150 Amp Manual Reset Hi-Amp Circuit Breaker (1 Per Quantity) These breakers operate until tripped and will remain tripped (in the off position) until indicator lever is manually reset to reactivate or close the open circuit. Typically used in primary feeder circuits in trucks buses RVs and marine applications; also used in battery charges and welding equipment. Operating temperature: -25 F to 180 F. Storage temperature: -30 F to 300 F. Splash and dust-proof.