BLUE SEA Circuit Breaker 187 SfcMt 150A The BLUE SEA Circuit Breaker 187 SfcMt 150A is a 150-amp circuit breaker designed for marine applications, ensuring reliable circuit protection. This unit is intended for installation in marine electrical systems, providing safe operation under load conditions. Compatibility & Applications Mounts on panels and enclosures in marine electrical systems. Pairs with 12V and 24V DC systems for safe circuit protection. Replaces standard circuit breakers in various boat electrical setups. Fits installations requiring surface-mounted circuit protection. Integrates into systems requiring compliance with ABYC standards. Wires to battery systems in vessels up to 40 feet in length. The unit is designed for effective circuit protection in demanding marine environments, ensuring operational safety and reliability. It serves as a drop-in replacement for conventional breakers, making it a practical choice for enhancing electrical system integrity in both new builds and refits.