The Littelfuse 0FLQ6.25T is a 6.25A slow blow cartridge fuse rated for 500VAC/300VDC. It features a 10kA breaking capacity and is housed in a 5AG, 10mm x 38mm (Midget) package requiring a holder.
The F61C500V25A is a 25A, 500V fast blow cartridge fuse from Eaton - Electronics Division. It requires a holder and is suitable for electrical and industrial applications.