Bussmann JJS400 Industrial High-Current Fast-Acting Fuse

The Bussmann JJS400 is a 400A Class T fast-acting fuse from the TRON JJS family, designed for high-current industrial protection. It is rated for up to 600V and is built to interrupt faults rapidly to limit damage in power distribution panels, motor drives, and large power supplies. With an interrupting rating up to 200 kAIC at 600V, the JJS400 provides robust protection for high-energy fault conditions in demanding industrial environments. This non-indicating fuse is intended for Class T protection in equipment where fast response is essential. Common applications include protecting power converters, drives, distribution enclosures, and other high-energy electrical systems in manufacturing and process industries.