Winter Boat Upgrade Event

New Gander Product  Blue Sea Systems 187-Series Thermal Circuit Breaker, Surface Mount 135A

Item # 350689
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In Stock


  • 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

Product Summary 

The waterproof, weather-resistant Blue Sea Systems 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 accept #10 (M5) screws. Operates in extreme temperatures (-40°C to 85°C). Meets SAE J1171 external ignition protection requirements. CE marked. Waterproof to IP66. Do not use as a switch where high inrush currents such as motor starting are expected.

Amperage: 135A
Maximum Voltage: 48V DC
Interrupt Capacity:
• 5,000A @ 12V DC
• 3,000A @ 24V DC
• 1,500A @ 42V DC

Blue Sea Systems No. 7147

Description Surface-Mount
Amperage 135A