The K1812L200DR resettable fuse manufactured by Yongyutai Electronics is an over-current protection component designed for 8V, 2A, 100A, and 4A with a 1812 size and ROHS compliance. It is designed to detect excessive current flow through an electrical circuit, and if that flow exceeds a predetermined level, the fuse will shut off the circuit and prevent further damage. The fuse will then need to be manually reset to resume operation of the circuit. This product is commonly used in automotive, solar, audio/visual, and other industrial applications.