BS 7138 - Reliable protection with the 187 Series circuit breaker (40A)

The thermal Blue Sea BS 7138 circuit breaker from the 187 Series offers a combined switch and fuse solution. Designed for surface mounting, it is ideal for use as a main fuse. It reliably protects onboard electrical systems, inverters, or bow thrusters against overloads and short circuits.

Explosion protection and uncompromising marine quality

This circuit breaker meets the highest explosion protection requirements (SAE J1171 / ISO 8846) and can be installed without concern in gasoline-powered boats. It is waterproof to IP66 and optimized for demanding marine applications.

Key benefits at a glance:

• Combined function: Serves as a robust on/off switch as well as overcurrent protection.
• Safe operation: The large switching lever allows for easy resetting even while wearing gloves.
• Fully explosion-proof: Ideal for the engine room.
• Weatherproof: IP66 protected against powerful water jets.

Technical specifications (Blue Sea BS 7138):