Eaton Bussmann FWX-1200AH 1200A 250V AC/DC North American High-Speed Semiconductor Fuse
● Check availabilityFWX-1200AH: 1200A; 250V AC/DC; North American High-Speed; High-Speed; 200kA AC.
Rated Current1200A
Rated Voltage250V AC/DC
Breaking Capacity200kA AC
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Part NumberFWX-1200AHBrandEaton BussmannRequested Qty
Eaton Bussmann FWX-1200AH is a north american high-speed semiconductor fuse rated 1200A at 250V AC/DC. Interrupting/withstand rating: 200kA AC. Typical applications: DC common bus, DC drives, Power converters, Rectifiers, Reduced-voltage starters. Catalog states DC interrupting rating only for 35–800A; no DC IR is printed for 1000–2500A. Source: Bussmann Full Line Catalog 1007 (2018), page 4-7.
Quick answer, specifications & FAQ
Direct answer
Eaton Bussmann High-Speed Semiconductor Fuse FWX-1200AH is rated 1200A, 250V AC/DC, High Speed. Breaking capacity 200kA AC, I²t Pre-arcing 92000 A²s; clearing 750000 A²s, certifications UL Recognized|CSA to 800A|CE. Listed applications: DC Bus Protection, Motor Drives, Motor Starters, Power conversion. Standards: CSA Class 1422-30. FWX-1200AH: 1200A; 250V AC/DC; North American High-Speed; High-Speed; 200kA AC.
Key specifications
- Part number: FWX-1200AH
- Brand: Eaton Bussmann
- Rated current: 1200A
- Rated voltage: 250V AC/DC
- Breaking capacity: 200kA AC
- Fuse speed: High Speed
- Terminal type: Threaded Flush-End
- Certifications: UL Recognized|CSA to 800A|CE
- Standards: CSA Class 1422-30
- Typical lead time: 12-16 weeks
- Catalog states DC interrupting rating only for 35–800A; no DC IR is printed for 1000–2500A.; Source: Bussmann Full Line Catalog 1007 (2018), page 4-7. Catalog watts loss at rated current: 103 W.
Frequently asked questions
What are the current and voltage ratings of FWX-1200AH?
FWX-1200AH is rated 1200A at 250V AC/DC.
What is the breaking capacity of FWX-1200AH?
FWX-1200AH has a breaking capacity of 200kA AC. Confirm this covers the available fault current at the installation point.
Which standards and approvals apply to FWX-1200AH?
FWX-1200AH is listed under CSA Class 1422-30 / UL Recognized|CSA to 800A|CE.
What is FWX-1200AH used for?
FWX-1200AH is listed for DC Bus Protection, Motor Drives, Motor Starters, Power conversion applications. Verify suitability for your circuit before ordering.
What are the ordering terms for FWX-1200AH?
FWX-1200AH: typical lead time 12-16 weeks. Submit a quote request for a firm quotation.
Data sources
- Part number
- FWX-1200AH
- Brand
- Eaton Bussmann
- Last updated
- 2026-09-18
- Canonical URL
- https://fusestock.com/products/eaton-bussmann-fwx-1200ah/
Technical Specifications
- Part Number
- FWX-1200AH
- Manufacturer Part Number
- FWX-1200AH
- Series
- FWX Series (250V North American High-Speed)
- Fuse Type
- High-Speed Semiconductor Fuse
- Current Rating
- 1200A
- Voltage Rating
- 250V AC/DC
- AC / DC
- AC/DC
- Breaking Capacity
- 200kA AC
- I²t
- Pre-arcing 92000 A²s; clearing 750000 A²s
- Pre-arcing I²t
- 92000
- Total I²t
- 750000
- Mounting
- Flush-End Contact
- Application
- DC Bus Protection · Motor Drives · Motor Starters · Power conversion · Rectifiers
- Standard
- CSA Class 1422-30
- Terminal Type
- Threaded Flush-End
- Fuse Speed
- High Speed
- Approvals
- CE · CSA by rating · UL Recognized
- Certifications
- UL Recognized|CSA to 800A|CE
- Reference Lead Time
- 12-16 weeks
- Catalog states DC interrupting rating only for 35–800A; no DC IR is printed for 1000–2500A.; Source
- Bussmann Full Line Catalog 1007 (2018), page 4-7. Catalog watts loss at rated current: 103 W.
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