Eaton FNQ-1 Fuse - 10 kAIC at 500 VAC, CE RoHS
Part Number: FNQ-1
Quick Summary
The Eaton FNQ-1 fuse provides reliable motor-circuit protection for inrush-heavy loads. It is designed to prevent nuisance trips while guarding equipment during startup, reducing downtime across production lines. CE marked and RoHS compliant, this Bussmann series device also meets stringent safety and environmental standards. With a 1 A rating, 500 V capability, and a 10 kAIC interrupt rating, FNQ-1 supports compact protection in control panels and VFD applications. The non-indicating design minimizes maintenance touches, while ferrule-end connections enable quick, secure field replacement. For engineers seeking easy compliance, scalable protection, and proven performance, the FNQ-1 delivers straightforward integration with Eaton's Bussmann fuse family and standard fuse blocks.
Product Information
Extended Description
FNQ-1 Eaton: Eaton Bussmann series FNQ fuse, Time-delay, Motor control transformers, Circuits with in-rush currents, 1 A, Non-indicating, Ferrule end x ferrule end, 10 kAIC at 500 Vac, Nickel-plated bronze endcap, Standard, 500 V
Product Name
Eaton Bussmann series FNQ fuse
Catalog Number
FNQ-1
UPC
051712786133
EAN
5027590449847
Product Length/Depth
0.41 in
Product Height
1.5 in
Product Width
0.41 in
Product Weight
0.175 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
1 A
Interrupt rating
10 kAIC at 500 Vac
Voltage rating
500 V
Material
Nickel-plated bronze endcap
Packaging type
Standard
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Special features
Non-indicating
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - FNQ-1
FNQ-1~BUSS MIDGET FUSE
Datasheet - FNQ-30
Time-delay design enables the FNQ-1 to ride through magnetic inrush without tripping, protecting small motors and control transformers. This translates to fewer downtime events and smoother line starts, especially in applications with soft-start drives. The 1 A amperage rating is chosen for circuits where you need precise protection without excessive current interruption. In practice this means reduced nuisance trips on startup while still delivering fast clearing under fault conditions. With a 10 kAIC interrupt rating at 500 Vac, the FNQ-1 can safely interrupt high fault currents typical of industrial power feeds and motor circuits, providing installers confidence in panel density and compliance with facility fault-current requirements. Ferrule-end x ferrule-end connections and nickel-plated bronze endcaps optimize contact reliability and corrosion resistance, enabling quick replacements in field service. The standard packaging keeps stock organized and reduces mis-assemblies, while non-indicating operation minimizes indicator management during maintenance. CE marking and RoHS compliance underpin global acceptance, and compatibility with Eaton Bussmann series supports easy cross-reference in BOMs. This fuse integrates neatly with standard fuse blocks, motor protection schemes, and control transformers, delivering predictable performance without demanding new infrastructure.
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FAQs
FNQ-1 features ferrule-end connections designed for quick, secure installation in standard Bussmann fuse blocks. Verify the block accepts 0.41 in wide ferrule ends and that the device sits fully seated in the holder. Because the unit is non-indicating, use established maintenance checklists to confirm correct seating and continuity after installation. Ensure the panel wiring follows the rated 500 V voltage class and that the 1 A rating aligns with the protected circuit load. Routine inspection should focus on endcap integrity and ferrule contact cleanliness to maintain reliable operation in motor control circuits.
The FNQ-1 provides a 1 A amperage rating, a 500 V voltage rating, and a 10 kAIC interrupt rating at 500 Vac. These ratings support protection for motor control circuits and transformers while safely interrupting fault currents typical in industrial power feeds. The device also carries CE marking and RoHS compliance, aligning with global safety and environmental standards for panel assemblies and machinery.
Yes. The FNQ-1 is a time-delay (slow-blow) fuse specifically designed to tolerate brief inrush currents common in motor control transformers and drive panels. This characteristic reduces nuisance trips during startup while maintaining fast clearing under sustained faults. Its 1 A rating keeps protection targeted to low-current circuits without sacrificing motor protection in populated control panels.
The FNQ-1 is CE marked and RoHS compliant, signaling conformity with European safety, health, and environmental requirements. These certifications matter for regulatory compliance, supplier qualification, and warranty considerations in industrial installations. They also facilitate global procurement by ensuring the fuse aligns with common electrical protection standards in machinery and control panels.
By matching a time-delay design to motor startup profiles, FNQ-1 reduces nuisance trips and associated downtime, delivering predictable protection with fewer service interruptions. Its ferrule-end connections and durable nickel-plated endcaps simplify field replacements, lowering maintenance time and stock complexity. Over the equipment lifecycle, this translates to improved line uptime, lower labor costs, and better BOM standardization in Eaton Bussmann fuse ecosystems.