Eaton FNM-25 Fuse Time-delay 25 A 10 kAIC at 250 V CE RoHS
Part Number: FNM-25
Quick Summary
Eaton Bussmann FNM-25 fuse provides reliable overcurrent protection for electrical panels and industrial equipment. Engineers often struggle with nuisance tripping during startup or limited time-delay tuning in demanding automation lines. This model is CE marked and RoHS compliant, with a 10 kAIC interrupt rating at 250 Vac, enhancing safety and regulatory alignment. In practice, its time-delay dual-element design reduces nuisance trips while supporting fast protection for motors and drives, delivering measurable uptime and cost savings. With ferrule-end connections and compact packaging, it simplifies installation in control cabinets and panelboards, aligning with industry best practices.
Product Information
Extended Description
FNM-25 Eaton: Eaton Bussmann series FNM fuse, Time-delay, 25 A, Dual, Non-indicating, Ferrule end x ferrule end, 10 kAIC at 250 Vac, Nickel-plated bronze endcap, Standard, 250 V
Product Name
Eaton Bussmann series FNM fuse
Catalog Number
FNM-25
UPC
051712522250
EAN
5027590243124
Product Length/Depth
0.39 in
Product Height
1.44 in
Product Width
0.39 in
Product Weight
0.2 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
25 A
Interrupt rating
10 kAIC at 250 Vac
Voltage rating
250 V
Material
Nickel-plated bronze endcap
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
Bussmann series Fuseology
Eaton Specification Sheet - FNM-25
FNM-25~BUSS MIDGET FUSE
Datasheet - FNQ-30
Feature: Time-delay, dual-element design enables controlled response to transient inrush currents. Business Impact: Reduces nuisance tripping and extends equipment life in startup-heavy applications. Application: Motor control centers, power distribution panels, and automation racks benefit from stable protection without compromising speed. Feature: Ferrule end x ferrule end connections. Business Impact: Fast, reliable, tool-friendly installation with consistent contact quality. Application: Standard control cabinets and panelboards where quick fuse changes are routine. Feature: Nickel-plated bronze endcaps. Business Impact: Improves durability and corrosion resistance in harsh industrial environments. Application: Environments with vibration or exposure to contaminants where robust contact is crucial. Feature: Non-indicating fuse with standard packaging. Business Impact: Lower cost options and simplified stocking while enabling easy replacement and predictable maintenance. Application: Routine protection in control circuits where external indicators are monitored separately. Feature: 25 A rating and 10 kAIC at 250 Vac. Business Impact: High fault-current protection for robust safety margins and regulatory compliance. Application: Industrial machines, drives, and panel protections requiring reliable short-circuit interruption. Feature: Superior overload and cycling capabilities. Business Impact: Prolonged life under frequent switching and load fluctuations, reducing maintenance costs. Application: Automation lines with frequent cycling and variable loads, improving uptime.
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FAQs
The FNM-25 uses ferrule-end connections and is designed for 250 V systems in electrical panels, panelboards, and motor control centers. It fits standard Bussmann series midget fuse applications and pairs with holders rated for up to 10 kAIC fault currents. For best results, use compatible ferrule-end fuse holders and follow manufacturer torque guidelines during installation.
Time-delay allows the fuse to accommodate inrush currents common with motors and transformers without nuisance tripping. The 25 A rating combined with a 10 kAIC interrupt rating provides reliable startup protection while preserving circuit continuity during normal transient events, reducing unnecessary downtime and extending equipment life in automation environments.
The FNM-25 is CE marked and RoHS compliant, signaling conformity with European safety, health, and environmental standards. These certifications help ensure regulatory alignment for global deployments, simplify procurement across multinational facilities, and support compliance documentation for audits and safety programs.
The fuse features superior overload and cycling capabilities, designed to tolerate repetitive switching without compromising protection. In practice, this translates to longer service intervals, reduced maintenance costs, and more consistent protection for automation lines that experience frequent load changes or motor startups.
With non-indicating operation, a separate monitoring scheme or panel indicators are often used to verify fuse status. Replacement is straightforward due to ferrule-end construction and standard packaging. Plan for periodic visual checks in control panels and maintain a stocked inventory of compatible FNM-25 fuses to minimize downtime during routine replacements.