Bussmann Eaton DFJ Series Clas...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$445.55
Bussmann Eaton DFJ Series Class J High-Speed Fuse, Clip-Lock, Non-Indicating

Bussmann Eaton DFJ Series Class J High-Speed Fuse, Clip-Lock, Non-Indicating

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Model: DFJ-70

In Stock (leaves warehouse same day if ordered before 3pm ET)

$445.55
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Bussmann Eaton DFJ Series Class J High-Speed Fuse, Clip-Lock, Non-Indicating

The Bussmann Eaton DFJ series is a Class J high-speed fuse line rated 600 Vac or less and 450 Vdc or less, engineered for fast-acting short-circuit protection in demanding AC and DC power systems. This family is available in 70A and 90A ratings, with Non-Indicating, Clip-lock construction delivering a 200 kAIC interrupting rating at 600 Vac and 100 kAIC at 450 Vdc. Each fuse features a rugged Melamine tube body built to withstand high fault currents while maintaining reliable, code-compliant circuit protection for critical AC and DC applications.

Key Features

  • Amp Rating Range: Available in 70A and 90A ratings to match a range of circuit protection requirements.
  • Dual Voltage Rating: Rated 600 Vac or less and 450 Vdc or less, suitable for protection of both AC and DC circuits.
  • High Interrupting Capacity: 200 kAIC at 600 Vac and 100 kAIC at 450 Vdc for dependable short-circuit interruption.
  • Durable Construction: Melamine tube body provides a rugged, high-temperature-resistant fuse casing.
  • Clip-Lock Design: Clip-lock construction ensures secure engagement in the fuse clip for stable connections.
  • Non-Indicating: Non-Indicating design for standard Class J fuse applications without a blown-fuse indicator.
  • Class J High-Speed Fuse: DFJ series high-speed fuse construction for fast clearing of fault currents.

Certifications & Compliance

  • CSA Certified
  • CE Marked

Technical Specifications

  • Compliances: CE Marked
  • Certifications: CSA Certified
  • Packaging Type: Standard

Typical Applications

  • Motor Control Circuit Protection
  • Industrial Electrical Panels and Switchgear
  • Short-Circuit Protection for AC and DC Power Circuits
  • Panelboard and Load Center Fuse Protection
  • DC Power and Renewable Energy System Protection
  • Commercial and Industrial Electrical Installations

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the DFJ series Class J high-speed fuse reflects that reliability with a durable Melamine tube body, Clip-lock construction, and high 200 kAIC / 100 kAIC interrupting ratings. Backed by CSA Certification and CE Marking, these fuses are built for code-compliant, reliable performance in demanding commercial and industrial electrical systems.

Manufacturer Resources

Product Specs

Class:
Class J
Product Length Depth:
4.83 in
Connection:
Clip-lock
Product Height:
1.19 in
Product Material:
Melamine
Packaging Type:
Standard
Voltage Rating:
600VAC/450VDC
Department:
Electrical
Fuse Indicator:
Non Indicating
Compliances:
CE Marked
Certifications:
CSA Certified
Product Weight:
.31 lb
Product Width:
1.18 in
Product Type:
High-Speed Fuse
Connection Type:
Clip-Lock
Amperage Rating:
70A-90A
Listing:
CSA Certified
Standards:
CE Marked
Product Group:
Fuses
Product Subgroup:
Other Fuses

Bussmann DFJ-70 – Frequently Asked Questions

1) Can a Bussmann DFJ Class J fuse be used on a DC circuit, like a solar or battery system?
Yes. The DFJ series carries a dual rating of 600VAC/450VDC, so it protects DC circuits up to 450 volts as well as AC up to 600 volts. Interrupting rating is 200 kAIC at 600 Vac and 100 kAIC at 450 Vdc. That DC rating is why it shows up in drive, battery and renewable energy work where a standard AC-only Class J fuse would not be acceptable.
2) Will a DFJ fuse drop into my existing Class J fuse block?
It will. DFJ is a Class J fuse, and Class J is a dimensionally standardized class, so the 70A and 90A DFJ share the same body and blade dimensions as any other 70A or 90A Class J fuse and mount in the same block or holder. The body measures 4.83 x 1.19 x 1.18 inches. The clip-lock feature grips the fuse clip so it stays seated under vibration.
3) Is a high-speed Class J fuse like the DFJ the right choice for protecting a VFD, or should I use a standard time-delay Class J?
High-speed is the one to use ahead of semiconductor devices. The DFJ is built for fast clearing of fault current, which is what protects diodes, SCRs and IGBTs in drives and rectifiers from letting through more energy than they can survive. For a plain motor starter or transformer where inrush needs to be ridden through, a time-delay Class J is the better fit, since a high-speed element can nuisance-open on normal startup surge.
4) What amp ratings does the Bussmann DFJ high-speed fuse come in?
Two: 70 amp (DFJ-70) and 90 amp (DFJ-90). Both share the same 600VAC/450VDC rating and the same Class J body, so stepping between them is purely an ampacity decision for your circuit.
5) Does the DFJ fuse have a blown-fuse indicator?
No. The DFJ described here is non-indicating, so there is no pop-out pin or visual flag to tell you which fuse opened. On a three-phase panel you will be metering or ohming the fuses out to find the failed leg, so plan for that if your maintenance crew relies on a visual check.
6) Is the Bussmann DFJ fuse approved for use in Canada and for CE-marked equipment?
It is CSA Certified and CE Marked, which covers Canadian installations and machinery built to European conformity requirements. Those are the two approvals carried on the DFJ series.
7) What is the DFJ fuse body made of, and will it hold up in a hot enclosure?
The tube is melamine, a thermoset used for its high-temperature resistance and strength under the mechanical stress of a high fault current interruption. That is the standard construction for Class J high-speed fuses running inside drive cabinets and switchgear.
How fast can I get the Bussmann DFJ-70 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bussmann DFJ-70 come with a warranty?
Absolutely. The Bussmann DFJ-70 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bussmann DFJ-70?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Bussmann DFJ-70 from ZenSupply?
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