Eaton FWJ-1A6F High Speed Fuse - UL 700 Vac / IEC 690 Vac
Part Number: FWJ-1A6F
Quick Summary
The Eaton FWJ-1A6F high-speed fuse protects electrical circuits in industrial control and power-drive systems, delivering fast fault interruption to minimize damage and downtime. When selecting protection, engineers often battle nuisance trips and inconsistent fuse ratings across AC and DC sections. This device carries UL-listed 700 Vac ratings and IEC-rated 690 Vac, with 800 Vdc capability for 5–50 A, enabling safer operation across mixed networks. By standardizing on the FWJ-1A6F within the Eaton Bussmann family, teams gain reliable performance, streamlined procurement, and improved service life for critical equipment. These design choices support compliance with common protection standards while supporting cost-efficient maintenance and spare-part strategies for panel builders and OEMs.
Product Information
Extended Description
FWJ-1A6F Eaton: Eaton Bussmann series FWJ high speed fuse, 700 Vac (UL), 690 Vac (IEC), 800 Vdc (5-50A), Standard
Product Name
Eaton Bussmann series FWJ high speed fuse
Catalog Number
FWJ-1A6F
UPC
051712725965
EAN
5027590171014
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 in
Product Weight
0.7 lb
Warranty
Not Applicable
Compliances
Contact factory Contact Manufacturer
Voltage rating
700 Vac (UL), 690 Vac (IEC), 800 Vdc (5-50 A)
Packaging type
Standard
Fuse indicator
Non Indicating
Ultra-fast interruption minimizes arc damage and thermal stress, translating into longer equipment life and fewer outages. This improves maintenance costs and line reliability in harsh industrial environments, especially in motor drives and inverter circuits. Wide voltage and DC ratings enable single-part protection across AC and DC segments, reducing part counts and simplifying spares inventory for control panels and power distribution. The non-indicating fuse reduces panel clutter and aligns with external signaling strategies, making it easier to manage status in busy control rooms. Standard packaging and compatibility with Bussmann series holders ease installation and cross-compatibility with existing protection schemes in industrial cabinets and OEM assemblies. Access to official Eaton catalogs and datasheets supports correct selection, safe wiring practices, and faster engineering cycles when upgrading legacy panels.
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FAQs
When installing the FWJ-1A6F, ensure compatibility with Eaton Bussmann series fuse blocks and follow standard de-energize/lockout procedures. Verify voltage and current ratings match the protected circuit, and use proper tightening torque on fuse holders to maintain electrical contact. Keep spare FWJ-1A6F units readily accessible for quick replacement to minimize downtime during fault events.
FWJ-1A6F is rated at 700 Vac (UL) and 690 Vac (IEC), with a 800 Vdc rating for 5–50 A. These ratings enable safe protection across mixed AC and DC sections in industrial equipment, such as control panels, power supplies, and motor drives, reducing the need for multiple device types in a single installation.
Yes. The FWJ-1A6F supports up to 800 Vdc for 5–50 A, making it suitable for DC bus protection in motor drives and DC power circuits, while maintaining fast interrupt characteristics typical of high-speed fuses used in demanding industrial environments.
The FWJ-1A6F carries UL listed ratings for 700 Vac and IEC ratings of 690 Vac, reflecting compliance with common electrical protection standards. Documentation indicates manufacturer-level compliances, and users should consult the latest Eaton datasheets and catalogs for any additional regulatory notes.
Choosing FWJ-1A6F offers faster fault interruption, reducing downtime and arc damage, while its broad AC and DC ratings simplify part selection and inventory. This leads to lower total cost of ownership, streamlined procurement, and more predictable protection across mixed electrical systems in panels and drives.