Type 1 auto reset thermal cycling circuit breaker manufactured by Cooper Bussmann. Used in many diverse applications including commercial equipment, trucks, buses, portable generators, welding equipment, and trolling motors. Engineered for durability. Breakers include nuts and washers. Available in 5 amp, 10 amp, 15 amp, 20 amp, 25 amp, 30 amp, 40 amp, and 50 amp capacities. For 12 volt systems.