Blue Sea Systems 187-Series Circuit Breaker

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RETAIL: $84.99
WOLF'S PRICE: $69.99
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Blue Sea Systems 187-Series Circuit Breaker


  • Combines switching and circuit protection into a single device
  • Clear, single lever operation
  • "Trip Free" design cannot be held "ON" during fault current condition
  • Waterproof
  • Recessed mounting holes for clean appearance
  • Large Clearance around terminal studs accept heavy gauge wire lugs
  • Robust 5/16 M8 terminals provide high torque connections
  • Large lever with vertical/horizontal orientation provides indication of trip status
  • Ignition protected - Safe for installation aboard gasoline powered boats, however, do not use as a switch where high inrush currents are expected.


  • Maximum Voltage Rating: 48 Volts DC
  • Mounting: Panel Mount
  • Circuit Breaker Type: Thermally responsive Bi-metal blade
  • Terminal Stud Torque: 75 in-lb (8.47 Nm)
  • Interrupt Capacity: 5,000 A@12V DC, 3,000A@24V DC, 1,500A@42V DC 
  • Minimum Operating Temperature: -40 degrees C 
  • Maximum Operating Temperature: 85 degrees C
  • Case Material: Thermoset Polyester
  • Circuit Breaker Class: Type III - switchable/manual reset - trip free
  • Mounting Hole: Accept #10 (M5) Screw
  • Terminal Stud Size: 5/16" - 18
  • CE Marked
  • Meets SAE J1171 external ignition protection requirements
  • IP66—withstands water from heavy seas


View AllClose We regret that we currently cannot ship overseas, outside of the United States.

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to