This automatic fuse holder for car audio modification has excellent power protection functions. It is a resettable circuit breaker that can effectively achieve circuit protection. Made of zinc alloy, it is not only durable but also lightweight, weighing only 0.08 kg, making it easy to install. This fuse holder is designed for a wide range of uses and is suitable for both vehicle and marine applications. With dimensions of 73*58*53 mm, it is compact and does not take up much space. It has an operating voltage range of 12 - 48V, a power of 10W, and a signal - to - noise ratio of 10dB, enabling it to work stably in different environments. It is suitable for general vehicle models and comes in a variety of specifications, including 20A, 30A, 40A, 50A, 60A, 80A, 100A, 120A, 150A, and 200A without a rubber sleeve. It also comes with a rubber sleeve to meet different usage needs. In addition, this product has an authorized self - owned brand and is sold in regions such as Africa, Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East. Its quality is worthy of trust.