The C55743-000 is a MidiFuse model fast-acting fuse manufactured by Littelfuse. It is a solid-state device that is used to protect electronic circuits from damage due to overcurrent. The fuse is rated at 250VAC, 10A and has a fast-acting response time of less than 1 millisecond. The C55743-000 also contains an ultra-fast blow-open element, which will open the circuit when an overcurrent is detected, protecting the load from damage. Additionally, it is resistant to shock, vibration, and temperature cycling.