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Blue Sea 187-Series Thermal Circuit Breakers

Key Features

  • Combines switching and circuit protection

  • Ignition protected

  • "Trip Free": cannot be held closed after trip

  • Breaker type: Thermally responsive bi-metal blade

  • Waterproof to IP66

Our Price   $71.99 - $76.99
Choose Your Item Below


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84926 Surface-Mount30A$76.99
Ships within 2-4 business days
84929 Surface-Mount50A$71.99
Ships within 2-4 business days
84934 Surface-Mount100A$76.99
Low Stock
84936 Surface-Mount120A$76.99
Ships within 2-4 business days
84973 Panel-Mount30A$76.99
Low Stock
84975 Panel-Mount40A$71.99
Ships within 2-4 business days
84985 Panel-Mount150A$76.99
Ships within 2-4 business days
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Product Description
blue_sea_systems The waterproof, weather-resistant Blue Sea Thermal Circuit Breaker combines switching and circuit protection into one unit. Large lever with vertical/horizontal orientation provides clear operation and indication of trip status. "Trip Free" design cannot be held ON during fault current condition. Ignition protected for safe installation aboard gasoline powered boats. Thermally responsive bi-metal blade circuit breaker with manual reset falls into the Type III class. Thermoset polyester case. Recessed mounting holes with a lot of clearance for heavy-gauge wire lugs with 5/16" M8 terminals for high-torque connections (75 in-lb). Mounting holes on surface mount model accept #10 M5 screws. Operates in extreme temperatures (-40C to +85C). Meets SAE J1171 external ignition protection requirements. CE marked. Waterproof to IP66. Not suitable for direct control of high inrush loads such as motor starting.

Interrupt Rating:
• 5,000A @ 12V DC
• 3,000A @ 24V DC
• 1,500A @ 42V DC

Max Voltage: 48V DC