Eaton FNM-6-1/4 Fuse - Time-delay, 250V CE RoHS
Part Number: FNM-6-1/4
Quick Summary
The Eaton Bussmann FNM-6-1/4 fuse is a time-delay device designed to protect small control circuits and panel-mounted equipment. It helps engineers prevent nuisance trips caused by inrush and startup surges while preserving circuit integrity. This dual-element fuse features CE marking and RoHS compliance, with a 250 V rating and high interrupt capabilities (10 kAIC at 125 Vac and 200 AIC at 250 Vac). Its ferrule-end connections and nickel-plated bronze endcaps simplify installation in compact enclosures and ease field replacement. By combining reliable protection with a compact form and standardized packaging, it supports faster assemblies, reduced downtime, and compliant procurement across industrial automation, machinery, and control-panel applications.
Product Information
Extended Description
FNM-6-1/4 Eaton: Eaton Bussmann series FNM fuse, Time-delay, 6.25 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-6-1/4
UPC
051712520645
EAN
5027590060295
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
6.25A
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
Non-indicating
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - FNM-6-1/4
FNM-6-1/4~FNM-6-1-4~BUSS MIDGET FUSE
Time-delay protection reduces nuisance tripping during motor starts and surge events, delivering measurable uptime improvements and safer equipment operation in automation panels. The 6.25 A rating matches small- to medium-load circuits, avoiding overspecification while maintaining robust fault isolation and predictable performance in demanding environments. The dual-element design provides balanced protection against overcurrent and short-circuit conditions, lowering maintenance costs by extending fuse life and reducing replacement frequency. Ferrule-end connections enable quick, reliable wiring and simplify ladder-diagram wiring or panel wiring practices, which translates into faster commissioning and easier field service. Nickel-plated bronze endcaps resist wear and corrosion, improving long-term reliability in harsh industrial settings. Compliance with CE and RoHS ensures regulatory alignment and reduces risk in supplier audits and procurement reviews. The compact 0.39 in x 1.44 in footprint fits narrow panel spaces, while a standard packaging approach streamlines stocking and cross-compatibility with Bussmann series fuses. This device also supports easy sourcing as part of Eaton’s Bussmann family, ensuring consistent performance across related protection products for motor, control, and instrumentation circuits.
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FAQs
The FNM-6-1/4 uses ferrule-end x ferrule-end connections, which simplifies panel wiring and field replacement. Ensure a clean, properly crimped ferrule connection, secure endcaps, and correct alignment within the enclosure. The compact 0.39 in depth helps when space is limited, and using the nickel-plated bronze endcaps enhances durability in harsh environments.
Key specs include 6.25 A amperage rating, 250 V voltage rating, and interrupt ratings of 10 kAIC at 125 Vac and 200 AIC at 250 Vac. It is a time-delay (slow-blow) dual-element fuse designed to tolerate brief inrush currents without sacrificing protection during faults. These characteristics support reliable operation in motor and actuator circuits.
Yes. Its time-delay design, modest current rating, and ferrule-end wiring make it well-suited for control panels, instrumentation, and small drives. The compact form factor fits tight electrical enclosures, while the combination of CE and RoHS compliance aligns with common industrial standards and sourcing requirements.
The fuse is CE marked and RoHS compliant, signaling conformity with European regulatory and environmental requirements. While not specified for UL or IP ratings in the data provided, CE RoHS compliance supports regulatory procurement and reduces compliance risk in regional markets.
Benefits include reduced nuisance trips due to inrush with time-delay protection, longer fuse life from dual-element design, and quicker field replacements thanks to ferrule-end wiring. These factors translate to lower downtime, predictable maintenance costs, and improved overall equipment reliability in production lines and control systems.