe for installation aboard gasoline-powered boats, and meets SAE J1171 external ignition protection standards. With a maximum voltage rating of 48 volts DC and an interrupt rating of up to 5,000 amperes at 12 volts DC, it offers dependable overcurrent protection for critical systems. The case is constructed from durable thermoset polyester capable of operating in temperatures from -25°C to +82°C, ensuring performance across a wide range of conditions. Whether used in marine, RV, or other vehicle electrical systems, the Blue Sea Systems 7146 provides robust, reliable circuit protection that enhances safety and system longevity.

Features:

• Combines switching and circuit protection into a single device

• Meets SAE J1171 external ignition protection requirements

• Clear, single lever operation for easy status monitoring

• Trip-free design prevents holding the switch during fault conditions

• Waterproof construction for outdoor and marine applications

• Recessed mounting holes for a clean installation

• Large clearance around terminal studs for heavy gauge wire lugs

• Robust 5/16-inch terminals for high torque connections

• Large lever with vertical/horizontal orientation indicating trip status

• Ignition protected for safe installation aboard gasoline-powered boats