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Mersen Fuses - formerly Ferraz Shawmut

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Ferraz Shawmut Class K Fuse Blocks accommodate all Class H and K power fuses. 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. 30, 60 and 100A fuse blocks feature a unique adder block which can be snapped onto 1-, 2- or 3-pole blocks to form multi-pole segmented blocks of as many poles as desired. All fuse clips are made of high conductivity tin-plated copper, with a choice of spring reinforced or non-spring reinforced clips in 30A and 60A. Clips 100A and above are spring reinforced.

Approvals and Compliances

All fuse blocks meet the requirements of UL Std. 512UL Listed, Guide IZLT, File E52283UL Recognized Component, Guide IZLT2, File E52283CSA Certified Class 6225, File 32169RoHS Compliant

AC Rating

  • 250VAC: 30A, 60A, 100A, 200A, 400A, 600A
  • Withstand ratings: w/class H fuses - 10kA, w/class K fuses - 50kA


E52283 (IZLT.E52283)


6225-01 (032169_0_000)