Eaton FNA-1/4 Fuse - CE Marked Dual-Element Time-Delay
Part Number: FNA-1/4
Quick Summary
The Eaton Bussmann FNA fuse is a time-delay protection device for inductive and electronic circuits in control panels. Engineers often face nuisance tripping and crowded enclosures when protecting low-current loads; this fuse is designed to minimize that risk while fitting compact spaces. It is CE Marked for European compliance and engineered for robust overload cycling, helping you meet reliability targets without overdesign. With ferrule-end connections and silver-plated pins, it delivers dependable electrical contact, while its 0.25 A rating and 250 V capability support scalable protection for small control circuits. This makes it a cost-effective choice for panel builders seeking durable, easy-to-replace protection in automated systems.
Product Information
Extended Description
FNA-1/4 Eaton: Eaton Bussmann series FNA fuse, Time-delay fuse, Inductive load circuits, Electronic circuits, 0.25 A, Dual, Non-indicating, Ferrule end x ferrule end, 10 kAIC at 125 Vac, 35 AIC at 250 Vac, Silver-plated pin, Standard, 250 V
Product Name
Eaton Bussmann series FNA fuse
Catalog Number
FNA-1/4
UPC
051712713726
EAN
5027590425858
Product Length/Depth
0.35 in
Product Height
1.46 in
Product Width
0.35 in
Product Weight
0.1 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
0.25 A
Interrupt rating
35 AIC at 250 Vac 10 kAIC at 125 Vac
Voltage rating
250 V
Material
Silver-plated pin
Number of elements
Dual
Packaging type
Standard
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Special features
Superior overload and cycling capabilities
FNA-1/4~FNA-1-4~FUSETRON DUAL-ELEMENT INDICATING
FNA-1/4~FNA-1-4~FUSETRON DUAL-ELEMENT INDICATING
Eaton Specification Sheet - FNA-1/4
Feature → Business Impact → Application: The FNA-1/4’s time-delay (dual-element) design reduces nuisance trips in inductive loads, extending component life and stabilizing system uptime in motor starters and relays. Result: fewer maintenance events and lower total cost of ownership for machine controls across production lines. Application: control panels and automation cabinets needing reliable overload protection without unnecessary interruptions. Feature → Business Impact → Application: The 0.25 A amperage with a 250 V rating provides precise protection for low-current circuits while supporting standard European voltage levels. Result: improved safety margins and consistent trip behavior in electronic control circuits. Application: small control circuits and signaling networks in industrial equipment. Feature → Business Impact → Application: Ferrule-end x ferrule-end connections and silver-plated pins deliver low contact resistance and durable terminations. Result: easier installation, repeatable performance, and extended fuse life in panel assemblies. Application: electrical protection modules with tight mounting tolerances. Feature → Business Impact → Application: Non-indicating fuse with standard packaging simplifies stock management and reduces unnecessary indicators. Result: streamlined maintenance procedures and faster replacement in production environments. Application: factory floor panels and distributed control systems. Feature → Business Impact → Application: CE Marking supports regulatory compliance for European markets. Result: faster market entry and reduced compliance risk for integrated protection solutions. Application: multinational manufacturing environments needing consistent standards across sites.
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FAQs
To install, align and insert the ferrule-end conductors firmly into the fuse slots, ensuring the ferrule ends are fully seated for a secure connection. Verify the 0.25 A rating matches the protected circuit, then recheck clearances and cable routing to avoid impact on the ferrule ends during panel operation.
The fuse is rated at 0.25 A and 250 V, with an interrupt rating of 35 AIC at 250 Vac and 10 kAIC at 125 Vac. These specifications support protection for small-control circuits while remaining robust against short-circuit events in typical industrial environments.
Yes. The FNA-1/4 is designed as a time-delay, dual-element fuse, optimized for inductive loads commonly found in motor starters and relays. This design minimizes nuisance trips while maintaining reliable protection during transient inrush conditions.
Yes, the FNA-1/4 is CE Marked, indicating conformity with applicable European safety, health, and environmental requirements. This helps streamline regulatory compliance for machines and systems deployed in the European market.
The device measures 0.35 in wide, 0.35 in deep, and 1.46 in high, with a weight of 0.1 lb. It ships in standard packaging, and features ferrule-end x ferrule-end connections with a non-indicating indicator for straightforward replacement in busy panel environments.