Blue Sea Systems 187 Series DC Circuit Breaker Panel Mount

The Blue Sea Systems 187 Series DC circuit breaker is a panel mount thermal circuit breaker. It gives you switching and circuit protection in one device, so you don't need a separate switch and fuse. It suits marine, boat and other mobile DC electrical systems that need heavy-duty protection.

Key Features:

• Combines switching and circuit protection in a single device
• Clear, single-lever operation
• Trip-free design, so the lever cannot be held on during a fault current condition
• Waterproof, with IP66 rating
• Ignition protected to SAE J1171, so it is safe to install aboard gasoline-powered boats
• Large lever with vertical or horizontal orientation shows trip status
• Recessed mounting holes give a clean appearance
• Large clearance around the terminal studs accepts heavy-gauge wire lugs
• 5/16"-18 (M8) terminal studs give high-torque connections

Construction and Ratings:

• Type III circuit breaker: switchable, manual reset, trip free
• Thermally responsive bimetal blade design
• Thermoset polyester case
• Mounting holes accept #10 (M5) screws
• Terminal stud torque: 75 in-lb (8.47 Nm)
• Operating temperature range: -40°C to 85°C
• CE marked

This breaker is built for dependable overload protection in demanding marine environments. Choose the amperage rating that fits your circuit from the variants available in this family.