A. This circuit breaker is designed for the audio system modification of cars, RVs, and yachts. It has good performance and wide applicability. As an automatic circuit breaker switch and resettable fuse holder, it can effectively handle overload and short - circuit problems and provide reliable protection for electrical equipment. B. In terms of design, it fully considers the needs of various usage scenarios to ensure precise adaptation to common vehicle models. Whether it is a car, an RV, or a yacht, it can be easily installed and used. The product is available in a variety of specifications, including 30A, 40A, 50A, 60A, 70A, 80A, 100A, 120A, 150A, 200A, 250A, 300A, etc., which can meet the requirements of different power devices and flexibly handle diverse circuit protection needs. C. This product is not only suitable for audio system modification but also plays an important role in other electrical systems, contributing to the stable operation of the entire system. It is sold in multiple regions around the world, such as Africa, Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East, and its quality is widely recognized. In addition, it has an authorized private brand, ensuring good performance. D. It is a good choice for protecting electrical equipment.