Bussmann FWP-40A14F High-Speed...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$190.33
Bussmann FWP-40A14F High-Speed Cylindrical Semiconductor Fuse, 700V

Bussmann FWP-40A14F High-Speed Cylindrical Semiconductor Fuse, 700V

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Model: FWP-40A14F

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

$190.33
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Bussmann FWP-40A14F High-Speed Cylindrical Semiconductor Fuse, 700V

The Bussmann FWP-40A14F is a high-speed cylindrical fuse from the Eaton Bussmann series, engineered specifically for semiconductor circuit protection in demanding power electronics equipment. Rated 700V, this fast-acting fuse is designed to open quickly under short-circuit and overcurrent conditions, helping limit the fault energy that reaches sensitive downstream semiconductor devices. Its cylindrical, ferrule-style construction is built for compatibility with standard high-speed fuse holders and mounting blocks commonly used in industrial control panels, drives, and power conversion assemblies. As part of the Bussmann FWP series, the FWP-40A14F is intended for applications where dependable, fast-clearing overcurrent protection of solid-state components is essential. This fuse is commonly selected by engineers and panel builders seeking a dependable Eaton Bussmann solution for protecting costly semiconductor equipment from catastrophic failure.

Key Features

  • Voltage Rating: Rated 700V, supporting use in higher-voltage semiconductor protection circuits found in industrial power electronics.
  • High-Speed Operation: High-speed fuse design engineered to clear fault currents quickly, helping reduce the let-through energy that reaches protected semiconductor components.
  • Cylindrical Construction: Cylindrical, ferrule-style body compatible with standard high-speed fuse holders and mounting hardware for straightforward installation.
  • Semiconductor Circuit Protection: Purpose-built to protect solid-state devices such as SCRs, diodes, rectifiers, and other power semiconductors from damaging fault currents.
  • FWP Series Design: Model FWP-40A14F is part of the Bussmann FWP high-speed semiconductor fuse series, used across power conversion and drive applications.
  • Reliable Interruption: Designed to provide consistent, repeatable interruption performance under fault conditions typical of high-speed semiconductor fuse applications.
  • Eaton Bussmann Series: Manufactured under the Eaton Bussmann series, reflecting a long-standing focus on circuit protection for industrial and commercial power systems.

Technical Specifications

  • Voltage Rating: 700V
  • Fuse Type: High-Speed Cylindrical Semiconductor Fuse
  • Model: FWP-40A14F
  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Power Conversion and Power Electronics Equipment
  • Variable Frequency Drives (VFDs)
  • SCR and Rectifier Circuits
  • Industrial Motor Drive Systems
  • Semiconductor Component Protection
  • Industrial and Commercial Power Distribution Equipment

Why Bussmann?

Bussmann, manufactured under the Eaton Bussmann series, is a recognized name in circuit protection for demanding industrial power electronics applications. The FWP-40A14F's high-speed, 700V-rated design reflects an engineering focus on protecting sensitive semiconductor devices from fault conditions before damage can occur. Specifying Bussmann fuses helps electrical professionals deliver dependable, consistent overcurrent protection for power conversion and drive systems built on Eaton Bussmann's established circuit protection expertise. For engineers designing or maintaining power electronics equipment, the FWP-40A14F offers a trusted Eaton Bussmann option for protecting critical semiconductor components.

Manufacturer Resources

Product Specs

list_batch:
BUSS-20260919
Product Type:
Semiconductor Fuse
Voltage Rating:
700V
Series:
FWP
Department:
Electrical
Product Subgroup:
Fuses
Product Group:
Circuit Protection
Product Weight:
21.2 g
Product Width:
14 mm
Product Length:
51 mm
Product Color:
White
Product Height:
14 mm
Product Diameter:
14 mm
Product Material:
Ceramic
Amperage Rating:
40A

Bussmann FWP-40A14F – Frequently Asked Questions

1) What is the Bussmann FWP-40A14F fuse used for?
The FWP-40A14F is a high-speed cylindrical semiconductor fuse rated 700V, used to protect solid-state power devices such as SCRs, diodes and rectifiers. It clears fault current quickly to limit the let-through energy that reaches those devices. Typical spots for it are variable frequency drives, SCR and rectifier circuits, industrial motor drive systems, and power conversion assemblies.
2) Can I use a high-speed semiconductor fuse like the FWP-40A14F in place of a standard branch-circuit fuse?
No. The FWP series is purpose-built for semiconductor protection, meaning it opens far faster than a general-purpose fuse to keep fault energy off solid-state devices. That speed makes it unsuitable as a substitute for a time-delay or general-purpose branch-circuit fuse feeding motors or transformers, where inrush would nuisance-open it. Use it where the drawing calls for a semiconductor or high-speed fuse.
3) Will the Bussmann FWP-40A14F fit a standard fuse holder or block?
It is a cylindrical, ferrule-style body built for compatibility with standard high-speed fuse holders and mounting blocks of the type used in industrial control panels, drives and power conversion assemblies. It is not a bolt-on or blade-tag fuse, so the holder has to be a ferrule clip style sized for this body.
4) Is a 700V fuse acceptable on a 480V or 600V drive circuit?
The FWP-40A14F carries a 700V rating, which is the maximum circuit voltage it is rated to interrupt. Applying it on a lower-voltage system, such as a 480V or 600V drive, is normal practice; what you cannot do is apply it above 700V. Match the amp rating and the let-through energy to the semiconductor you are protecting, not just the voltage.
5) What part number do I order for this Bussmann high-speed fuse?
Order by manufacturer part number FWP-40A14F, part of the Bussmann FWP high-speed semiconductor fuse series from Eaton. There is one model on it, so no additional option needs to be specified beyond quantity.
6) I maintain VFDs and need a spare fuse kit. Is the FWP-40A14F the right type to stock?
For drives and power conversion gear it is the right family. The FWP series is the high-speed semiconductor fuse used in VFDs, SCR and rectifier circuits and industrial motor drive systems, so holding spares avoids a long downtime hunt when a rectifier section faults. Stock to the amp rating and voltage printed on the fuse your drive came with; this one is the 700V FWP-40A14F.
How fast can I get the Bussmann FWP-40A14F 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-40A14F come with a warranty?
Absolutely. The Bussmann FWP-40A14F 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-40A14F?
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
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