Blue Sea Systems 187-Series 50 Amp Circuit Breaker Surface Mount - Model 7139-BSS

Blue Sea 187-Series 50 Amp Circuit Breaker Surface Mount

The Blue Sea Systems 187-Series Circuit Breaker (Model 7139-BSS) offers a reliable solution for circuit protection on boats and other marine applications. Designed with integrated switching and circuit protection, this device simplifies wiring and enhances safety by combining functions into a single compact unit. Its waterproof construction and recessed mounting holes provide a clean appearance and secure installation in harsh environments. The large lever, capable of operating in vertical or horizontal orientation, clearly indicates trip status for easy monitoring. The breaker’s trip-free design ensures it cannot be held in the 'ON' position during fault conditions, protecting your system from potential damage. Built with robust 5/16 M8 terminals, it supports high torque connections suitable for heavy gauge wire lugs, ensuring secure and stable electrical connections. The device is ignition protected, meeting SAE J1171 standards, making it safe for installation aboard gasoline-powered boats, and its thermally responsive bi-metal blade circuit breaker type offers dependable performance. Overall, this circuit breaker provides a high capacity of 50 amps at 48 volts DC, with an interrupt capacity of 5,000 amps at 12 volts, suitable for demanding marine electrical systems. Whether used for main power distribution or critical circuit protection, the Blue Sea 187-Series breaker ensures durability, safety, and ease of use in marine environments.

Features:

• Combines switching and circuit protection into a single device

• Clear, single lever operation for easy trip status monitoring

• Trip-free design prevents holding 'ON' during faults

• Waterproof construction for marine environments

• Recessed mounting holes for a clean appearance

• Large clearance around terminal studs for heavy gauge wire lugs

• Robust 5/16 M8 terminals support high torque connections

• Large lever with vertical/horizontal orientation indicates trip status

• Ignition protected, compliant with SAE J1171 standards