The Eaton Bussmann LKN-400 is a 400 amp, 250 volt Class H renewable fuse link engineered for robust overcurrent protection in commercial and industrial electrical systems. Featuring a time-delay super lag characteristic, this fuse link minimizes nuisance openings from temporary overloads while maintaining dependable circuit protection. Designed for use with compatible Class H fuse holders, the LKN-400 delivers consistent performance in demanding electrical environments.