The EATON ELECTRONICS / BUSSMANN MDA-4-R is a miniature slow blow acting fuse with a 4A 250V rating. It comes with a cartridge holder that measures 6.35 X 31.75mm and is made of ceramic material. This fuse is CE, CSA, and UL certified, ensuring reliability and safety for various applications. Whether you need to protect electronic circuits or small electrical devices, the MDA-4-R fuse is an excellent choice. It offers dependable protection against overcurrent conditions while allowing for smooth operation.