Blue Sea Systems 187-Series Thermal Circuit Breaker, 80A, 48V DC, Surface Mount

Ensure reliable and safe electrical protection in demanding environments with the Blue Sea Systems 187-Series Thermal Circuit Breaker. This robust, surface-mount breaker combines switching and circuit protection into a single, compact device, ideal for safeguarding critical DC electrical systems in marine vessels and other harsh applications. Engineered with a 'Trip Free' design, it guarantees that the circuit cannot be held ON during a fault condition, providing an essential layer of safety. Upgrade your electrical system with Blue Sea Systems' trusted performance and advanced protection.

• High Amperage Capacity: Rated for 80 Amps to effectively protect medium-duty DC loads.
• Wide Voltage Compatibility: Supports up to 48 Volts DC, suitable for a broad range of marine and vehicle electrical systems.
• Enhanced Safety: Type III - Switchable / Manual Reset - Trip Free design prevents holding the circuit ON during an overcurrent event.
• Durable Construction: Features a thermally responsive bi-metal blade and a robust thermoset polyester case for long-lasting performance in challenging conditions.
• High Interrupt Rating: Capable of interrupting 5,000 Amperes at 12V DC, 3,000 Amperes at 24V DC, and 1,500 Amperes at 48V DC, offering superior fault protection.
• Extreme Temperature Resilience: Operates reliably across a wide range of temperatures, from -25°C to +82°C.
• Ignition Protected: Meets SAE J1171 external ignition protection requirements, making it safe for installation aboard gasoline-powered boats.
• Waterproof Design: IP66 rated, providing excellent protection against water intrusion from heavy seas and spray.
• Secure Connections: Equipped with robust 5/16"-18 terminals designed for high torque connections and accommodating heavy-gauge wire lugs.
• Clean Installation: Surface mount design with recessed mounting holes ensures a tidy and professional appearance.

Ideal for protecting circuits for high-load devices such as windlasses, thrusters, and inverters in various marine and automotive DC electrical systems.

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.