Bussmann FWC Series High-Speed...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$66.21
Bussmann FWC Series High-Speed Cylindrical Fuse, 500V Ferrule End

Bussmann FWC Series High-Speed Cylindrical Fuse, 500V Ferrule End

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Model: FWC-12A10F

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

$66.21
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Bussmann FWC Series High-Speed Cylindrical Fuse, 500V Ferrule End

The Bussmann FWC Series is a line of Eaton Bussmann high-speed cylindrical fuses purpose-built for fast, reliable interruption in demanding power electronics and semiconductor protection circuits. Available in amperage ratings from 12A through 25A (models FWC-12A10F, FWC-20A10F, and FWC-25A10F), the series is rated 500V with an interrupting capacity of 200 kAIC Vac and 50 kAIC at 700 Vdc, making it well suited for protecting sensitive semiconductor devices such as SCRs, diodes, and thyristors from short-circuit and overcurrent events. Every fuse in the series shares a non-indicating design with ferrule end x ferrule end termination for straightforward installation into compatible cylindrical fuse holders, blocks, and disconnect assemblies used throughout industrial power conversion equipment.

Key Features

  • Amperage Range: Available from 12A to 25A across the FWC-12A10F, FWC-20A10F, and FWC-25A10F models for precise, application-matched overcurrent protection.
  • Voltage Rating: 500V rating shared across the series for use in medium-voltage power electronics and semiconductor protection circuits.
  • Interrupting Rating: 200 kAIC Vac and 50 kAIC at 700 Vdc interrupting capacity for dependable fault clearing in high-energy circuits.
  • High-Speed Operation: Fast-acting cylindrical fuse design engineered for rapid response to protect sensitive semiconductor components such as SCRs, diodes, and thyristors.
  • Termination: Ferrule end x ferrule end configuration for compatibility with standard cylindrical fuse holders and blocks.
  • Cylindrical Fuse Body: Compact cylindrical form factor designed for space-saving installation in fuse holders and power electronics enclosures.
  • Non-Indicating Design: Standard non-indicating construction for straightforward, cost-effective circuit protection.
  • FWC Series: Part of the Eaton Bussmann FWC series of high-speed semiconductor protection fuses.

Technical Specifications

  • Series: FWC
  • Product Details: High Speed Fuse
  • Product Weight: 8.8 grams (per fuse)

Typical Applications

  • Power Semiconductor Protection (SCRs, Diodes, Thyristors)
  • Variable Frequency Drives and Motor Drive Circuits
  • Rectifier and Power Conversion Equipment
  • Industrial Power Electronics Systems
  • High-Speed Overcurrent Protection Applications

Why Bussmann?

Bussmann is a trusted name in circuit protection, and the FWC series high-speed cylindrical fuse line reflects Eaton Bussmann engineering standards for demanding semiconductor and power electronics applications. With a shared 500V rating and an interrupting capacity of 200 kAIC Vac and 50 kAIC at 700 Vdc across the 12A-25A range, these fuses are built to deliver dependable, high-speed protection for critical circuits where standard fuses cannot respond quickly enough. The non-indicating, ferrule end x ferrule end construction keeps installation simple while maintaining the precise, code-compliant performance professionals expect from the Eaton Bussmann brand in industrial and commercial power electronics environments.

Manufacturer Resources

Product Specs

Product Type:
Semiconductor Fuse
Series:
FWC
Voltage Rating:
500V
Amperage Rating:
20A
Configuration:
Ferrule End x Ferrule End
Department:
Electrical
Product Subgroup:
Fuses
list_batch:
BUSS-20260919
Connection Type:
Ferrule End
Product Weight:
8.8 grams
Product Details:
High Speed Fuse
End Type:
Ferrule
Product Group:
Circuit Protection
Certifications:
CSA Certified
Product Length:
38 mm
Compliances:
CE Marked

Bussmann FWC-12A10F – Frequently Asked Questions

1) Which amp ratings does the Bussmann FWC series cylindrical fuse come in?
Three ratings: 12A (FWC-12A10F), 20A (FWC-20A10F) and 25A (FWC-25A10F). All three share the same 500V rating and the same ferrule end x ferrule end body, so you size strictly by the amperage your semiconductor stack calls for and the holder stays the same.
2) Can I use an FWC high-speed fuse in place of a standard branch-circuit fuse on a drive?
No, and the swap works only one way. The FWC is a high-speed semiconductor fuse built to clear faster than a standard fuse so SCRs, diodes and thyristors survive a short. A standard fuse will not protect those devices. Conversely, an FWC is not a general-purpose branch fuse, it belongs in the semiconductor protection position in drives, rectifiers and power conversion gear.
3) Will the FWC fuse mount in my existing cylindrical fuse holder or fuse block?
It terminates ferrule end on both ends, so it drops into standard cylindrical fuse clips, holders, blocks and disconnect assemblies that accept that body style. There are no bolt-on tags or blade lugs on these, so if your gear is set up for bolted fuses the FWC will not land in it.
4) What is the interrupting rating on the Bussmann FWC 500V fuse?
200 kAIC on AC and 50 kAIC at 700 Vdc. That covers high-energy industrial feeds where available fault current at the drive input is well above what a low-interrupting fuse can safely clear. The AC voltage rating of the fuse itself is 500V.
5) Do these Bussmann FWC fuses have a blown-fuse indicator?
No. The FWC cylindrical fuses are non-indicating, so there is no pop-up pin or striker to trip a microswitch and no visual flag. If your panel relies on a mechanical indicator or an indicator-driven alarm contact, this is the wrong part for that position.
6) Can I run a 500V FWC fuse on a DC bus?
Yes, within its DC limits. The series is rated 500V AC with 200 kAIC, and on DC it carries a 50 kAIC interrupting rating at 700 Vdc, which is the figure that matters for a rectified bus or DC link in power conversion equipment.
7) What equipment are Bussmann FWC fuses typically installed in?
Variable frequency drives and motor drive circuits, rectifier and power conversion equipment, and industrial power electronics generally, anywhere SCRs, diodes or thyristors need protecting from short circuit and overcurrent events faster than a conventional fuse reacts.
8) How much does one Bussmann FWC cylindrical fuse weigh?
8.8 grams each. That is per fuse, which matters if you are spec'ing a spares kit for a multi-site MRO crib or figuring freight on a bulk order of replacements.
How fast can I get the Bussmann FWC-12A10F 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 FWC-12A10F come with a warranty?
Absolutely. The Bussmann FWC-12A10F 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 FWC-12A10F?
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 FWC-12A10F from ZenSupply?
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