Vintage BS 1361 Industrial Cartridge Fuse

This is a vintage industrial-grade cartridge fuse designed for electrical overcurrent protection. The item features a cylindrical body construction, likely ceramic or a highly durable composite material, oriented between two metallic end caps, which appear to be either copper or brass with a dull nickel or silver-toned plating. The central barrel is wrapped in a white printed label displaying technical specifications: it is 'ASTA CERTIFIED' (Short Circuit Testing Liaison), rated for 415V, and adheres to the BS 1361 British Standard. The labeling also indicates a specific date or model number associated with '1971' and mentions '50W', likely and indicator of power dissipation or a specific load rating. Physically, the item shows significant signs of age and patina. The metallic end caps exhibit surface oxidation, fine scratches, and some localized pitting, suggesting it was once installed in an industrial environment. The paper or plasticized label shows light discoloration and minor peeling at the edges but remains highly legible. The overall size is consistent with standard household or light industrial distribution board fuses of the mid-20th century. Its robust construction reflects the safety standards of the post-war era, emphasizing durability over modern compact designs.