Eaton BK/70C-3A Telecommunication Fuse - 1 kAIC at 300 Vdc
Part Number: BK/70C-3A
Quick Summary
The Eaton BK/70C-3A Telecommunication fuse protects telecom circuits by interrupting fault currents in 125 Vac / 300 Vdc systems. Engineers often grapple with nuisance trips and the downtime required for fuse replacements in dense network environments. This device carries CE Marked certification, aligning with European safety requirements, and its 1 kAIC interrupt rating provides robust fault protection in demanding telecom applications. Its compact, non-indicating design simplifies integration into existing equipment racks, while standard packaging and compatibility with Bussmann 70 Series parts support fast maintenance and scalable deployments. With a 3 A rating, it also meets common line-protection needs for data centers and telecom cabinets, enabling cost-effective stocking and reduced spare parts inventory.
Product Information
Extended Description
BK/70C-3A Eaton: Eaton Bussmann series 70 Series telecommunication fuse, 125 Vac, 300 Vdc, 3 A, 1 kAIC at 300 Vdc, Non Indicating
Product Name
Eaton Bussmann series 70 Series telecommunication fuse
Catalog Number
BK/70C-3A
UPC
051712735940
EAN
5027590097345
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
3 A
Interrupt rating
1 kAIC at 300 Vdc
Response time
0 to 90 sec at 150%
Voltage rating
125 Vac, 300 Vdc
Packaging type
Standard
Fuse indicator
Non-indicating
BK/70C-3A~BK-70C-3A~ATandT COLUMBUS
BK/70C-3A~BK-70C-3A~ATandT COLUMBUS
Bussmann series Fuseology
Eaton Specification Sheet - BK/70C-3A
Feature: 3 A amperage rating offers targeted protection for telecom circuits without unnecessary power interruption. Business Impact: minimizes false trips and downtime while safeguarding critical equipment, reducing maintenance costs and enhancing available uptime. Application: suitable for telecom racks, network cabinets, and cabinet feeders where stable protection is required. Feature: 125 Vac / 300 Vdc voltage rating aligns with mixed AC and DC telecom power architectures. Business Impact: supports versatility across equipment and backplanes, enabling a single fuse type to cover multiple power rails. Application: data centers, telecom rooms, and mass deployment environments. Feature: 1 kAIC at 300 Vdc interrupt rating delivers robust fault current interruption. Business Impact: enhances protection against high-energy faults, improving safety margins and aiding compliance. Application: protection of powerful telecom line circuits and UPS interfaces. Feature: 0 to 90 seconds response time at 150% overcurrent provides controlled clearing behavior. Business Impact: balances protection with selective disconnection to avoid unnecessary outages. Application: slow-blow telecom protection in systems with transient fault profiles. Feature: Non-indicating design reduces field maintenance and simplifies installation. Business Impact: lowers service labor and monitoring requirements while preserving clear fault indications in centralized systems. Application: installations where status is managed through system-level diagnostics. Feature: Standard packaging and compatibility with Bussmann 70 Series devices. Business Impact: enables fast stock replenishment and seamless retrofits. Application: retrofit projects and new builds across telecom cabinets and enclosures. Feature: CE Marked compliance signals regulatory alignment for European deployments. Business Impact: expedites approvals and market readiness. Application: international telecom deployments and mixed-origin equipment ecosystems.
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FAQs
BK/70C-3A is designed for standard telecom fuse holders and Bussmann 70 Series compatible bases. It supports 125 Vac and 300 Vdc circuits with a 3 A rating. The non-indicating design simplifies field installation, while the compact dimensions (1.63 in x 2.5 in x 0.42 in) fit in tight telecom cabinets and enclosures.
The BK/70C-3A has a 1 kAIC interrupt rating at 300 Vdc. This rating defines the fuse's ability to safely interrupt fault currents without damage, improving protection for telecom equipment, preventing collateral damage, and supporting compliance with electrical protection standards in data centers and network environments.
Yes, the BK/70C-3A is CE marked, indicating compliance with European safety standards. This makes it suitable for European installations and other markets that recognize CE conformity, facilitating streamlined approvals in telecom cabinets, racks, and data centers.
The BK/70C-3A responds in approximately 0 to 90 seconds at 150% overcurrent. This controlled clearing helps protect telecom circuits from sustained faults while avoiding unnecessary outages due to transient disturbances, aligning with typical protection schemes in network equipment and telecom racks.
The fuse measures 1.63 in in length, 2.5 in in height, and 0.42 in in width, with a weight of about 0.5 lb. Packaged in standard packaging for easy stocking, it fits conventional fuse holders and allows straightforward retrofit or new installs in telecom cabinets, reducing install time and inventory complexity.