The Grote 42V 150A High Amperage Thermal Circuit Breaker is designed to provide reliable protection for your electrical system. these circuit breakers feature black insulators for studs with 1/4" to 28 threads, making them ideal for use in vehicles, buses, RVs and ships. The UL rated 94V-0 housing is made of thermoplastic, making it highly durable and resistant to heat and corrosion. Additionally, these circuit breakers can be employed as DC audio systems and battery chargers. With their high amperage rating and reliable construction, these circuit breakers are sure to provide the protection you need. FleetPride is your First Click in Heavy Duty®.