Bussmann FWX Series High-Speed...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$10,811.51
Bussmann FWX Series High-Speed Fuse, Non-Indicating, 600V

Bussmann FWX Series High-Speed Fuse, Non-Indicating, 600V

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Model: FWX-1000AH

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

$10,811.51
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Bussmann FWX Series High-Speed Fuse, 600V

The Bussmann FWX series from Eaton is a high speed fuse line engineered for demanding power electronics, semiconductor, and motor drive protection applications. This family is rated 600V, features a Non-Indicating body style, and uses a Blade End x Stud terminal configuration for secure mounting in standard fuse blocks and holders. The FWX series is available in amp ratings spanning from 1A up to 2500A, giving electrical engineers and panel builders a wide selection of current ratings to match specific circuit protection requirements. Built for fast clearing performance, these high speed fuses carry interrupting ratings up to 200 kAIC RMS at Vac and 50 kAIC at 250 Vdc, delivering dependable short-circuit protection across a broad range of industrial and commercial power systems.

Key Features

  • Amp Rating Range: The FWX series is offered from 1A up to 2500A, covering a wide span of amp ratings to fit diverse circuit protection needs.
  • Voltage Rating: Rated 600V for use in higher-voltage power distribution, control, and power electronics circuits.
  • High Speed Fuse Construction: Purpose-built high speed fuse design engineered for fast clearing in power electronics and semiconductor protection duty.
  • Non-Indicating Design: Non-Indicating body style suited for standard fuse holders and fuse blocks without a blown-fuse indicator.
  • Terminal Configuration: Blade End x Stud terminals provide a secure, code-compliant connection method for mounting in compatible fuse blocks.
  • Interrupting Rating: Up to 200 kAIC RMS interrupting capacity at Vac and 50 kAIC at 250 Vdc for reliable short-circuit interruption.

Certifications & Compliance

  • CE Marked

Technical Specifications

  • Packaging Type: Standard
  • Compliances: CE Marked

Typical Applications

  • Power Electronics and Semiconductor Protection
  • Motor Branch Circuit and Variable Frequency Drive Protection
  • Industrial Control Panels and Power Distribution Equipment
  • OEM Machine Builder and Panel Shop Applications
  • Commercial and Industrial Electrical Systems Requiring 600V Protection

Why Bussmann?

Bussmann by Eaton is a long-established name in circuit protection, and the FWX series high speed fuse family reflects that engineering discipline with a 600V rating, Non-Indicating design, and Blade End x Stud terminals carried consistently across the full 1A to 2500A range. Backed by a CE Marked compliance designation and interrupting ratings up to 200 kAIC RMS at Vac and 50 kAIC at 250 Vdc, the FWX series gives electrical professionals a dependable option for fast, code-compliant protection in demanding industrial and power electronics applications.

Manufacturer Resources

Product Specs

Packaging Type:
Standard
Compliances:
CE Marked
Department:
Electrical
Product Type:
Fuse
Series:
FWX
Voltage Rating:
600V
Connection Type:
Blade End x Stud
Standards:
CE Marked
Product Group:
Fuses
Product Subgroup:
Other Fuses

Bussmann FWX-1000AH – Frequently Asked Questions

1) Can I use a Bussmann FWX fuse to protect a VFD or semiconductor drive on a 600V circuit?
That is what the FWX series is built for. It is a high speed fuse line rated 600V, made for power electronics, semiconductor, and motor drive protection, including motor branch circuits and variable frequency drives. Fast clearing is the point: standard branch circuit fuses do not open quickly enough to save diodes, SCRs, or IGBTs. Interrupting capacity runs up to 200 kAIC RMS at Vac and 50 kAIC at 250 Vdc.
2) Will a Bussmann FWX fuse mount in my existing fuse block?
The FWX uses a Blade End x Stud terminal configuration, so the holder or block has to be prepped for that arrangement rather than for a ferrule or clip-style cartridge fuse. If your block takes clip-mounted ferrule fuses, the FWX will not drop in. Check the block against blade and stud mounting before ordering.
3) Is the Bussmann FWX fuse suitable for DC circuits like a drive DC bus?
It carries a DC interrupting rating of 50 kAIC at 250 Vdc alongside up to 200 kAIC RMS at Vac. So for DC use the applicable rating is 250 Vdc, not the 600V AC figure. Size your DC bus protection against that 250 Vdc number.
4) Can I swap a standard Class J or RK5 branch fuse for an FWX in the same amp rating?
Not as a like-for-like substitution. The FWX is a high speed semiconductor fuse with Blade End x Stud terminals, so it does not mount in clip-style Class J or RK blocks, and its clearing characteristic is much faster than a branch circuit fuse. Use it where the drawing calls for semiconductor protection, and keep the specified branch circuit fuse class where the design calls for one.
5) What amp ratings does the Bussmann FWX high speed fuse come in?
The FWX family spans 1A all the way to 2500A at 600V, so one series covers everything from a small control or rectifier circuit up to large drive and power conversion gear. Ratings include 1A, 2A, 3A, 4A, 45A, 50A, 90A, 1000A, 1600A and 2500A among others, ordered by part number such as FWX-50A14F or FWX-1600AH.
6) Does the Bussmann FWX fuse have a blown-fuse indicator?
No. The FWX is a Non-Indicating body style, so there is no visual pop-out or pin to show it has opened, and no provision for a microswitch indicator kit. If your panel design relies on visual or remote blown-fuse detection, you need an indicating high speed fuse instead, or a separate monitoring method.
7) Are Bussmann FWX fuses CE marked for equipment being exported?
Yes, the FWX series carries a CE Marked compliance designation, which matters for OEM machine builders and panel shops shipping equipment into markets that require it.
8) How do I order the right Bussmann FWX fuse for my panel?
Pick by amp rating: the voltage (600V), Non-Indicating body, and Blade End x Stud terminals stay the same across the whole line, so amperage is the only variable to select. Order by the full part number, for example FWX-90A or FWX-1000AH. Packaging is standard.
How fast can I get the Bussmann FWX-1000AH 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 FWX-1000AH come with a warranty?
Absolutely. The Bussmann FWX-1000AH 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 FWX-1000AH?
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 FWX-1000AH from ZenSupply?
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