Eaton FNA-3 fuse - 250 V, CE Marked, Time-delay
Part Number: FNA-3
Quick Summary
The Eaton Bussmann FNA-3 fuse provides time-delay overcurrent protection for inductive and electronic loads in control panels. Engineers struggle with nuisance tripping and short fuses that can't handle startup surges from motors and power supplies. Its CE marking confirms regulatory compliance for European installations, while its dual-element, time-delay design reduces nuisance trips. The standard ferrule-end construction and silver-plated pins enable quick, reliable mounting in panel boards and sensor cabinets. Designed for both inductive and electronic loads, the FNA-3 helps minimize downtime and streamline procurement with a familiar Bussmann family part number. Whether upgrading existing panels or designing new equipment, the FNA-3 delivers predictable performance in a compact case.
Product Information
Extended Description
FNA-3 Eaton: Eaton Bussmann series FNA fuse, Time-delay fuse, Inductive load circuits, Electronic circuits, 3 A, Dual, Non-indicating, Ferrule end x ferrule end, 200 kAIC at 250 Vac, 10 kAIC at 125 Vac, Silver-plated pin, Standard, 250 V
Product Name
Eaton Bussmann series FNA fuse
Catalog Number
FNA-3
UPC
051712713535
Product Length/Depth
1.5 in
Product Height
0.406 in
Product Width
0.406 in
Product Weight
1.5 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
3 A
Interrupt rating
10 kAIC at 125 Vac 200 kAIC at 250 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
Bussmann series complete full line catalog no. 1007
Eaton Specification Sheet - FNA-3
FNA-3~FUSETRON DUAL-ELEMENT INDICATING
Datasheet - FNQ-30
Time-delay, dual-element design enables protection that tolerates startup surges; this reduces nuisance trips and extends line uptime. In control panels with motors, drives, and power electronics, this translates to fewer unplanned shutdowns, lower maintenance costs, and higher production velocity. Time-delay compatibility with inductive loads makes it ideal for machine controls and power supplies, supporting safer, more efficient operations. With a 3 A amperage rating and 250 V voltage rating, the FNA-3 protects small circuits while allowing normal startup currents; this balance prevents nuisance trips in relay modules and sensor boards, reducing field service calls and inventory turns in automation projects. Its interrupt ratings of 10 kAIC at 125 Vac and 200 kAIC at 250 Vac provide robust short-circuit protection for industrial feeders and automation circuits, improving panel reliability and reducing risk.
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FAQs
The FNA-3 uses ferrule-end terminations with silver-plated pins, designed for quick, reliable mounting in standard fuse holders and panel wiring schemes. Its 250 V rating and 3 A load rating align with common control-panel circuits, ensuring straightforward substitution in Bussmann-compatible housings. When replacing older devices, verify clearance and terminal torque to maintain optimal contact resistance and minimize nuisance trips during high-cycle operation.
FNA-3 employs a time-delay, dual-element design that tolerates startup surges typical of motors and other inductive loads. This approach minimizes nuisance trips while still providing fast fault interruption in abnormal conditions. In practice, this means fewer field service calls, reduced downtime, and improved uptime for conveyors, pumps, and automated feeders in production lines.
Yes. The FNA-3 is CE marked, confirming regulatory compliance for European installations. It is well-suited for control panels that require regulated protection for inductive and electronic circuits. Its Bussmann-series lineage also supports cross-reference and compatibility with existing European-sourced components, simplifying procurement and inventory management in CE-certified projects.
The FNA-3 carries a 250 V voltage rating and a 3 A amperage rating. Its interrupt ratings are 10 kAIC at 125 Vac and 200 kAIC at 250 Vac, enabling robust protection against short circuits in varying supply conditions. These specs support reliable protection for small-control circuits and mission-critical automation feeders alike.
FNA-3 is recommended for control-panel circuits that combine inductive and electronic loads, such as motor starters, relays, and power supplies. Its time-delay, dual-element design handles startup surges without nuisance trips, while its high interrupt ratings protect against faults. The fuse is ideal for European and global automation projects seeking reliable, easy-to-source protection within the Bussmann family.