Bussmann FWP-500 High-Speed St...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,775.20
Bussmann FWP-500 Eaton series FWP high speed fuse, 250 Vac/dc, 500A, Non Indicating, High speed fuse, Stud

Bussmann FWP-500 High-Speed Stud-Mount Fuse, 250 Vac/dc, 500A

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Model: FWP-500
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$3,775.20
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Bussmann FWP-500 High-Speed Stud-Mount Fuse, 250 Vac/dc, 500A

The Bussmann FWP-500 is an Eaton Bussmann series FWP high speed fuse engineered for fast-acting overcurrent protection in demanding industrial power circuits. Rated 250 Vac/dc at 500A, this non-indicating, stud-mount fuse is built to deliver dependable current-limiting performance where rapid clearing of fault currents is critical to protecting connected equipment. Its stud-terminal design supports secure, low-resistance connections for professional electrical installations that require a proven Eaton Bussmann fuse platform.

Key Features

  • Amperage Rating: 500A for high-capacity circuit protection in industrial power systems.
  • Voltage Rating: 250 Vac/dc for use in both AC and DC circuit applications.
  • High-Speed Fuse Design: engineered for fast clearing of short-circuit currents to help protect connected equipment.
  • Non-Indicating: standard non-indicating construction for straightforward, low-profile installation.
  • Stud Mount: stud-type terminals provide a secure, low-resistance connection for demanding circuit protection applications.
  • Eaton Bussmann Series FWP: part of the recognized Eaton Bussmann series FWP high speed fuse family.

Technical Specifications

  • Amperage Rating: 500 A
  • Compliances: Contact factory
  • Packaging Type: Standard
  • Product Height: 4 in
  • Product Length Depth: 3.75 in
  • Product Weight: 2.62 lb
  • Product Width: 9.5 in

Typical Applications

  • Industrial Power Distribution Systems
  • Motor and Drive Circuit Protection
  • Panelboard and Switchgear Installations
  • Commercial and Industrial Electrical Systems
  • High-Speed Overcurrent Protection Applications

Why Bussmann?

Bussmann by Eaton is a trusted name in circuit protection, and the series FWP high speed fuse reflects that engineering standard with a robust stud-mount build rated for 250 Vac/dc at 500A. Specifying genuine Eaton Bussmann fuses helps electrical professionals maintain dependable, consistent overcurrent protection across industrial power distribution and equipment protection applications.

Manufacturer Resources

Product Specs

Amperage Rating:
500A
Compliances:
Contact factory
Fuse Indicator:
Non Indicating
Mounting Method:
Stud
Packaging Type:
Standard
Product Height:
4 in
Product Length Depth:
3.75 in
Product Weight:
2.62 lb
Product Width:
9.5 in
Voltage Rating:
250 Vac/dc
Department:
Electrical
Product Type:
Semiconductor Fuse
Product Group:
Circuit Protection
Product Subgroup:
Fuses
Product Length:
3.75 in

Bussmann FWP-500 – Frequently Asked Questions

1) Can the Bussmann FWP-500 fuse be used on a DC circuit, like a drive bus or battery system?
Yes. The FWP-500 is rated 250 Vac/dc, so the same 250 volt rating applies to both AC and DC circuits. That makes it usable on DC drive links and other DC power circuits up to 250 V, as well as 250 V AC industrial distribution. Do not apply it above 250 V on either.
2) Is the FWP-500 a bolt-in or clip-style fuse?
Stud mount. The FWP-500 uses stud-type terminals that bolt to the busbar or fuse block, so it is not a drop-in replacement for a ferrule or blade fuse held in spring clips. You need a stud-mount base or direct bus connection with matching hole spacing to install it.
3) What is a high-speed fuse like the Bussmann FWP-500 for, and when should I use a standard class fuse instead?
High-speed (semiconductor) fuses like the FWP series clear fault current very fast to protect silicon, which is what you want ahead of SCRs, diode bridges, VFD DC links, rectifiers and soft starters. For branch-circuit and feeder protection of general loads, motors on across-the-line starters, lighting and panelboards, a standard time-delay or fast-acting class fuse is the correct choice, since a high-speed fuse is not a substitute for branch-circuit-rated protection.
4) Will the FWP-500 tell me when it has blown?
No. The FWP-500 is non-indicating, so there is no mechanical pop-up pin or visual flag on the fuse body. Maintenance crews need to confirm an open element with a meter, or add external means such as a blown-fuse indicating light or a microswitch-equipped holder if you want local annunciation.
5) Can I replace a 500A FWP-500 with a smaller amp rating on the same studs?
Amp rating and physical size are linked on stud fuses, so a lower-amp FWP may have different body and stud-centre dimensions than the 500 A version. The FWP-500 is the 500 A, 250 Vac/dc member of the series; if you are changing amperage, confirm the mounting centres on the replacement match your bus or holder before you order.
6) What part number do I order for the Bussmann 500 amp high speed stud fuse?
Order by manufacturer part number FWP-500, Bussmann series FWP. It ships in standard packaging. Spelling the MPN out on the PO is the cleanest way to avoid getting a similarly named FWH or FWX series fuse, which carry different voltage ratings.
7) Is the FWP-500 fuse sold with mounting hardware or a fuse block?
The FWP-500 is the fuse only. Stud-mount fuses connect through their own terminal studs, so any bolts, washers, lugs or a stud-type fuse base needed for your panel are ordered separately alongside it.
How fast can I get the Bussmann FWP-500 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 FWP-500 come with a warranty?
Absolutely. The Bussmann FWP-500 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 FWP-500?
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 FWP-500 from ZenSupply?
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