Eaton FWH-12.5A6F high speed fuse - UL Recognized
Part Number: FWH-12.5A6F
Quick Summary
Eaton FWH-12.5A6F high speed fuse provides fast protection for DC drives and power converters in industrial panels. Engineers often grapple with nuisance blowouts and downtime caused by slow protection response or miscoordination in high-speed DC systems. UL Recognized, CSA Certified, and CE Marked status ensure regulatory compliance across North American and European installations. This device also supports ferrule-end connections and compact form factor, delivering reliable protection with minimal installation effort. In practice, adopting this fuse translates to improved equipment uptime, reduced maintenance costs, and a simpler upgrade path for existing DC bus protections, making it a practical choice for mission-critical automation projects.
Product Information
Extended Description
FWH-12.5A6F Eaton: Eaton Bussmann series FWH high speed fuse, DC common bus, DC drives, power converters/rectifiers, reduced voltage starters, 1000 Vac, 800 Vdc, 12.5A RMS (200% minimum opening current at rated voltage), 50 kAIC at 0.25-20A, 20 kAIC at 25-30A
Product Name
Eaton Bussmann series FWH high speed fuse
Catalog Number
FWH-12.5A6F
UPC
051712796705
EAN
5027590061216
Product Length/Depth
1.25 in
Product Height
0.25 in
Product Width
0.25 in
Product Weight
0.4 lb
Warranty
Not Applicable
Compliances
CE Marked
Certifications
UL Recognized CSA Certified
Amperage Rating
12.5A RMS (200% minimum opening current at rated voltage)
Interrupt rating
50 kAIC at 0.25-20A 20 kAIC at 25-30A
Voltage rating
1000 Vac, 800 Vdc
Watt losses
3.53 W
Packaging type
Standard
Connection
Ferrule end x ferrule end
Fuse indicator
Non Indicating
Feature: 12.5A RMS rating with a 1000 Vac / 800 Vdc voltage rating and 200% minimum opening current at rated voltage. Business Impact: Fast, predictable fault clearance protects DC buses and drive electronics, reducing arc duration and downstream damage. Application: Ideal for DC drives, power converters, rectifiers, and reduced voltage starters in compact control panels. Feature: 50 kAIC interrupt rating at 0.25-20A and 20 kAIC at 25-30A. Business Impact: Robust protection against high fault currents, limiting conductor and component damage during faults. Application: DC bus protection in high-inrush or startup-heavy systems. Feature: Ferrule end x ferrule end connections and non-indicating design. Business Impact: Easy, reliable installation with straightforward status handling in the control system. Application: Panel wiring and field replacements in automation cabinets. Feature: Compact dimensions and weight (1.25 in L, 0.25 in W/H, 0.4 lb). Business Impact: Space-saving, flexible mounting, and simpler stocking for OEMs. Application: Tight control cabinets and modular assemblies. Feature: Compliance and energy efficiency with CE Marked, UL Recognized, CSA Certified; watt losses 3.53 W. Business Impact: Regulatory peace of mind and reduced cooling loads, enhancing overall enclosure efficiency. Application: Global deployments requiring standard certifications and predictable thermal performance.
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FAQs
The FWH-12.5A6F uses ferrule end x ferrule end connections, which simplifies panel wiring and ensures reliable contact in standard control cabinets. With a compact 1.25 in length, it fits behind standard Din rail layouts and can be sourced as a common replacement part, reducing lead times during maintenance.
The fuse provides 12.5A RMS at 1000 Vac and 800 Vdc, with a 50 kAIC interrupt rating from 0.25 to 20A and 20 kAIC from 25 to 30A. These ratings support fast fault clearance in high-energy DC buses, protecting conductors and power electronics from catastrophic faults.
Yes. It is designed for DC drives, power converters, and rectifiers, delivering fast opening at rated voltage with high interrupt capability. Its compact size and non-indicating design simplify integration in drive enclosures while meeting stringent protection requirements for modern DC propulsion and automation systems.
This fuse is UL Recognized, CSA Certified, and CE Marked. These certifications confirm regulatory compliance for North American and European installations, simplify supplier qualification, and reduce approval time for new machine builds or retrofits in regulated industries such as manufacturing and process automation.
The fuse reduces downtime by delivering rapid, predictable protection and minimizes nuisance trips due to fast response. Its non-indicating design lowers maintenance checks, while robust ratings lower risk of collateral damage during faults. Together, these factors translate to improved equipment uptime, easier stocking, and a favorable total cost of ownership for automation projects.