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Cylindrical 50 A 600 V AC Class J fuse with melamine body

Bussmann

Bussmann DFJ-50 50A 600V AC Class J Fast-Acting Fuse

SKU CH-E5XK-WFNCY

A 50 A, 600 V AC fast-acting Class J fuse with 200 kA interrupt rating for high-current circuit protection

  • Fast-acting protection clears faults quickly
  • 50 A rating matches circuit design needs
  • 600 V AC rating suits industrial voltage levels
  • 200 kA interrupt capacity handles high fault currents
  • Class J compliance ensures correct fuse-block fit

Bussmann DFJ-50 Fast-Acting Fuse

The Bussmann DFJ-50 is a Class J fast-acting fuse rated at 50A and 600V AC. It provides reliable overcurrent protection for electrical circuits in industrial and commercial installations. The cylindrical melamine body fits standard non-rejection fuse blocks. This fuse suits applications requiring quick interruption of fault currents.

50A 600V AC Capacity and Interrupt Ratings

The fuse handles continuous loads up to 50 amperes at 600 volts AC and 450 volts DC. It delivers an interrupt rating of 200kA at 600V AC and 100kA at 450V DC for high fault-current scenarios. The fast-acting single element clears short circuits rapidly. It is not suited for circuits exceeding the 50A rating or for motor-starting loads needing time-delay characteristics.

Compatible Fuse Block Series and Equivalents

The DFJ-50 fits CH60J, JM600, JT600 and JTN600 fuse block series for direct installation. Cross-reference equivalents include Littelfuse LDFJ and Mersen HSJ series for straightforward replacement. The non-indicating design means visual inspection is required after a fault event. No additional accessories or indication features are bundled with this fuse.

Highlights

  • Fast-acting protection clears faults quickly
  • 50 A rating matches circuit design needs
  • 600 V AC rating suits industrial voltage levels
  • 200 kA interrupt capacity handles high fault currents
  • Class J compliance ensures correct fuse-block fit

Specifications

BrandEATON BUSSMANN

Questions about this item

Will the 50 A Class J fuse protect my existing 600 V AC panel without nuisance trips?

The DFJ-50 is a fast-acting 50 A fuse rated for 600 V AC with a 200 kA interrupt rating, so it will clear faults quickly on a 600 V AC panel.

How can I verify the fuse is good after installing it in a CH60J block?

Measure continuity across the melamine cylindrical body with a multimeter; a low resistance reading confirms the single element is intact.

Does the DFJ-50 come with a fuse block or do I need to buy a JT600 series block separately?

Only the fuse is supplied; a compatible JT600, JTN600, JM600 or CH60J block must be purchased separately.

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