Blue Sea Systems presents the 187-Series 50A panel-mounted circuit breaker, model 7039-BSS. This all-in-one device combines switching and circuit protection. It features a clear single-lever operation and a 'Trip Free' design that won't stay 'ON' during fault currents. It's waterproof, with recessed mounting holes for a neat look. The large clearance around terminal studs can accept heavy gauge wire lugs, and the robust 5/16 M8 terminals offer high-torque connections. The large lever, with vertical/horizontal orientation, shows the trip status. It's ignition protected, making it safe for gasoline-powered boats. Note: Don't use it as a switch for high inrush currents. Specifications: Amperage 50A, Max Voltage 48vDC, Panel Mount, Thermally responsive Bi-metal blade breaker type, Terminal Stud Torque 75 in-lb (8.47 Nm), Interrupt Capacity 5000A @ 12V, 3000A @ 24V, 1500A @ 42V, Min Operating Temp -40°C, Max Operating Temp 85°C, Case Material Thermoset Polyester, Circuit Breaker Class Type III - switchable/manual reset - trip free, Mounting Hole accepts #10 (M5) Screw, Terminal Stud Size 5/16' - 18.
Using this Blue Sea circuit breaker is easy. First, make sure to mount it on a panel using #10 (M5) screws through the recessed mounting holes for a clean look. Connect heavy gauge wire lugs to the terminal studs with a 75 in-lb (8.47 Nm) torque. You can operate it with the large lever, which will show the trip status. Remember, don't use it as a switch where high inrush currents are expected. When it comes to maintenance, keep it in a temperature range between -40°C and 85°C. Since it's waterproof, it can handle some moisture, but avoid submerging it. Also, because it's ignition protected, it's safe to use on gasoline-powered boats. If it trips, simply reset it manually as it's a Type III switchable breaker.
