BLUE SEA 2142 Circuit Breaker Medium Duty Push Button 50-Amp. Weatherproof. Can be used as Main, Branch, or 24 hour circuit protection. Compact design. Push-to-reset operation. "Trip Free" design cannot be held "ON" during fault current condition. Ignition protected, Safe for installation aboard gasoline powered boats. Maximum Voltage rating 32-Volts DC and 120-Volts AC. Will also replace Mercruiser 88-806950.