Eaton BK/70A-1-1/3A Telecommunication Fuse CE Marked

Part Number: BK/70A-1-1/3A
Manufacturer
Eaton
Part number
BK/70A-1-1/3A

Quick Summary

The Eaton BK/70A-1-1/3A telecommunication fuse protects telecom circuits from overcurrent in data networks. Many teams struggle with nuisance fuse trips or slow response during surges, risking equipment damage and costly downtime. CE Marked conformance confirms European safety and performance requirements, while the 1 kAIC interrupt rating and dual voltage capability (125 Vac / 300 Vdc) support robust protection in mixed AC/DC telecom environments. Designed for compatibility with Bussmann 70 Series footprints, this fuse offers a compact form factor and predictable performance, helping procurement and maintenance teams simplify spares management and reduce total cost of ownership.

Product Information

Extended Description

BK/70A-1-1/3A Eaton: Eaton Bussmann series 70 Series telecommunication fuse, 125 Vac, 300 Vdc, 1.33 A, 1 kAIC at 300 Vdc, Non Indicating
Product Name
Eaton Bussmann series 70 Series telecommunication fuse
Catalog Number
BK/70A-1-1/3A
UPC
051712735926
EAN
5027590097314
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
1.33A
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
Feature: The BK/70A-1-1/3A carries a precise 1.33 A rating, with an interrupt capacity of 1 kAIC at 300 Vdc. Business Impact: This combination delivers fast, predictable fault clearance, protecting sensitive telecom transmitters, line cards, and multiplexers from damaging overcurrent and energy. Application: Ideal for telecom cabinets, data networks, and edge devices where surges must be isolated quickly to maintain service continuity. Feature: It supports 125 Vac and 300 Vdc operation with a response of 0 to 90 seconds at 150% of rated current. Business Impact: This dual voltage capability supports both AC and DC paths in modern telecom power architectures, reducing the need for specialized parts. Application: Power rails in switchgear, telecommunication enclosures, and data-center edge equipment. Feature: Non-indicating construction in a Standard packaging with a compact footprint (1.63 in L, 0.42 in W, 2.5 in H) and a 0.5 lb weight. Business Impact: Simplifies stock management and installation in tight cabinets, lowers handling risk during replacement, and minimizes cabinet footprint. Application: Retrofit projects and new builds where space and maintenance cycles are critical. Feature: CE Marked compliance and compatibility with Bussmann 70 Series footprints. Business Impact: Streamlines regulatory clearance in EU markets and ensures a consistent spare-parts strategy across facilities. Application: European data centers, telecom hubs, and field deployments that rely on standard Bussmann family fuses. Feature: General reliability and straightforward maintenance profile, with standard packaging and long-term availability. Business Impact: Reduces downtime and inventory complexity for protective devices, enabling faster repairs and predictable total cost of ownership. Application: Service teams conducting routine upgrades or emergency replacements in telecom and data networks.

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FAQs

Yes. BK/70A-1-1/3A is designed to fit Bussmann 70 Series footprints, ensuring straightforward swaps in existing cabinets and enclosures. Verify that the holder is a compatible 70 Series design and follow manufacturer mounting guidelines to maintain proper clearance and cooling in telecom racks.
Key specs include a 1.33 A amperage rating, 1 kAIC interrupt rating at 300 Vdc, and voltage ratings of 125 Vac / 300 Vdc. The response time is 0 to 90 seconds at 150% of rated current, with a non-indicating indicator and standard packaging suitable for Bussmann 70 Series assemblies.
Yes. With a voltage rating of 125 Vac and 300 Vdc and a 1 kAIC interrupt rating at 300 Vdc, the BK/70A-1-1/3A is suitable for mixed AC and DC telecom power paths, enabling robust protection across diverse power architectures found in data networks and telecom cabinets.
The fuse carries CE Marked compliance, indicating conformity with European safety and performance standards. No other certifications are listed in the provided data, so confirm with the supplier for any regional or sector-specific requirements beyond CE.
The non-indicating design reduces indicator-related maintenance, while the compact Bussmann 70 Series footprint simplifies spares inventory and replacements. The 1 kAIC interrupt capability helps limit equipment damage from faults, contributing to lower downtime and a favorable total cost of ownership in telecom and data network deployments.