Eaton TPN-300 telecommunication fuse - 100 kAIC
Part Number: TPN-300
Quick Summary
Eaton TPN-300 telecommunication fuse provides DC overcurrent protection for telecom power paths. Tech teams often struggle with nuisance trips and difficult maintenance in harsh enclosure environments. In telecom protection, certifications like CE, SIL, and IP ratings guide safety and reliability. With a 170 Vdc rating, 300 A capacity, 100 kAIC interrupt rating, and non-indicating terminals, it delivers dependable protection while simplifying installation and service. As part of the Eaton Bussmann series, the TPN-300 integrates with standard enclosures and catalog support, helping procurement streamline sourcing and reduce downtime across network deployments.
Product Information
Extended Description
TPN-300 Eaton: Eaton Bussmann series TPN telecommunication fuse, 170 Vdc, 300 A, 100 kAIC, Non Indicating, Current-limiting, Silver-plated terminal
Product Name
Eaton Bussmann series TPN telecommunication fuse
Catalog Number
TPN-300
UPC
051712196819
Product Length/Depth
2 in
Product Height
8.6 in
Product Width
2 in
Product Weight
1.93 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
300 A
Interrupt rating
100 kAIC
Voltage rating
170 Vdc
Packaging type
Standard
Fuse indicator
Non-indicating
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - TPN-300
Feature: 170 Vdc rating with 300 A current capability. Business Impact: Provides robust DC protection for telecom rails, reducing overload risk in high-demand channels and helping maintain uptime. Application: suitable for telecom power distribution in data centers, outdoor cabinets, and central offices. Feature: 100 kAIC interrupt rating. Business Impact: enables safe interruption of high-energy faults, protecting critical power feeds and adjacent equipment. Application: backbone telecom feeders and switchgear where fault tolerance is essential. Feature: Non-indicating design with current-limiting action and silver-plated terminals. Business Impact: faster fault isolation, lower contact resistance, and easier field termination in challenging environments. Application: tight telecom enclosures and field installations requiring reliable connections. Feature: Standard packaging with catalog compatibility (Bussmann series). Business Impact: streamlines procurement, reduces lead times, and simplifies inventory management. Application: network deployments leveraging Eaton Bussmann catalog support across rack- and cabinet-based protection schemes. Feature: Compact form factor and documented dimensions. Business Impact: enables easier integration into crowded enclosures while preserving serviceability. Application: telecom racks, outdoor enclosures, and data-center DC distribution paths requiring space efficiency.
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FAQs
Install the TPN-300 in a compatible fuse holder within a standard telecom enclosure. Use the silver-plated terminals for field terminations and ensure the circuit is within the 170 Vdc, 300 A rating and is protected by the 100 kAIC interrupt rating. Refer to the Bussmann catalog guidance for mounting clearances and terminal torque best practices.
The TPN-300 is rated for 170 Vdc, 300 A continuous current, and 100 kAIC interrupt rating. These specs define the maximum operating voltage, current the fuse can carry, and the interrupt capability for fault conditions.
Yes. The device provides current-limiting DC protection suitable for telecom power rails, data-center DC distribution paths, and outdoor cabinet applications, aligning with common telecom protection requirements for reliable uptime.
The provided spec lists Compliances as Not Applicable. For formal certifications beyond this, consult Eaton’s datasheet (Eaton Specification Sheet - TPN-300) or contact Eaton technical support to confirm current regulatory markings and certifications relevant to your region.
The non-indicating design reduces visual maintenance, while the current-limiting action minimizes fault energy and protects downstream equipment, contributing to lower maintenance costs and improved network reliability over time.