Eaton FNQ-2-1/2 Fuse - 10 kAIC at 500 Vac
Part Number: FNQ-2-1/2
Quick Summary
The Eaton FNQ-2-1/2 fuse protects motors and control circuits in industrial equipment. In demanding environments, nuisance trips from inrush can cause costly downtime and lost productivity. This time-delay design is CE marked and RoHS compliant, with a 500 V rating and a 10 kAIC interrupt capacity, delivering reliable protection for critical loads. It aligns with Bussmann series standards and supports motor starters, transformers, and panel assemblies, helping you meet regulator requirements while simplifying procurement and maintenance across multiple sites.
Product Information
Extended Description
FNQ-2-1/2 Eaton: Eaton Bussmann series FNQ fuse, Time-delay, Motor control transformers, Circuits with in-rush currents, 2.5 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-2-1/2
UPC
051712786263
EAN
5027590449977
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
2.5 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-2-1/2
FNQ-2-1/2~FNQ-2-1-2~BUSS MIDGET FUSE
Time-delay protection in the FNQ-2-1/2 minimizes nuisance trips on inrush-heavy loads. This feature reduces unplanned downtime by allowing short startup surges to pass without blowing, while still interrupting sustained faults. In motor control and transformer circuits, the time-delay characteristic ensures smooth startups and steady operation, improving overall equipment availability and productivity. With a 2.5 A amperage rating and 500 V operating voltage, it safeguards control circuits and small motors without over-protection, enabling efficient conductor sizing and energy use. The 10 kAIC interrupt rating at 500 Vac provides robust fault interruption, enhancing safety margins for high-energy faults in industrial environments. Ferrule end x ferrule end connections and nickel-plated bronze endcaps deliver reliable contact integrity and corrosion resistance, making installations straightforward in harsh settings and ensuring long-term performance. Packaged in standard Bussmann series format, this fuse integrates easily with existing motor starters, transformers, and control panels, supporting streamlined procurement and maintenance across installations. While it is non-indicating, pairing with a control scheme or indicator device ensures monitoring and rapid fault diagnosis in automation systems.
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FAQs
FNQ-2-1/2 uses ferrule end to ferrule end connections, enabling quick, reliable terminations on standard ferrule cables. For installation, pair it with compatible ferrule terminals and ensure the circuit rating matches 2.5 A at up to 500 V. Use the standard packaging as a reference point and confirm the ferrule size matches your conductor for a secure fit.
Yes. The FNQ-2-1/2 is a time-delay fuse designed to tolerate motor inrush while protecting downstream circuits. With a 10 kAIC interrupt rating at 500 Vac, it can ride out startup surges without nuisance tripping, reducing downtime. It is well-suited for motor starters and transformer circuits where controlled degradation prevents outages and supports reliable operation.
Certifications for the FNQ-2-1/2 include CE marking and RoHS compliance, indicating conformity with European safety, health, and environmental standards. While UL or other registries aren’t listed in the provided spec, these marks support regulatory compliance in many regulated industrial environments and align with European procurement requirements for routine electrical protection components.
The fuse measures 0.41 inches in length and width, with a height of 1.5 inches. It weighs approximately 0.175 pounds. This compact form factor fits standard fuse holders and panel spaces, enabling straightforward retrofits and consistent mounting in control cabinets and motor control centers.
FNQ-2-1/2 is part of the Bussmann series and uses standard ferrule-end terminations with standard packaging. It supports easy substitution in existing Bussmann catalogs and wiring schemes, facilitating consistent spare parts stocking and component compatibility across motor control and transformer installations in industrial automation environments.