The Littelfuse 600 V Class J blocks offer generous space savings and enhanced value over previous generations, such as indication, snap-to-release DIN-rail mounting and universal mounting holes. Features and Benefits Indication offered on all versions except 200A-600A DIN Rail releasable for all non-knife blade style fuses Only one hand is required to release from DIN Rail (lock open lock closed) Phenolic blocks have side barriers for isolation Spring reinforced fuse clips are standard on 100A and larger blocks. Reinforcing springs are optional on 30A and 60A blocks. Universal mounting holes make for easy replacement Space-saving design — up to 45% smaller than existing blocks Fuse Category General Purpose Fuse Type Class J Fusible Yes Holder Family Fuse Block Indicating No Max Amps 100 Mount Method Bolt-In DIN Rail UL Class J VAC (V) 600 VDC (V) 600