Medium duty circuit protection for 25 to 150 Ampere. Ignition protected (conforming to SAE J1171). Safe for installation aboard gas-powered boats. Weather resistant. Combines switching and circuit breaker function into one unit. ôTrip Free ö - cannot be held closed after trip. Specifications: Interrupt Capacity 3000 Amperes, Circuit Breaker Type Thermal, Body Material Phenolic. Terminal studs 1/4-28. Maximum Voltage 42 Volts DC.