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Eaton Bussmann

Bussmann FWH-400C FWH-C 500V DC 400A Bolted-Tag High-Speed Fuse

Part Number: FWH-400C

● LT: 4-6w

FWH-C bolted-tag high-speed fuse 400A 500V DC, 200kA AC / 50kA DC.

Rated Current400A
Rated Voltage500V DC
Breaking Capacity200kA AC / 50kA DC
PackageFWH

FWH-C bolted-tag high-speed fuse 400A 500V DC. Anti-vibration, anti-impact, high temperature resistance, 200kA AC / 50kA DC. CCC & UL certified.

Quick answer, specifications & FAQ
Direct answer

Eaton Bussmann High-Speed DC Fuse FWH-400C is rated 400A, 500V DC, Fast Acting (F), FWH. Breaking capacity 200kA AC / 50kA DC, I²t 96,700 A²s, operating temperature -40°C to +125°C, certifications UL Recognized|CCC. Listed applications: BESS, DC common bus, Power converters, Reduced-voltage starters. Standards: CCC, IEC 60269-4, UL 248. FWH-C bolted-tag high-speed fuse 400A 500V DC, 200kA AC / 50kA DC.

Last updated 23 days ago

Key specifications

  • Part number: FWH-400C
  • Brand: Eaton Bussmann
  • Rated current: 400A
  • Rated voltage: 500V DC
  • Breaking capacity: 200kA AC / 50kA DC
  • Fuse speed: Fast Acting (F)
  • Package size: FWH
  • Dimensions: FWH bolt-on
  • Terminal type: Bolted tag
  • Operating temperature: -40°C to +125°C
  • Certifications: UL Recognized|CCC
  • Standards: CCC, IEC 60269-4, UL 248

Frequently asked questions

What are the current and voltage ratings of FWH-400C?

FWH-400C is rated 400A at 500V DC.

What is the breaking capacity of FWH-400C?

FWH-400C has a breaking capacity of 200kA AC / 50kA DC. Confirm this covers the available fault current at the installation point.

What package size does FWH-400C use?

FWH-400C uses FWH package size.

Which standards and approvals apply to FWH-400C?

FWH-400C is listed under CCC, IEC 60269-4, UL 248 / UL Recognized|CCC.

What is FWH-400C used for?

FWH-400C is listed for BESS, DC common bus, Power converters, Reduced-voltage starters applications. Verify suitability for your circuit before ordering.

What are the ordering terms for FWH-400C?

FWH-400C: typical lead time 4–6 weeks, minimum order 10 pcs. Submit a quote request for a firm quotation.

Data sources

Part number
FWH-400C
Brand
Eaton Bussmann
Last updated
2026-10-10
Canonical URL
https://fusestock.com/products/bussmann-fwh-400c-fwh-c-500v-dc-400a-bolted-tag-high-speed-fuse/

Technical Specifications

Part Number
FWH-400C
Manufacturer Part Number
FWH-400C
Series
FWH-C Series
Fuse Type
High-Speed DC Fuse
Current Rating
400A
Voltage Rating
500V DC
AC / DC
AC/DC
Breaking Capacity
200kA AC / 50kA DC
I²t
96,700 A²s
Pre-arcing I²t
19200
Total I²t
96700
Operating Temperature
-40°C to +125°C
Package / Dimensions
FWH
Mounting
Bolt-Down
Application
BESS · DC common bus · Power converters · Reduced-voltage starters
Standard
CCC · IEC 60269-4 · UL 248
Terminal Type
Bolted tag
Fuse Speed
Fast Acting (F)
Utilization Class
aR
Approvals
CCC · CE · UL Recognized
Certifications
UL Recognized|CCC
Reference Lead Time
4–6 weeks
Minimum Order
10 pcs
Sample Status
LT: 4-6w
Watts Loss @ In
65W