The WEIDMULL 0431400000 is a reliable 6.3A, 250V fast-acting fuse designed to quickly interrupt current in fault conditions. Its 5x20mm size makes it suitable for various applications where rapid protection is essential.This WEIDMULL fuse, model number 0431400000, is a fast-acting (FST) fuse with a 6.3A amperage rating and a 250V voltage rating. It features a standard 5x20mm size.