Blue Sea Systems 7139 187-Series 50 Amp Thermal Circuit Breaker - Surface Mount, Waterproof, Trip Free

• 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 7139 187-Series thermal circuit breaker offers reliable circuit protection with integrated switching, making it ideal for marine and automotive applications. Designed with a thermally responsive bi-metal blade, this 50 Amp breaker combines safety and convenience in a compact surface-mount design. Its waterproof casing and recessed mounting holes ensure a clean appearance and protection against harsh environmental conditions, making it suitable for installation aboard gasoline-powered boats and other rugged environments. The large lever, which can be oriented vertically or horizontally, provides clear indication of trip status and is engineered for easy operation with a single, clear lever action. The robust 5/16-inch terminals accommodate heavy-gauge wire lugs, facilitating high-torque connections necessary for demanding electrical systems. All components meet SAE J1171 external ignition protection standards, ensuring safe operation in ignition-protected environments. This breaker features a trip-free design that prevents the device from being held in the ON position during fault conditions, enhancing safety and system integrity. Its case is constructed from durable thermoset polyester, capable of withstanding temperatures from -25°C to +82°C, ensuring reliable performance across a wide range of operating environments. The circuit breaker is rated for a maximum of 48 volts DC, with interrupt ratings up to 5,000 Amperes at 12V DC, ensuring it can handle high fault currents effectively. Whether protecting critical circuits or providing a convenient switch, the Blue Sea Systems 7139 breaker combines durability, safety, and ease of use in one comprehensive package.

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 fault conditions

• Waterproof construction suitable for marine environments

• Recessed mounting holes provide a clean, professional appearance

• Large clearance around terminal studs accommodates heavy gauge wire lugs

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

• Large lever with adjustable orientation indicates trip status

• Ignition protected for safe installation aboard gasoline-powered boats