Mersen Class J fuse blocks accommodate all Class J fuses
All Class J fuse blocks meet the requirements of UL4248 (formerly UL512)
Choose between screw, pressure plate, box and special order stud connectors
All fuse clips are made of high conductivity tin‑plated copper, with a choice of spring reinforced or non‑spring reinforced clips
Insulators are either molded glass‑filled polycarbonate (GFPC) or phenolic with verified dielectric strength in excess of 2500V. 30A, 60A and the new 100A SJ fuse blocks feature a unique expander block configuration which can be snapped onto 1‑, 2‑, or 3‑pole blocks to form multi‑pole segmented blocks of as many poles as desired.
Space saving options in the 30A and 100A configurations