The Blue Sea Systems 187-Series Circuit Breaker is a top - notch panel - mount device with a 135A capacity. Model 7047 - BSS combines switching and circuit protection in one. It features a clear single - lever operation for easy use. The 'Trip Free' design ensures safety during fault currents as it can't be held 'ON'. Being waterproof, it's suitable for various environments. The recessed mounting holes give it a clean look. It has large clearances around terminal studs to accept heavy - gauge wire lugs, and robust 5/16 M8 terminals for high - torque connections. The large lever, with vertical/horizontal orientation, clearly 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: 135A
- Maximum Voltage: 48vDC
- Mounting: Panel Mount
- Circuit Breaker Type: Thermally responsive Bi - metal blade
- Terminal Stud Torque: 75 in - lb (8.47 Nm)
- Interrupt Capacity: 5000A @ 12V, 3000A @ 24V, 1500A @ 42V
- Minimum Operating Temperature: - 40°C
- Maximum Operating Temperature: 85°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
Using this Blue Sea circuit breaker is easy. First, find a suitable panel location for mounting. Use #10 (M5) screws to secure it through the recessed mounting holes. Connect your heavy - gauge wire lugs to the terminal studs. The large clearances around the studs make this connection process straightforward. When operating, just use the single lever to switch it on or off. The lever's orientation will clearly show you the trip status.
There are some important things to note. Don't use this breaker as a switch when high inrush currents are expected. Also, make sure the operating temperature stays between - 40°C and 85°C, as extreme temperatures can affect its performance.
For maintenance, keep the breaker clean and dry. Since it's waterproof, you can give it a gentle wipe if it gets dirty. Periodically check the terminal connections to ensure they're tight. If the breaker trips, reset it manually as it's a Type III switchable/manual reset breaker. If you notice any unusual behavior, it might be time to have it inspected or replaced.
