ABL Sursum 1173-503

Current rating is the maximum current that a fuse will carry for an indefinite period without too much deterioration of the fuse element.

a group of products which fulfill a similar need for a market segment or market as a whole.

IP (or "Ingress Protection") ratings are defined in international standard EN 6529 (British BS EN 6529:1992, European IEC 659:1989). They are?used to define levels of sealing effectiveness of electrical enclosures against intrusion from foreign bodies?(tools, dirt etc) and moisture.