Eaton Bussmann FWJ-20A14F 20A 1000V AC / 800V DC Class aR 14x67mm High-Speed Fuse
● Check availabilityFWJ-20A14F: 20A; 1000V AC / 800V DC; Class aR; High-Speed (aR); 25kA AC / 50kA DC.
Rated Current20A
Rated Voltage1000V AC / 800V DC
Breaking Capacity25kA AC / 50kA DC
Package14x67mm
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Part NumberFWJ-20A14FBrandEaton BussmannRequested Qty
Eaton Bussmann FWJ-20A14F is a 14x67mm high-speed fuse rated 20A at 1000V AC / 800V DC. Interrupting rating: 25kA AC / 50kA DC. Typical applications: DC common bus, DC drives, Power converters/rectifiers, High-voltage EV auxiliary circuits. Source: Bussmann Full Line Catalog 1007 (2018), page 4-33.
Quick answer, specifications & FAQ
Direct answer
Eaton Bussmann High-Speed Semiconductor Fuse FWJ-20A14F is rated 20A, 1000V AC / 800V DC, High Speed, 14x67mm. Breaking capacity 25kA AC / 50kA DC, certifications UL Recognized|CE. Listed applications: DC Bus Protection, High-voltage EV auxiliary circuits, Motor Drives, Power conversion. FWJ-20A14F: 20A; 1000V AC / 800V DC; Class aR; High-Speed (aR); 25kA AC / 50kA DC.
Key specifications
- Part number: FWJ-20A14F
- Brand: Eaton Bussmann
- Rated current: 20A
- Rated voltage: 1000V AC / 800V DC
- Breaking capacity: 25kA AC / 50kA DC
- Fuse speed: High Speed
- Package size: 14x67mm
- Terminal type: Ferrule
- Certifications: UL Recognized|CE
- Typical lead time: 12-16 weeks
- Source: Bussmann Full Line Catalog 1007 (2018), page 4-33.; Watts loss at rated current: 9 W
Frequently asked questions
What are the current and voltage ratings of FWJ-20A14F?
FWJ-20A14F is rated 20A at 1000V AC / 800V DC.
What is the breaking capacity of FWJ-20A14F?
FWJ-20A14F has a breaking capacity of 25kA AC / 50kA DC. Confirm this covers the available fault current at the installation point.
What package size does FWJ-20A14F use?
FWJ-20A14F uses 14x67mm package size.
Which standards and approvals apply to FWJ-20A14F?
FWJ-20A14F is listed under UL Recognized|CE.
What is FWJ-20A14F used for?
FWJ-20A14F is listed for DC Bus Protection, High-voltage EV auxiliary circuits, Motor Drives, Power conversion applications. Verify suitability for your circuit before ordering.
What are the ordering terms for FWJ-20A14F?
FWJ-20A14F: typical lead time 12-16 weeks. Submit a quote request for a firm quotation.
Data sources
- Part number
- FWJ-20A14F
- Brand
- Eaton Bussmann
- Last updated
- 2026-09-19
- Canonical URL
- https://fusestock.com/products/eaton-bussmann-fwj-20a14f-20a-1000v-ac-800v-dc-class-ar-14x67mm-high-speed-fuse/
Technical Specifications
- Part Number
- FWJ-20A14F
- Manufacturer Part Number
- FWJ-20A14F
- Series
- FWJ Series (14x67mm aR High-Speed Fuse)
- Fuse Type
- High-Speed Semiconductor Fuse
- Current Rating
- 20A
- Voltage Rating
- 1000V AC / 800V DC
- AC / DC
- AC/DC
- Breaking Capacity
- 25kA AC / 50kA DC
- Package / Dimensions
- 14x67mm
- Mounting
- Ferrule / Clip
- Application
- DC Bus Protection · High-voltage EV auxiliary circuits · Motor Drives · Power conversion
- Terminal Type
- Ferrule
- Fuse Speed
- High Speed
- Utilization Class
- aR
- Approvals
- CE · UL Recognized
- Certifications
- UL Recognized|CE
- Reference Lead Time
- 12-16 weeks
- Source
- Bussmann Full Line Catalog 1007 (2018), page 4-33.; Watts loss at rated current: 9 W
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