Specifications: *It provides protection and alarm function for the power supply to PCM or other equipment. *Retractable fuse : The fuse may be replaced from the front. *High capacity : Up to 24 power supply circuits, it can be installed in 19 inches and 23 inches or EIA standard racks. *Easy Maintenance: each fuse provides individual circuit to avoid any interruption to the power supply to the adjacent lines during the replacement.