Bussmann Eaton FWJ Series High...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$5,273.43
Bussmann Eaton FWJ Series High-Speed Fuse, 1000V AC/DC

Bussmann Eaton FWJ Series High-Speed Fuse, 1000V AC/DC

(No reviews yet) Write a Review

Model: FWJ-1000A

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

$5,273.43
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Bussmann Eaton FWJ Series High-Speed Fuse, 1000V AC/DC

The Bussmann Eaton FWJ Series High-Speed Fuse is engineered for semiconductor and power electronics circuit protection, combining a 700 Vac (UL) / 690 Vac (IEC) voltage rating with up to 800 Vdc protection depending on amperage. This high-speed fuse series spans amperage ratings from 90A to 2000A, with interrupting capacities of 25 kAIC (35-200A) and 100 kAIC (250-2000A) on AC circuits, plus 50 kAIC at 800 Vdc for select ratings (35-200A, 450-600A). Rated 1000V and suitable for AC/DC voltage type applications, the FWJ series carries CE Marked compliance for use in demanding industrial power systems.

Key Features

  • Amperage Range: Available across amp ratings from 90A to 2000A to match a wide range of circuit protection needs.
  • Voltage Rating: Rated 700 Vac (UL), 690 Vac (IEC), and up to 800 Vdc (5-50A) for AC/DC voltage type applications.
  • High AC Interrupting Capacity: 25 kAIC (35-200A) and 100 kAIC (250-2000A) for reliable fault clearing on AC circuits.
  • DC Interrupting Rating: 50 kAIC at 800 Vdc for the 35-200A and 450-600A ratings, suited to DC power protection.
  • High-Speed Fuse Design: Fast-acting construction built to protect semiconductors and power electronics from fault currents.
  • Terminal Configuration: Offered with blade-end and stud terminal options for flexible mounting into existing fuse holders.

Certifications & Compliance

  • CE Marked

Technical Specifications

  • Insulated Metal Gripping Lugs (IMGL): No
  • Compliances: CE Marked
  • Voltage Rating: 1000V
  • Voltage Type: AC/DC
  • Packaging Type: Standard
  • Utilization Category: Other

Typical Applications

  • Semiconductor and Power Electronics Protection
  • Industrial Motor Drives and Rectifier Circuits
  • DC Power Distribution Systems
  • Commercial and Industrial Electrical Installations

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the FWJ Series high-speed fuse line delivers the interrupting capacity and voltage ratings demanded by semiconductor and power electronics applications. With CE Marked compliance and a broad amperage range from 90A to 2000A, the FWJ series gives engineers a reliable, code-compliant option for protecting sensitive power circuits.

Manufacturer Resources

Product Specs

Insulated Metal Gripping Lugs Imgl:
No
Department:
Electrical
Product Type:
High-Speed Fuse
Product Group:
Fuses
Compliances:
CE Marked
Voltage Rating:
1000V
Voltage Type:
AC/DC
Mounting Method:
Stud
Product Details:
High speed fuse
Packaging Type:
Standard
Utilization Category:
Other
Connection:
Blade end x blade end
Product Subgroup:
Other Fuses
Series:
FWJ
Amperage Rating:
90A - 2000A
Standards:
CE Marked

Bussmann FWJ-1000A – Frequently Asked Questions

1) What amp ratings can I get in the Bussmann FWJ high-speed fuse?
The FWJ Series spans 90A through 2000A. Orderable ratings are 90, 125, 175, 200, 250, 300, 350, 1000, 1200, 1400, 1600, 1800 and 2000 amps, each carrying an MPN in the form FWJ-250A, FWJ-1600A and so on. Pick the amp rating off the drive or rectifier nameplate and order the matching suffix.
2) Will a FWJ fuse protect a semiconductor drive, or do I need a standard industrial fuse?
A standard time-delay or dual-element fuse will not clear fast enough to save a diode or IGBT. The FWJ is a high-speed (fast-acting) fuse built specifically for semiconductor and power electronics protection, which is what you want ahead of rectifier stacks, motor drives and DC power distribution. Use conventional branch-circuit fuses for motor and feeder protection, not for the silicon.
3) Can I use the Bussmann FWJ fuse on a DC bus?
Yes, it's an AC/DC fuse. The FWJ carries DC protection up to 800 Vdc depending on the amp rating, with a 50 kAIC interrupting rating at 800 Vdc on the 35-200A and 450-600A ratings. On AC it is 700 Vac (UL) / 690 Vac (IEC). Match your bus voltage to the rating that applies to the amperage you are ordering.
4) What is the interrupting capacity on the FWJ series?
On AC it's 25 kAIC for the 35-200A ratings and 100 kAIC for 250-2000A. So if your available fault current at the panel is above 25 kA, the smaller FWJ ratings are not the right choice for that location. On DC it is 50 kAIC at 800 Vdc for the 35-200A and 450-600A ratings.
5) How does the FWJ fuse mount, and will it drop into my existing holder?
The FWJ is a blade-end by blade-end fuse with stud mounting, so it bolts through the blade tags rather than snapping into clips. Blade-end and stud terminal options are offered for fitting existing fuse holders. Confirm your holder is a bolt-in stud type with matching centers before ordering, since a clip-style holder won't take it.
6) Do Bussmann FWJ fuses come with insulated metal gripping lugs?
No. The FWJ is supplied without IMGL. If your application calls for insulated gripping lugs for safe handling or touch protection at the terminals, this fuse won't provide them and you'll need to plan terminal shrouding separately.
7) Is the FWJ fuse acceptable for a CE-marked machine build going to Europe?
The FWJ Series is CE Marked, which is the compliance mark listed for the series. That covers it for inclusion in equipment being declared to European directives. The IEC voltage rating on the series is 690 Vac.
8) The catalog says 1000V but the description says 700 Vac - which do I size to?
The 1000V figure is the series voltage class for the FWJ line, covering AC/DC use. For applying the fuse, work to the usable circuit ratings: 700 Vac under UL, 690 Vac under IEC, and up to 800 Vdc on DC depending on amp rating. Size your circuit against those numbers, not the class rating.
9) How do FWJ fuses ship - single fuses or multipacks?
Standard packaging. The FWJ is ordered by individual amp rating, each with its own part number such as FWJ-90A or FWJ-2000A, so you buy the exact ratings you need rather than a fixed assortment.
How fast can I get the Bussmann FWJ-1000A 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 FWJ-1000A come with a warranty?
Absolutely. The Bussmann FWJ-1000A 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 FWJ-1000A?
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 FWJ-1000A from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!