Bussmann FWH-5A14F Eaton Serie...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$107.86
Bussmann FWH-5A14F Eaton Series High-Speed Cylindrical Fuse, 500V Semiconductor Protection

Bussmann FWH-5A14F Eaton Series High-Speed Cylindrical Fuse, 500V Semiconductor Protection

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Model: FWH-5A14F

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

$107.86
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Bussmann Eaton Series High-Speed Cylindrical Fuse, 500V Semiconductor Protection

Bussmann, part of the Eaton Bussmann series of circuit protection products, offers this high-speed cylindrical fuse engineered for demanding semiconductor protection applications. Rated at 500V, this fuse is built to respond rapidly to fault currents, helping safeguard sensitive semiconductor devices such as SCRs, diodes, and thyristors from damaging overcurrent conditions. The cylindrical body style is designed for compatibility with standard high-speed fuse holders and mounting hardware commonly used throughout industrial power electronics equipment. As part of the trusted Eaton Bussmann series lineup, this fuse is engineered to deliver dependable overcurrent protection for professional and industrial electrical applications.

Key Features

  • Fuse Type: High-speed cylindrical fuse construction designed for rapid response to fault and overcurrent conditions.
  • Voltage Rating: Rated at 500V, suitable for semiconductor protection circuits operating at this voltage level.
  • Semiconductor Protection: Engineered specifically to protect semiconductor devices such as SCRs, diodes, and thyristors from damaging fault currents.
  • High-Speed Operation: Fast-acting design helps minimize let-through energy, reducing stress on downstream components during fault events.
  • Eaton Bussmann Series: Manufactured as part of the Eaton Bussmann series product line, reflecting established circuit protection engineering standards.
  • Cylindrical Form Factor: Standard cylindrical body configuration for compatibility with common high-speed fuse mounting hardware and holders.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Semiconductor Device Protection (SCRs, Diodes, Thyristors)
  • Variable Frequency Drives and Motor Control Systems
  • Rectifier and Power Conversion Circuits
  • Industrial Power Electronics Equipment
  • OEM Equipment Requiring High-Speed Overcurrent Protection
  • Industrial and Commercial Electrical Systems

Why Bussmann?

Bussmann, as part of the Eaton Bussmann series, is a recognized name in circuit protection for demanding industrial and commercial electrical systems. This high-speed cylindrical fuse reflects the engineering focus on fast-acting, reliable overcurrent protection that professionals depend on when protecting sensitive semiconductor equipment. Choosing Bussmann means choosing a product line built around consistent performance for critical power electronics applications.

Manufacturer Resources

Spec Sheet

Product Specs

list_batch:
BUSS-20260919
Product Type:
Semiconductor Fuse
Voltage Rating:
500V
Series:
FWH
Configuration:
High-Speed
Department:
Electrical
Product Subgroup:
Fuses
Product Group:
Circuit Protection
Product Height:
14 mm
Product Width:
14 mm
Product Weight:
22.4 g
Product Length:
55 mm
Amperage Rating:
5A

Bussmann FWH-5A14F – Frequently Asked Questions

1) What is the Bussmann FWH-5A14F fuse used for?
The FWH-5A14F is a high-speed cylindrical fuse built to protect semiconductor devices, SCRs, diodes and thyristors, from fault currents. It shows up in variable frequency drives, motor control, rectifier and power conversion circuits, and OEM power electronics. If you are protecting a motor branch circuit or general feeder rather than solid-state devices, this is the wrong class of fuse; you want a standard time-delay or fast-acting branch circuit fuse instead.
2) Can I use the FWH-5A14F on a 600V drive?
No. The FWH-5A14F carries a 500V rating, so it should only be applied in circuits operating at or below that level. For a 600V semiconductor circuit you need a fuse rated for that voltage, not this one. Never apply a semiconductor fuse above its voltage rating, the interrupting performance is only valid at or below the marked value.
3) Will the FWH-5A14F fit my existing high-speed fuse holder?
The FWH-5A14F uses a standard cylindrical body form, which is what common high-speed fuse holders and mounting hardware in industrial power electronics are built to accept. Match the body diameter and length of the fuse you are replacing before ordering, cylindrical semiconductor fuses come in several barrel sizes and the holder clips are size specific.
4) Is a high-speed fuse like the FWH actually necessary, or will a fast-acting fuse do?
For solid-state devices, the distinction matters. The FWH series is a high-speed design that clears quickly enough to limit let-through energy (I2t) during a fault, which is what keeps an SCR or diode from being destroyed before the fuse opens. An ordinary fast-acting branch circuit fuse does not coordinate to a semiconductor's I2t withstand and generally will not save the device. Use the FWH where the drawing calls for semiconductor protection.
5) What exact part number do I order for the Bussmann 500V FWH fuse?
Order by manufacturer part number FWH-5A14F. It is part of the Eaton Bussmann FWH series of high-speed cylindrical fuses. Keep the full suffix when ordering, the trailing characters identify the body style and terminal configuration within the series, and a different suffix is a different physical part.
6) Where do I find the full electrical specs for the FWH-5A14F?
Eaton publishes a spec sheet for this FWH high-speed fuse covering the detailed electrical data, and it is linked from the product record as a PDF. Use that document when you need to coordinate the fuse to a specific semiconductor's withstand rating.
How fast can I get the Bussmann FWH-5A14F 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 FWH-5A14F come with a warranty?
Absolutely. The Bussmann FWH-5A14F 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 FWH-5A14F?
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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