Type “J” Fuse Holders

Open style class J fuse blocks accommodate all class J fuses ranging from 0-600A, 600V. A choice of
screw, pressure plate, box and special order stud connectors fit a wide range of stranded or solid copper
or aluminum wire. Insulators are either molded glass-filled polycarbonate (GFPC) or phenolic with
verified dielectric strength in excess of 2500V. SJ fuse blocks are more compact than the traditional
offering and feature a unique adder block configuration for multi-pole field assembly. All fuse clips are
made of high conductivity tin-plated copper, with a choice of spring reinforced or non-spring reinforced

  • All class J fuse blocks meet the requirements of UL4248 (formerly UL512)
  • UL listed Guide IZLT, File E52283
  • CSA certified class 6225, File 32169

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