Type:Single Pole Thermal Type Breakers Ratings: 100A Operating Temperature: -25F (-32C) to 180F (82C) Storage Temperature: -30F (-34C) to 300F (149C) Applications: Typically used in auxiliary and accessory circuits trucks, buses, RVs and marine applications. Others might include battery chargers and DC audio systems. Series 181, 184 & 185 are sealed for engine compartment and bilge area applications. Housing: Thermoset plastic; UL rated 94VO; 311F (155C). Stud insulators are provided on covered units with F (Surface Mount) bases Mounting: surface Indicator: Series 184 & 185 have a unique reset mechanism which provides visible indication of tripped condition Approvals: Complies with SAEJ1625