Blue Sea Systems 7043 187-Series 90 Amp Thermal Circuit Breaker for Marine and Vehicle 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
  
• Self-trimming case eliminates the need for mounting panels or trim bezels
  
• Round case permits easy installation with standard sized hole saw
  
• 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 7043 187-Series thermal circuit breaker combines reliable circuit protection with convenient switching in a single device, ideal for marine and automotive applications. Designed with a thermally responsive bi-metal blade, this breaker offers a trip-free operation ensuring that it cannot be held in the ON position during fault conditions, providing enhanced safety and protection for your electrical system. Its waterproof case and recessed mounting holes deliver a clean appearance and secure installation, making it suitable for harsh environments and demanding use.
Built with rugged thermoset polyester material, the case ensures durability and resistance to the elements. The large, easy-to-operate lever with vertical or horizontal orientation provides clear indication of trip status, simplifying troubleshooting and maintenance. The round case design allows for straightforward installation with a standard hole saw, and the large clearance around terminal studs accommodates heavy gauge wire lugs for high-current connections. Robust 5/16-inch terminals enable high torque connections, ensuring reliable electrical contact over time.
The circuit breaker is rated for a maximum of 48 volts DC, with an interrupt capacity of 5,000 amperes at 12 volts, 3,000 at 24 volts, and 1,500 at 42 volts, supporting high-current loads safely. It meets SAE J1171 external ignition protection standards, making it safe for installation aboard gasoline-powered boats. Operating within a temperature range of -25°C to +82°C, the breaker maintains consistent performance in diverse conditions.
Whether used in marine, RV, or vehicle electrical systems, the Blue Sea 7043 breaker offers a dependable solution for circuit management. Its combination of safety features, rugged construction, and user-friendly design ensures long-lasting protection for your electrical circuits and equipment.

Features:

• Combines switching and circuit protection into a single device

• All components meet SAE J1171 external ignition protection requirements

• Clear, single lever operation for ease of use

• Trip Free design prevents holding the breaker ON during faults

• Waterproof construction for reliable operation in harsh environments

• Recessed mounting holes provide a clean appearance

• Self-trimming case simplifies installation without additional panels or bezels

• Round case allows easy installation with standard hole saws

• Large clearance around terminal studs accepts heavy gauge wire lugs

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

• Large lever with vertical/horizontal positioning indicates trip status

• Ignition protected, safe for installation aboard gasoline-powered boats