Eaton 40NHG000BI-690 is a size NH000 knife-blade fuse-link rated 40 A at AC/DC 690 V with 120 kA breaking capacity, in gL/gG utilisation category per IEC 60269. It carries a combination fuse status indicator for at-a-glance state verification and insulated metal gripping lugs (IMGL) for safer live changeover. Power loss at rated current is 4 W and the fuse is designed for general line and cable protection in low-voltage assemblies. Supplied in packs of three; typical application is feeder protection in industrial switchboards and sub-distributions.