Eaton FNQ-20 Fuse - 20 A at 500 VAC, 10 kAIC
Part Number: FNQ-20
Quick Summary
FNQ-20 fuse from Eaton protects control circuits and motor loads in industrial applications. Engineers often face nuisance trips during motor start-up and inrush events, which disrupt production. This device is CE marked and RoHS compliant, supporting regulatory requirements, and it features a non-indicating status for quick fault identification and reduced panel clutter. With a 20 A rating, a 500 V rating, and ferrule-end connections, it delivers reliable protection in compact form factors suitable for standard panels, while offering easy replacement and compatibility with Bussmann series components.
Product Information
Extended Description
FNQ-20 Eaton: Eaton Bussmann series FNQ fuse, Time-delay, Motor control transformers, Circuits with in-rush currents, 20 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-20
UPC
051712786355
EAN
5027590060493
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
20 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-20
FNQ-20~BUSS MIDGET FUSE
Datasheet - FNQ-30
Time-delay operation aligns with motor start-ups and transformers, reducing nuisance trips and enabling controlled acceleration. In practice, this means fewer panel resets and smoother production lines in circuits with inrush currents. The 10 kAIC interrupt rating provides robust fault current protection, safeguarding downstream equipment and reducing the risk of collateral damage during short circuits. Non-indicating functionality minimizes visual panel clutter and simplifies fuse management in dense installations, improving maintenance turnaround. Ferrule-end x ferrule-end connections enable quick, reliable installation in standard control panels and compatible fuse holders, reducing installation time and mis-wiring risks. CE Marking and RoHS compliance support regulatory requirements across EU markets, helping procurement avoid non-compliant components while maintaining long-term supplier continuity. The FNQ-20’s compact footprint—0.41 in width, 0.41 in depth, and 1.5 in height—combined with nickel-plated bronze endcaps delivers durable, space-efficient protection in tight enclosures, ideal for panel builders and system integrators.
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FAQs
FNQ-20 uses ferrule-end terminals designed for straightforward panel mounting. Ensure the fuse is oriented with clear visibility in the panel, secure the ferrule connections firmly, and mount in a compatible holder or fuse block. The compact 0.41 in width and 1.5 in height fit standard enclosure spaces without crowding adjacent components.
FNQ-20 is rated for 20 A current, 500 V operating voltage, and an interrupt rating of 10 kAIC at 500 VAC, making it suitable for circuits with inrush currents and motor control loads.
Yes. The FNQ-20 is a time-delay fuse designed specifically for circuits with inrush currents and motor control transformers, reducing nuisance trips while protecting downstream devices during startup transients.
FNQ-20 is CE Marked and RoHS compliant, aligning with European regulatory requirements and environmental standards for industrial electrical protection components.
Benefits include fewer production interruptions due to fewer nuisance trips, easier panel maintenance thanks to non-indicating design, durable ferrule-end connections for quick replacements, and compact form factor reducing panel space and labor costs during installation.