Eaton Bussmann JJS-40 Time Delay Fuse Class T

JJS-40 is Eaton Bussmann's Class T time-delay fuse rated 40 A at 600 V, designed for current-limiting protection in electrical power circuits. As a member of the JJS series, it features ferrule-end terminations for secure panel or bus-bar connections and offers a 200 kAIC interrupting rating at 600 V, ensuring fast fault clearance with minimal conductor damage. The Class T designation indicates time-delay operation, allowing brief overloads such as motor-start surges while still opening on sustained faults; the device is non-indicating for compact installations. This fuse is well-suited for industrial power distribution and motor-drive applications where 40 A protection in a 600 V system is specified and space is at a premium. It is part of Eaton Bussmann's broader 600 V JJS lineup, designed for quick interchange in standard Bussmann fuse holders and panels.