Blue Sea Systems 187 Series Thermal Circuit Breaker, Surface Mount 25A 48V DC

Ensure robust electrical safety and reliable power control with the Blue Sea Systems 187 Series Thermal Circuit Breaker. Designed for demanding marine environments, this surface-mount breaker expertly combines essential switching and circuit protection into a single, compact device. Its ignition-protected and waterproof design makes it ideal for safe installation aboard gasoline-powered boats, providing peace of mind on every voyage. Upgrade your vessel's electrical system with dependable Blue Sea Systems protection today.

• Integrated Protection: Combines switching and circuit protection functions into one efficient unit, saving space and simplifying wiring.
• Marine-Grade Safety: Meets SAE J1171 external ignition protection requirements, ensuring safe operation in gasoline-powered boat engine compartments.
• "Trip Free" Design: Cannot be held "ON" during an overcurrent fault condition, enhancing safety and preventing system damage.
• Durable Waterproof Construction: Rated IP66 for protection against powerful water jets and harsh marine conditions.
• Robust Performance: Rated for a maximum of 48 Volts DC and features high interrupt capacities up to 5,000 Amperes at 12V DC, 3,000 Amperes at 24V DC, and 1,500 Amperes at 48V DC.
• Wide Operating Temperature: Functions reliably across extreme temperatures from -40°C to +85°C (-40°F to +185°F).
• Heavy-Duty Terminals: Equipped with robust 5/16" (M8) studs with a recommended torque of 75 in-lbs (8.47 Nm) to accept heavy gauge wire lugs, ensuring secure, high-current connections.
• Clean Installation: Features recessed mounting holes and a self-trimming case for a professional, flush appearance without the need for additional bezels.
• Clear Status Indication: A large lever with vertical/horizontal orientation provides an immediate visual indication of the circuit breaker's trip status.
• Resilient Casing: Constructed with a durable Thermoset Polyester case for long-lasting resistance to environmental stressors.

Ideal for use in marine DC electrical systems, including those for windlasses, inverters, and general heavy-duty loads requiring both switching and circuit protection.