Blue Sea Systems 187-Series Thermal Circuit Breaker, 40A Surface Mount

Ensure robust electrical system protection and control with the Blue Sea Systems 187-Series Thermal Circuit Breaker. Designed for demanding marine environments, this 40 Amp, 48V DC surface-mount breaker intelligently combines switching and high-interrupt circuit protection in a single, reliable device. Its ignition-protected design makes it safe for installation aboard gasoline-powered boats, providing peace of mind on the water. Upgrade your vessel's electrical safety and efficiency today.

Key Benefits & Features:

• Integrated Protection: Combines switching and circuit protection into a single, space-saving device.
• Marine-Grade Durability: Features a waterproof (IP66 rated) design and Thermoset Polyester case for resilience against harsh conditions.
• Ignition Protected: Meets SAE J1171 external ignition protection requirements, ensuring safe installation on gasoline-powered boats.
• High Capacity Terminals: Robust 5/16" (M8) terminals provide ample clearance for heavy-gauge wire lugs and allow high-torque connections for secure wiring.
• "Trip Free" Safety: Prevents the breaker from being held in the ON position during fault conditions, enhancing overall system safety.
• Clean Installation: Recessed mounting holes contribute to a clean, professional appearance.
• High Interrupt Rating: Capable of interrupting 5000 Amperes at 14V DC, 3000 Amperes at 28V DC, and 1500 Amperes at 48V DC, offering significant fault current protection.
• Wide Operating Temperature: Functions reliably across an operating temperature range of -25°C to +82°C.

Common Applications:

• Ideal for protecting marine loads such as windlasses and other high-current DC circuits.

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.