Bussmann FWK-40A25F 40A 750V DC FWK high-speed DC ferrule fuse
● LT: 12-16wEaton Bussmann FWK-40A25F, 40A, 750V DC; interrupting rating 50kA @ 750V DC.
Rated Current40A
Rated Voltage750V DC
Breaking Capacity50kA @ 750V DC
Package20×127mm or 25×146mm
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Part NumberFWK-40A25FBrandEaton BussmannRequested Qty
Eaton Bussmann FWK-40A25F is a Class gG high-speed dc FWK high-speed DC ferrule fuse rated 40A at 750V DC. Interrupting rating: 50kA @ 750V DC. Standard(s): IEC 60269.
Quick answer, specifications & FAQ
Direct answer
Eaton Bussmann High Speed Fuse FWK-40A25F is rated 40A, 750V DC, High Speed, 20×127mm or 25×146mm. Breaking capacity 50kA @ 750V DC, operating temperature -40°C to +125°C, certifications CE. Listed applications: DC Bus Protection, Power conversion, Solar PV Protection, UPS systems. Standards: IEC 60269. Eaton Bussmann FWK-40A25F, 40A, 750V DC; interrupting rating 50kA @ 750V DC.
Key specifications
- Part number: FWK-40A25F
- Brand: Eaton Bussmann
- Rated current: 40A
- Rated voltage: 750V DC
- Breaking capacity: 50kA @ 750V DC
- Fuse speed: High Speed
- Package size: 20×127mm or 25×146mm
- Dimensions: 20×127mm or 25×146mm
- Terminal type: Ferrule or Bolted
- Operating temperature: -40°C to +125°C
- Certifications: CE
- Standards: IEC 60269
Frequently asked questions
What are the current and voltage ratings of FWK-40A25F?
FWK-40A25F is rated 40A at 750V DC.
What is the breaking capacity of FWK-40A25F?
FWK-40A25F has a breaking capacity of 50kA @ 750V DC. Confirm this covers the available fault current at the installation point.
What package size does FWK-40A25F use?
FWK-40A25F uses 20×127mm or 25×146mm package size.
Which standards and approvals apply to FWK-40A25F?
FWK-40A25F is listed under IEC 60269 / CE.
What is FWK-40A25F used for?
FWK-40A25F is listed for DC Bus Protection, Power conversion, Solar PV Protection, UPS systems applications. Verify suitability for your circuit before ordering.
What are the ordering terms for FWK-40A25F?
FWK-40A25F: typical lead time 12-16 weeks, minimum order 10 pcs. Submit a quote request for a firm quotation.
Data sources
- Part number
- FWK-40A25F
- Brand
- Eaton Bussmann
- Last updated
- 2026-10-10
- Canonical URL
- https://fusestock.com/products/eaton-bussmann-fwk-40a25f/
Technical Specifications
- Part Number
- FWK-40A25F
- Manufacturer Part Number
- FWK-40A25F
- Series
- FWK Series (High Speed Fuse 750Vdc)
- Fuse Type
- High Speed Fuse
- Current Rating
- 40A
- Voltage Rating
- 750V DC
- AC / DC
- DC
- Breaking Capacity
- 50kA @ 750V DC
- Pre-arcing I²t
- 70.
- Total I²t
- 250
- Operating Temperature
- -40°C to +125°C
- Package / Dimensions
- 20×127mm or 25×146mm
- Mounting
- Bolt Mount · Fuse Holder
- Application
- DC Bus Protection · Power conversion · Solar PV Protection · UPS systems
- Standard
- IEC 60269
- Terminal Type
- Ferrule or Bolted
- Fuse Speed
- High Speed
- Utilization Class
- gG
- Approvals
- CE
- Certifications
- CE
- Reference Lead Time
- 12-16 weeks
- Minimum Order
- 10 pcs
- Sample Status
- Contact for Availability
- Clearing I²t
- 250.
- Watt Loss @ In
- 8.5W
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