Eaton FNM-4-1/2 Fuse - 200 AIC @ 250V CE RoHS

Part Number: FNM-4-1/2
Manufacturer
Eaton
Part number
FNM-4-1/2

Quick Summary

The Eaton FNM-4-1/2 fuse provides time-delay protection for industrial control panels. This device shields circuits while tolerating startup surges, reducing unnecessary trips and downtime. It carries CE marking and RoHS compliance, meeting essential safety and environmental standards. With a 4.5A rating at 250V and dual elements, the fuse fits standard ferrule-end connections and endures cycling in demanding equipment. Designed for Bussmann series protection in panel assemblies, it offers predictable procurement and easy installation, delivering reliable protection for electrical protection and circuit control applications.

Product Information

Extended Description

FNM-4-1/2 Eaton: Eaton Bussmann series FNM fuse, Time-delay, 4.5 A, Dual, Non-indicating, Ferrule end x ferrule end, 10 kAIC at 125 Vac, 200 AIC at 250 Vac, Nickel-plated bronze endcap, Standard, 250 V
Product Name
Eaton Bussmann series FNM fuse
Catalog Number
FNM-4-1/2
UPC
051712520454
EAN
5027590407489
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
4.5A
Interrupt rating
200 AIC at 250 Vac 10 kAIC at 125 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
Time-delay operation reduces nuisance trips during startup and cycling, improving equipment availability and reducing maintenance costs. This feature translates to smoother motor starts and less interruption in automated lines, especially in conveyors, pumps, and HVAC controls. The business impact is clearer uptime and lower service technician calls in high-cycle environments. The dual-element design enhances protection against transient faults and repetitive surges, extending fuse life and lowering replacement frequency in harsh electrical environments. Application relevance spans control panels, power distribution blocks, and equipment with intermittent inrush; it supports longer intervals between replacements while preserving system integrity. With a 4.5A, 250V rating and robust interrupt performance (10 kAIC at 125V, 200 AIC at 250V), you gain dependable protection for sensitive loads and motor drives. This translates to safer commissioning, reduced risk of cascading faults, and easier compliance checks. Ferrule-end connections and nickel-plated bronze endcaps ensure secure, corrosion-resistant terminations, simplifying installation and field servicing in DIN rail assemblies. The standard packaging and Bussmann series compatibility streamline procurement and spares planning for assemblies that require consistent, proven protectors. CE marking and RoHS compliance further reinforce regulatory alignment, supporting audits and global deployments across manufacturing floors and panel-builder projects.

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FAQs

Install the FNM-4-1/2 using standard ferrule-end connections. Ensure the circuit is de-energized before insertion, seating the fuse fully into the ferrule terminals. Verify the 250V rating matches the panel supply and confirm the dual-element design is correct for the load. After installation, inspect for secure terminations and proper cable routing to prevent strain.
The fuse provides a 4.5A amperage rating at 250V, with an interrupt rating of 200 AIC at 250V and 10 kAIC at 125V. It is a dual-element, time-delay fuse with Ferrule end x Ferrule end connections and non-indicating indicators, suitable for panel protection and control circuits.
Yes. Its time-delay (slow-blow) behavior accommodates inrush currents typical of motor starts, reducing nuisance trips. When selecting protection for motors, ensure the fuse amperage is sized to the motor full-load current and consider coordination with contactors and overload relays to avoid nuisance disconnections during startup.
The FNM-4-1/2 is CE Marked and RoHS Compliant, aligning with European safety and environmental standards. These certifications support regulatory audits and enable use in diverse global facilities without requiring additional documentation for compliance.
Because it is a time-delay, dual-element fuse designed for cycling, expect longer service life in suitable applications, but plan for routine inspection in high-cycle environments. Keep a stocked spare with the same model and rating to minimize downtime, and verify panel wiring integrity during preventive maintenance to ensure continued protection alignment.