Marinco 185050P-01-1 50 Amp Panel Mount Circuit Breaker Ratings: 30-150A; 30V DC, 3000A interrupt capacity Mounting: Panel or surface Operating Temperature: -25 deg F (-32 deg C) to 180 deg F (82 deg C) Storage Temperature: -30 deg F (-34 deg C) to 300 deg F (149 deg C) Complies with SAEJ1625, J1171 and UL1500 (Ignition protected) specifications