7. Ceramic Cartridge Fuse for Industrial Equipment

Neha is designing the power input stage of a 230VAC industrial control panel. 

The panel draws up to 4A from the mains supply. She needs a ceramic cartridge fuse at the input for overcurrent and short-circuit protection. 

The fuse should be medium blow (time-delay) to handle brief inrush current during power-on without nuisance tripping. 

The standard fuse size used in the panel is 5mm × 20mm. The fuse must have adequate breaking capacity for mains fault currents. 

The company's approved vendor list (AVL) specifies Littelfuse for circuit protection components, so the part must be selected from Littelfuse on DigiKey. 

Help her select a suitable ceramic cartridge fuse from Littelfuse on DigiKey.