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Cylindrical beige fuse with silver end caps, 2 1/4 inches long, 13/16 inch diameter

Bussmann

Bussmann DFJ-5 5A 600V AC Class J Fast-Acting Fuse

SKU CH-NATN-1P2BG

A 5 A, 600 V AC Class J fast-acting fuse with 200 kA interrupt rating for high-current circuit protection

  • Fast-acting protection clears faults quickly
  • 200 kA interrupt rating handles severe short circuits at 600 V AC
  • 100 kA DC rating covers 450 V DC systems
  • Class J design fits standard CH30J and JM600 fuse blocks
  • Melamine body resists heat and tracking in harsh environments

5A 600V AC Class J Fast-Acting Fuse

The Bussmann DFJ-5 is a Class J fuse rated at 5 amps and 600 volts AC with a 450 volt DC rating. It features a fast-acting, single-element design in a cylindrical melamine body measuring 2-1/4 inches long by 13/16 inches in diameter. The fuse carries an interrupt rating of 200kA at 600V AC and 100kA at 450V DC for high fault current protection.

Electrical panels needing Class J rejection-style

This fuse suits industrial control panels, motor circuits, and transformer primaries requiring Class J fast-acting characteristics. It fits non-rejection fuse blocks including CH30J, JM600, JP600, JT600, and JTN600 series. Buyers needing time-delay characteristics or visual blow indication should look at alternative fuse types as this is a non-indicating, fast-acting model.

Cross-reference compatibility simplifies replacement

The DFJ series crosses directly to Littelfuse LDFJ and Mersen HSJ equivalents, allowing drop-in substitution across brands. Its standard Class J dimensions ensure fit in existing compatible fuse blocks without hardware changes. The melamine body construction provides reliable insulation for the rated voltage levels.

Highlights

  • Fast-acting protection clears faults quickly
  • 200 kA interrupt rating handles severe short circuits at 600 V AC
  • 100 kA DC rating covers 450 V DC systems
  • Class J design fits standard CH30J and JM600 fuse blocks
  • Melamine body resists heat and tracking in harsh environments

Specifications

BrandEATON BUSSMANN

Questions about this item

Which fuse block series will accept this 5 A Class J fuse?

The DFJ-5 fits CH30J, JM600, JP600, JT600 and JTN600 fuse block series.

Can this fuse protect a circuit that also uses 30 A Class J fuses?

Yes, the same CH30J, JM600, JP600, JT600 and JTN600 blocks accept both 5 A and 30 A Class J fuses.

How can I confirm the fuse has interrupted a fault after installation?

The DFJ-5 is non-indicating, so you must test circuit continuity with a multimeter to verify it has opened.

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