Eaton FNQ-8 Fuse - 10 kAIC at 500 Vac CE RoHS
Part Number: FNQ-8
Quick Summary
The FNQ-8 fuse from Eaton provides reliable overcurrent protection for motor loads and control circuits in industrial environments. It helps prevent nuisance trips during startup and inrush, reducing unplanned downtime and maintenance costs. CE marked and RoHS compliant, this 8 A device delivers a 10 kAIC interrupt rating at 500 V, supporting safe, compliant electrical protection. For engineers and procurement teams, the FNQ-8 combines compact form with robust performance, enabling easy installation across motor control panels and safety circuits, while improving overall equipment reliability and uptime. Designed for compatibility with standard ferrule-end connections, it streamlines panel wiring and serviceability. This makes future upgrades faster and reduces total cost of ownership.
Product Information
Extended Description
FNQ-8 Eaton: Eaton Bussmann series FNQ fuse, Time-delay, Motor control transformers, Circuits with in-rush currents, 8 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-8
UPC
051712786324
Product Length/Depth
1.5 in
Product Height
0.41 in
Product Width
0.41 in
Product Weight
0.175 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
8 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
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - FNQ-8
FNQ-8~BUSS MIDGET FUSE
Datasheet - FNQ-30
Time-delay operation to handle circuits with inrush currents is a core feature of the FNQ-8. This capability minimizes nuisance trips during motor startup and transient loads, protecting contactors and wiring while reducing equipment wear. In practice, engineers see fewer false trips in conveyors, pumps, and fans when the protect device accommodates brief surges without compromising safety. A robust 10 kAIC interrupt rating at 500 Vac provides reliable fault clearance for motors and machines, helping prevent fault propagation across panels. This overstress tolerance supports safer operation in demanding environments where short circuits can quickly escalate. The FNQ-8's ferrule-end connections on both ends and a non-indicating body simplify installation and inspection. The ferrule ends ensure a secure, vibration-resistant fit in standard fuse blocks, while the absence of a visible indicator reduces panel clutter in clean-room or automation cabinets. This combination speeds up panel wiring and reduces maintenance checks during routine service. CE marking and RoHS compliance ensure the FNQ-8 meets regional regulatory requirements, easing cross-border sourcing and system integration. The device uses nickel-plated bronze endcaps for corrosion resistance in challenging environments, reinforcing longevity in outdoor or humid facilities. Packaging is standard, which streamlines stocking, ordering and replenishment processes within maintenance inventories. Designed for ferrule-end to ferrule-end connection, the FNQ-8 is compatible with Bussmann and Eaton protection schemes, enabling quick cross-reference for spares. Its compact form factor fits motor-control panels with limited space, supporting faster installation and easier future upgrades. In practice, technicians can standardize on this fuse across multiple lines, achieving consistency and cost savings in maintenance programs. Beyond basics, the FNQ-8 is well suited for projects demanding consistent electrical protection across mixed loads. The time-delay characteristic reduces energy spikes and extends contact life. In typical plant environments, this translates to longer interval between maintenance outages, lower replacement rates for contactor coils, and more predictable budgeting for spare parts and energy consumption.
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FAQs
FNQ-8 uses ferrule-end to ferrule-end connections, designed for standard Bussmann/Eaton fuse blocks and motor-control panels. This ferrule-ended design simplifies wiring, reduces terminal stress, and speeds commissioning. If you’re retrofitting existing panels, verify compatible fuse blocks and torque specs in the Eaton specification sheet to ensure reliable seating and vibration resistance in demanding industrial environments.
The FNQ-8 is a time-delay device that accepts brief surges typical of motor start-up, reducing nuisance trips that can interrupt production. This improves pump, fan, and conveyor reliability while protecting conductors and contactors from peak currents. For best results, size the device to the motor's locked-rotor current and inrush profile per the Eaton datasheet.
Yes. The FNQ-8 is rated at 500 V with an 8 A amperage rating and a 10 kAIC interrupt capacity, making it appropriate for a wide range of industrial motor control applications. It provides reliable protection for circuits, contactors, and control transformers, while meeting typical plant safety and performance requirements.
FNQ-8 is CE marked and RoHS compliant, reflecting adherence to European safety, environmental, and product-safety standards. These certifications simplify procurement and cross-border integration, helping design teams avoid last-minute compliance gaps. While the device is not specified as SIL-rated, its robust interrupt rating and standard ferrule-end connections support reliable protection in automation and process industries.
Adopting the FNQ-8 reduces downtime from nuisance trips and shortens maintenance cycles by delivering reliable overcurrent protection with a compact, easy-to-install form factor. Its time-delay design minimizes wear on contactors, while standard ferrule-end connections streamline spares stocking. Across multiple lines, this translates to fewer panel upgrades and lower total cost of ownership.