Eaton 70F-1/4A Telecommunication Fuse - 1 kAIC @300 Vdc
Part Number: 70F-1/4A
Quick Summary
The Eaton 70F-1/4A telecommunication fuse protects sensitive telecom circuits with a compact, ferrule-ended design. In telecom cabinets and backplanes, reliable overcurrent protection is critical to prevent outages and equipment damage. This 0.25 A fuse operates at 125 Vac and 300 Vdc, delivering a 1 kAIC interrupt rating at the higher voltage, with a violet color code for quick identification. The device is non-indicating, simplifying field maintenance and reducing false diagnostics. Compliant with CE marking requirements, it aligns with European standards for safety and reliability. For system integrators and procurement teams, this fuse pairs well with standard ferrule terminations and Bussmann 70 Series components to streamline stocking, repair, and preventive maintenance.
Product Information
Extended Description
70F-1/4A Eaton: Eaton Bussmann series 70 Series telecommunication fuse, Color code violet, 125 Vac, 300 Vdc, 0.25 A, 1 kAIC at 300 Vdc, Non Indicating, Ferrule end X ferrule end
Product Name
Eaton Bussmann series 70 Series telecommunication fuse
Catalog Number
70F-1/4A
UPC
051712736121
Product Length/Depth
1.63 in
Product Height
2.5 in
Product Width
0.42 in
Product Weight
0.5 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
0.25 A
Interrupt rating
1 kAIC at 300 Vdc
Voltage rating
125 Vac, 300 Vdc
Packaging type
Standard
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
Special features
Color code violet
70F-1/4A~70F-1-4A~TELEPHONE FUSE
70F-1/4A~70F-1-4A~TELEPHONE FUSE
Bussmann series Fuseology
Eaton Specification Sheet - 70F-1/4A
Bussmann series Telpower indicating fuse and holder 70 series data sheet no. 5007
Feature → Business Impact → Application: The 70F-1/4A uses ferrule-end terminations for secure, repeatable wire connections, reducing installation time and field rework in telecom enclosures. Benefit: faster commissioning and fewer contact issues, improving overall panel reliability for control and data paths in data centers and central offices. Application: preferred in backplanes and trunk lines where compact form factor saves cabinet space while preserving protection integrity. Feature → Business Impact → Application: With a 0.25 A rating and 1 kAIC at 300 Vdc, the fuse delivers precise overcurrent protection against fault currents without nuisance trips, lowering maintenance costs and downtime. Application: critical protection for sensitive telecom circuits and power rails in customer premises equipment. Feature → Business Impact → Application: Color code violet enables rapid circuit identification, simplifying inventory management and troubleshooting in multi-channel telecom racks. Application: inventory control and rapid fault isolation during service windows. Feature → Business Impact → Application: Non-indicating design reduces visual wear and eliminates false positives from indicators, cutting unnecessary replacements and sensor checks. Application: streamlined maintenance workflows. Feature → Business Impact → Application: CE Marked compliance ensures alignment with global safety expectations, aiding procurement in international projects and reducing verification steps for installers. Application: multinational deployments and standardization across sites. Feature → Business Impact → Application: Compatibility with Bussmann series 70 isolates supports seamless integration with existing telecommunication protection schemes and standard ferrule wiring practices. Application: scalable protection strategy across legacy and new builds.
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FAQs
For reliable installation, ensure ferrule-end terminations are properly crimped to the conductors and that wire sizes match the fuse’s maximum current rating. Maintain adequate clearance for heat dissipation in dense telecom enclosures and avoid stacking fuses in direct contact with mounting hardware. Use the color violet coding to track protected circuits and align with existing protection schemes.
Yes, the 70F-1/4A is CE Marked, indicating conformity with European safety and electrical standards. This alignment supports regulatory approval for European deployments and simplifies vendor qualification. While other certifications are not specified in the data, CE Marked compliance is a clear baseline for safe, certified operation in most telecom environments.
Key ratings include an amperage of 0.25 A, voltage ratings of 125 Vac and 300 Vdc, and an interrupt rating of 1 kAIC at 300 Vdc. These specifications enable precise protection for low current telecom circuits while tolerating higher dc fault levels, minimizing the risk of arc faults and equipment damage in telecom power rails.
Yes, the fuse is designed with ferrule end x ferrule end connections, making it compatible with standard ferrule-wired telecom wiring. This simplifies field termination, reduces soldering or crimping errors, and aligns with common Bussmann 70 Series installation practices for quick, reliable replacements.
The 70F-1/4A offers predictable protection with a compact form factor, reducing cabinet space and wiring complexity. Its non-indicating design lowers potential false diagnostics, while CE compliance and 1 kAIC rating support longer service intervals and faster fault isolation. Overall, maintenance costs decline due to improved reliability and standardized parts across sites.