Description
Blue Sea 7148 150A Thermal Circuit Breaker | Boat Supply Store
Engineered for demanding DC marine applications, this breaker effectively combines switching and circuit protection. It offers a robust 150 Amp rating and a 5,000 Amp @ 12 Volts DC interrupt rating, ensuring system integrity. Built with a thermoset polyester case and meeting SAE J1171 ignition protection standards, it is essential for gasoline-powered vessels operating in environments like the Gulf Coast.
Key Features
- Integrated Switching consolidates functionality into a single unit.
- Ignition Protected meets SAE J1171 for safe gasoline-powered boat installations.
- Trip-Free Design prevents manual closure against a sustained overload.
- Waterproof Construction ensures durability in harsh marine environments.
- Robust 5/16" Terminals facilitate high-torque connections for heavy gauge wiring.
- Clear Lever Operation provides easy visual indication of trip status.
- Recessed Mounting Holes offer a clean and professional installation appearance.
- Wide Operating Temperature Range (-25°C to +82°C) suits diverse climates.
Specifications
| Product Specifications | |
|---|---|
| Amperage Rating | 150 Amp |
| Series | 187-Series |
| Type | III (Switchable / Manual Reset - Trip Free) |
| Voltage Rating | 48 Volts DC Maximum |
| Interrupt Rating | 5,000 Amperes @ 12 Volts DC |
| Operating Temperature | -25°C to +82°C |
| Ignition Protection | SAE J1171 |
| Case Material | Thermoset Polyester |
| Terminal Size | 5/16" |
| Reset Type | Manual |
Who This Is For
Ideal for marine electricians and boat owners who prioritize reliable, integrated DC circuit protection and switching for systems up to 48V. Essential for builders and owners of gasoline-powered vessels requiring strict adherence to ignition protection standards.
How It Compares
| Feature | Blue Sea 7148 150A Thermal Circuit Breaker | Blue Sea Systems 7147 187 |
|---|---|---|
| Amperage Rating | 150 Amp | 100 Amp, 150 Amp |
| Maximum Voltage Rating | 48 Volts DC | 48 Volts DC, 28 Volts DC |
| Interrupt Rating @ 12V DC | 5,000 Amperes | 5,000 Amperes, 2,500 Amperes |
| Ignition Protection (SAE J1171) | Yes | Yes, Yes |
| Switching Capability | Yes | Yes, Yes |
| Waterproof | Yes | Yes, Yes |
Common Concerns Answered
Why does this breaker sometimes have availability issues?
Specific amperage ratings for specialized marine components can occasionally face supply chain constraints due to high demand and production schedules.
Is this breaker expensive compared to others?
While the initial cost may be higher than basic breakers, the integrated switching functionality, SAE J1171 ignition protection, and superior build quality offer significant long-term value and enhanced safety.
What makes this breaker a better choice than a standard fuse or simple breaker?
This breaker provides resettable overcurrent protection and acts as a manual ON/OFF switch, simplifying wiring and offering superior reliability and safety, especially in ignition-sensitive environments.
Frequently Asked Questions
What is the voltage rating of the Blue Sea 7148 circuit breaker?
The Blue Sea 7148 circuit breaker has a maximum voltage rating of 48 Volts DC.
What is the interrupt rating of the Blue Sea 7148 circuit breaker?
The interrupt rating of the Blue Sea 7148 circuit breaker is 5,000 Amperes at 12 Volts DC.
Is the Blue Sea 7148 circuit breaker ignition protected?
Yes, the Blue Sea 7148 circuit breaker meets SAE J1171 external ignition protection requirements.
What type of circuit breaker is the Blue Sea 7148?
The Blue Sea 7148 is a Type III thermal circuit breaker, featuring switchable capability and a manual, trip-free reset.
Can the Blue Sea 7148 be used on gasoline-powered boats?
Yes, the Blue Sea 7148 is ignition protected (SAE J1171), making it safe for installation aboard gasoline-powered boats.
