This 120A thermal automatic circuit breaker offers advanced protection in high-consumption electrical installations onboard. Developed by Blue Sea, it stands out for its robust construction and watertightness, allowing use even in bilges and engine rooms where moisture and corrosive elements are common. It ensures automatic cutoff in case of overheating, providing reliability in protecting critical equipment.
Technical Specifications
| Type | Watertight Thermal Automatic Circuit Breaker |
| Nominal current | 120A |
| Watertight rating | Full |
| Recommended location | Bilge, engine compartment |
| Brand | Blue Sea |
| Reference | BS7146 |
Advantages
- Total protection against overloads in main power supply lines.
- Watertight casing resistant to corrosion, water, and dust.
- Suitable for installation in areas exposed to humid or challenging environments.
Recommended Applications
- Protection of main circuits on yachts, launches, and professional boats.
- Frequent use in bilges and engine compartments where watertightness is essential.
- Safe cutoff of large loads like windlasses, inverters, bow thrusters, etc.
Installation and Use Advice
- Ensure the breaker is mounted on a flat, sturdy surface.
- Make electrical connections with suitable terminals for high currents.
- Keep junction points clean and dry whenever possible.
Maintenance and Safety
- Check sealing integrity periodically in humid environments.
- Verify correct mechanism operation each season.
- Replace the breaker if internal corrosion or disconnection failures are detected.
Compatibility and Replacement
- Compatible with most high-current electrical distribution systems.
- Perfect for replacing aged or damaged breakers on boats of any length.
