Durable, Waterproof Circuit Breakers for Reliable Power Protection Designed for seamless switching and circuit protection, these high-performance breakers offer single-lever operation in a robust, waterproof casing. Recessed mounting holes ensure a clean appearance, while the self-trimming case eliminates the need for additional panels or bezels—making installation effortless with a standard hole saw. Built for high-torque connections, the large clearance around the 5/16" terminal studs accommodates heavy-gauge wire lugs, providing secure and efficient power distribution. With ignition protection, these breakers are safe for use aboard gasoline-powered boats.