Eaton FWH-350A High Speed Fuse - UL Recognized
Part Number: FWH-350A
Quick Summary
The Eaton FWH-350A high speed fuse provides fast overcurrent protection for industrial control panels and motor drives. In practice, engineers often battle nuisance trips and downtime caused by slow protection in demanding 1000 Vac systems. This device carries CE Marking and RoHS compliance for European installations, plus CSA Certified UL Recognized status for North American safety approvals. Its compact blade-end and stud mounting, along with the Bussmann series documentation, simplifies installation, testing, and future upgrades. For businesses, it supports robust protection strategies that reduce unplanned outages and extend equipment life while aligning with standard electrical protection and circuit control objectives.
Product Information
Extended Description
FWH-350A Eaton: Eaton Bussmann series FWH high speed fuse, 1000 Vac, 800 Vdc, 350A RMS, 200 kAIC at 1000 Vac, 50 kAIC at 500 Vdc, Non Indicating, High speed fuse, Blade end X blade end, Stud
Product Name
Eaton Bussmann series FWH high speed fuse
Catalog Number
FWH-350A
UPC
051712150170
Product Length/Depth
1.69 in
Product Height
1.61 in
Product Width
4.52 in
Product Weight
0.52 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Certifications
CSA Certified UL Recognized
Amperage Rating
350A RMS
Interrupt rating
50 kAIC at 500 Vdc 200 kAIC at 1000 Vac
Voltage rating
1000 Vac, 800 Vdc
Watt losses
58 W
Packaging type
Standard
Connection
Blade end x blade end
Fuse indicator
Non Indicating
Mounting method
Stud
Bussmann series complete full line catalog no. 1007
Eaton Specification Sheet - FWH-350A
Bussmann series FWH 6x32mm high speed fuse data sheet no. 720038
Bussmann series FWH 6x32mm high speed fuse data sheet no. 720038
Datasheet - FNQ-30
High-speed clearing performance ensures fast fault interruption, reducing arc energy and protecting downstream components in 1000 Vac and 800 Vdc circuits. Business impact: fewer nuisance trips and shorter downtime in critical automation systems such as motor drives and control panels. Application: ideal for 6x32mm body high-speed fuses used in industrial power distribution. The 350A RMS rating paired with 200 kAIC at 1000 Vac and 50 kAIC at 500 Vdc provides robust short-circuit protection while maintaining system uptime. Physical form factors with blade-end x blade-end connections and stud mounting simplify retrofit and new installs, reducing wiring complexity and installation time. Compatibility with Bussmann data sheets and Eaton spec sheets supports compliant documentation and streamlined procurement. Certification coverage (CE RoHS, UL Recognized, CSA) ensures regulatory alignment across global sites, easing audits and supplier onboarding. Non-indicating design minimizes panel clutter and maintenance costs, while standard packaging supports easy stocking and replacement planning. In practice, engineers appreciate the combination of high protection levels, clear installation paths, and accessible technical resources for rapid commissioning and ongoing reliability.
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FAQs
The FWH-350A supports blade end x blade end connections and stud mounting, allowing flexible integration in panelboards and switchgear. When installing, ensure correct terminal alignment, secure mounting hardware to the stud location, and follow Eaton’s datasheet guidelines for torque and clearance. This approach minimizes installation time and reduces the likelihood of conductive faults due to misalignment.
The fuse is rated for 350 A RMS with a voltage rating of 1000 Vac and 800 Vdc. Its interrupt ratings are 200 kAIC at 1000 Vac and 50 kAIC at 500 Vdc, with watt losses listed as 58 W. It is a non-indicating, high-speed device designed to clear faults quickly in demanding power circuits.
Yes. The FWH-350A is CE Marked and RoHS Compliant for European installations and carries CSA Certified UL Recognized status, providing robust safety validation for North American applications. These certifications support regulatory compliance and supplier qualification in multi-site deployments.
This fuse is ideal for industrial control panels, motor drives, and power distribution applications requiring high-speed protection. Its 6x32mm high-speed fuse family characteristics, blade and stud mounting compatibility, and 1000 Vac rating make it suitable for demanding automation environments where downtime must be minimized and equipment life preserved.
Documentation is available through Eaton’s resources: the Eaton Specification Sheet for FWH-350A, Bussmann series data sheet no. 720038, the Bussmann full-line catalog no. 1007, and related service bulletins. These assets provide installation guidance, electrical ratings, and compatibility notes to support procurement, design reviews, and maintenance planning.