Blue Sea Systems 187-Series 40 Amp Surface Mount Circuit Breaker (Part 7138-BSS)

Blue Sea 187-Series 40 Amp Circuit Breaker Surface Mount

The Blue Sea Systems 187-Series 40 Amp Circuit Breaker (Part 7138-BSS) is designed for reliable circuit protection and switching in marine and other rugged applications. This device integrates both functions into a single, compact unit, streamlining wiring and reducing clutter. Its clear, single-lever operation allows for easy status monitoring and quick manual control. The trip-free design ensures the breaker cannot be held in the 'ON' position during fault conditions, providing enhanced safety and preventing damage to the electrical system. Waterproof construction makes this circuit breaker suitable for harsh environments, while recessed mounting holes offer a clean appearance and secure installation. The large clearance around the terminal studs accommodates heavy gauge wire lugs, facilitating robust and high-torque connections with the 5/16 M8 terminals. The large, vertically or horizontally oriented lever visibly indicates trip status, enabling quick troubleshooting and system assessment. As an ignition-protected device, it complies with SAE J1171 standards, making it safe for installation aboard gasoline-powered boats. This thermal bi-metal blade circuit breaker is rated for 40 amps at 48 volts DC, with a maximum interrupt capacity of 5000 amps at 12 volts DC, suitable for high-current applications. Proper torque specifications for terminal studs ensure secure connections, supporting durable and reliable performance over time. Please note, this breaker is not intended for use as a switch in high inrush current scenarios, but excels in providing consistent circuit protection in demanding environments. Its robust construction and safety features make it a dependable choice for marine, RV, and industrial electrical systems, ensuring safety, durability, and ease of maintenance in one comprehensive package.

Features:

• Combines switching and circuit protection into a single device

• Clear, single lever operation for easy status monitoring

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

• Waterproof construction suitable for harsh environments

• Recessed mounting holes for a clean and secure installation

• Large clearance around terminal studs for heavy gauge wire lugs

• Robust 5/16 M8 terminals provide high torque connections

• Large lever with vertical/horizontal orientation indicates trip status

• Ignition protected and compliant with SAE J1171 standards

• Rated for 40 amps at 48V DC with a 5000A interrupt capacity