Eaton FNA-20 Fuse - Time-Delay, 1 kAIC at 32V (CE)
Part Number: FNA-20
Quick Summary
The Eaton FNA-20 fuse is a time-delay protection device designed for inductive and electronic circuits in industrial control panels. Engineers often struggle with nuisance trips from inrush currents during motor starts, which can disrupt production schedules. The FNA-20’s dual-element design provides reliable overload protection while accommodating brief overloads without nuisance trips. It carries CE marking for EU safety compliance, supporting audit-ready installations in global environments. For panel builders and service teams, the ferrule-end connections simplify wiring in tight spaces, while the compact form factor (0.81 in depth, 0.4 in width, 1.52 in height) helps fit crowded control enclosures. This model offers predictable cycling and long-term reliability in 20 A circuits at 32 V.
Product Information
Extended Description
FNA-20 Eaton: Eaton Bussmann series FNA fuse, Time-delay fuse, Inductive load circuits, Electronic circuits, 20 A, Dual, Non-indicating, Ferrule end x ferrule end, 1 kAIC at 32 Vac, Silver-plated pin, Standard, 32 V
Product Name
Eaton Bussmann series FNA fuse
Catalog Number
FNA-20
UPC
051712713672
EAN
5027590425926
Product Length/Depth
0.81 in
Product Height
1.52 in
Product Width
0.4 in
Product Weight
0.3 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
20 A
Interrupt rating
1 kAIC at 32 Vac
Voltage rating
32 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-20
FNA-20~FUSETRON DUAL-ELEMENT INDICATING
Datasheet - FNQ-30
Feature Time-delay operation is built into the FNA-20, thanks to its dual-element design. Business impact: this allows momentary overloads common to motor starts to ride through without tripping, preserving production flow and minimizing process interruptions. Application: suitable for inductive loads such as conveyors, pumps, and relay-driven circuits found in automated lines. Feature 20 A amperage rating, 32 V voltage rating, and 1 kAIC interrupt rating at 32 Vac provide robust protection for low-voltage control circuits. Business impact: fast, reliable fault interruption limits damage to contactors and controllers while avoiding cascading outages. Application: ideal for control panels and machine starters that demand precise, predictable protection in tight enclosures. Feature Ferrule end x ferrule end connections simplify field wiring and ensure secure terminations in dense panels. Business impact: reduces installation time and wiring errors, improving overall panel build efficiency. Application: control cabinets, machine interfaces, and industrial enclosures where space is at a premium. Feature Non-indicating fuse with silver-plated pins and dual elements for reliable cycling. Business impact: consistent performance in repetitive start/stop cycles extends fuse life and reduces maintenance. Application: high-cycle automation equipment and electronic circuits that require dependable overload protection. Feature CE Marked compliance supports global safety standards and streamlined audits. Business impact: enables multi-region deployments with fewer regulatory questions. Application: OEMs provisioning worldwide equipment and service teams integrating Eaton Bussmann series devices.
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FAQs
The FNA-20 uses ferrule-end terminations, so select a compatible fuse holder or panel socket designed for ferrule connections. Ensure proper insertion without bending the pins, then secure wiring to the ferrule ends. Verify overall enclosure depth and width (0.81 in depth, 0.4 in width) to maintain clearance and cooling in dense panels.
The device is rated for 20 A at 32 V, with a 1 kAIC interrupt rating at 32 Vac. It employs a dual-element time-delay design to tolerate short overloads, reducing nuisance trips in inductive loads such as motors and relays while providing reliable protection for low-voltage control circuits.
Yes. Designed as a time-delay fuse, the FNA-20 handles inductive loads well, allowing brief inrush during motor starts without tripping. This helps maintain production continuity in conveyors, pumps, and relay-driven control circuits while preserving downstream device integrity.
The FNA-20 carries CE Marking, indicating compliance with applicable EU safety standards. No additional certifications are listed in the provided data, so verify regional requirements for UL, IP, or SIL equivalents if your project mandates them.
The fuse measures 0.81 inches deep, 0.4 inches wide, and 1.52 inches high, with a 0.3 lb weight. It uses ferrule-end terminations and is compatible with Bussmann/ET Bussmann series fuse holders. When retrofitting, ensure panel space and mounting provisions accommodate these dimensions for reliable installation.