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