J Fuses
National Fuse stocks a large selection of class J from some of the top manufacturers in the industry. The Littelfuse JTD-8-ID boasts ratings up to 600 Amps and features a current limiting design and a blown fuse indicator for optimal safety, and Its compact size makes it perfect for small circuits. We also offer the Bussmann LPJ-9SP. With a high degree of current limitation, its small size, and a dual-element time delay, this little guy offers superior circuit protection.
If you are in need of a class J fuse, look no further than National Fuse. Our helpful team is available to assist you in finding the proper fuse for your needs at a competitive price. Please contact us by phone if you have any questions at 866-567-9358, or pop into our office at 19100 Old Detroit Road in Rocky River, Ohio.
If you already know what you need, our entire catalog is available 24 hours a day online. Your online order with National Fuse will be promptly processed, packaged, and shipped via UPS of Fed Ex so you can get the J fuse you need to get the job done.
Showing 1–16 of 412 results
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60306SJ
30A 600V J 1Pole Fuse Block Mersen 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… Read more »
$35.03 Add to cart -
60308SJ
30A 600V 3P J BLOCK Mersen 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… Read more »
$98.06 Add to cart -
60316SJ
30A 600V 1P J FUSE BLOCK Mersen 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… Read more »
$29.83 Add to cart -
60326SJ
30A 600V 1POLE J FUSE BLOCK Mersen 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… Read more »
$31.97 Add to cart -
60607J
60A 600V 2P J BLOCK Class J Fuse Block Box Lugs A choice of screw, pressure plate, box and special order stud connectors fit a wide range of stranded or solid copper or aluminum conductors. Insulators are either molded glass-filled polycarbonate (GFPC) or phenolic with verified dielectric strength in excess of 2500V. 30A, 60A and… Read more »
$74.44 Add to cart -
60608T
60A 600V 3P T BLOCK 3-Pole Class T Fuse Block Mersen Class T fuse blocks accommodate Class T fuses up to 600A. Insulators are either durable, glass-filled polycarbonate (GFPC) or phenolic with verified dielectric strength in excess of 2500V. Mersen is the only manufacturer to offer Class T blocks with copper connectors. Unique integral… Read more »
$64.63 Add to cart -
61008J
100A 600V J 3P FUSE BLOCK Fuse Block 3 Pole Class J A choice of screw, pressure plate, box and special order stud connectors fit a wide range of stranded or solid copper or aluminum conductors. Insulators are either molded glass-filled polycarbonate (GFPC) or phenolic with verified dielectric strength in excess of 2500V. 30A, 60A… Read more »
$200.31 Add to cart -
61008SJ
100A 600V 3P J BLOCK Mersen 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… Read more »
$143.37 Add to cart -
62001J
200A 600V 1P J BLOCK A choice of screw, pressure plate, box and special order stud connectors fit a wide range of stranded or solid copper or aluminum conductors. 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… Read more »
$219.19 Add to cart -
62003J
200A 600V 3P J BLOCK A choice of screw, pressure plate, box and special order stud connectors fit a wide range of stranded or solid copper or aluminum conductors. 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… Read more »
$657.54 Add to cart -
64003J
400A 600V 3P J BLOCK Fuse Block 3 Pole Class J A choice of screw, pressure plate, box and special order stud connectors fit a wide range of stranded or solid copper or aluminum conductors. Insulators are either molded glass-filled polycarbonate (GFPC) or phenolic with verified dielectric strength in excess of 2500V. 30A, 60A and… Read more »
$1,226.64 Add to cart -
64003R
400A 600V 3P R BLOCK Mersen Class H, K and R fuse blocks accommodate all Class H, K and R 250 and 600V 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… Read more »
$1,327.59 Add to cart -
64031J
400A 600V 1P J BLOCK A choice of screw, pressure plate, box and special order stud connectors fit a wide range of stranded or solid copper or aluminum conductors. 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… Read more »
$426.84 Add to cart -
64033J
400A 600V J 3P BLOCK A choice of screw, pressure plate, box and special order stud connectors fit a wide range of stranded or solid copper or aluminum conductors. 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… Read more »
$977.66 Add to cart -
6631J
600A 600V 1P CLASS J These fuse blocks are compatible with 600VAC UL Class J fuses that provide a high interrupting rating for protecting against short circuits. Fuse blocks with spring-reinforced clips hold fuses tightly in place to maintain full electrical contact.
$694.53 Add to cart -
6633J
600A 600V 3PJ BLOCK A choice of screw, pressure plate, box and special order stud connectors fit a wide range of stranded or solid copper or aluminum conductors. 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… Read more »
$1,984.28 Add to cart
