This thermal circuit breaker combines switching functions and circuit protection into a single device. Clear, single lever operation & mdash; vertical/horizontal orientation provides indication of trip status "Trip Free" design cannot be held "ON" during fault current condition Ignition protected safe for installation aboard gasoline powered boats Vaporproof & waterproof (IP66 - power jetting/heavy seas) Recessed mounting holes for clean appearance Self-trimming case eliminates the need for mounting panels or trim bezels Large clearance around terminal studs accepts heavy gauge wire lugs Robust 5/16" terminals provide high torque connections Round rear casing permits easy installation with standard sized hole saw Interrupt rating 5000A @ 12V DC, 3000A @ 24V DC, 1500A @ 42V DC 48V DC maximum CE marked; meets SAE J1171 external ignition protection requirements