Eaton TPN-45 Telecommunication Fuse - 100 kAIC
Part Number: TPN-45
Quick Summary
The Eaton TPN-45 telecommunication fuse provides reliable overcurrent protection for DC telecom power rails. In tight rack enclosures, engineers often wrestle with protecting sensitive electronics without sacrificing space or response time. With a 170 Vdc rating and a 100 kAIC interrupt rating, the TPN-45 helps minimize fault energy and downtime. Its ferrule-end construction and current-limiting behavior support fast protection in data centers and telecom cabinets, while the compact footprint eases installation in crowded power zones. This combination delivers predictable protection and supports ongoing maintenance in mission-critical telecom applications.
Product Information
Extended Description
TPN-45 Eaton: Eaton Bussmann series TPN telecommunication fuse, 170 Vdc, 45 A, 100 kAIC, Non Indicating, Current-limiting, Ferrule end X ferrule end, Silver-plated terminal
Product Name
Eaton Bussmann series TPN telecommunication fuse
Catalog Number
TPN-45
UPC
051712196864
Product Length/Depth
0.76 in
Product Height
3 in
Product Width
0.76 in
Product Weight
0.12 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
45 A
Interrupt rating
100 kAIC
Voltage rating
170 Vdc
Packaging type
Standard
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating
TPN-45~TELPOWER FUSE
TPN-45~TELPOWER FUSE
Bussmann series Fuseology
Eaton Specification Sheet - TPN-45
High interrupt rating paired with current-limiting action minimizes fault energy, protecting downstream components and shortening outage durations in telecom power rails. This translates to measurable uptime gains for data centers and service providers. The 170 Vdc rating ensures compatibility with DC telecom systems, enabling safe, reliable operation across telecom power distribution. Ferrule-end x ferrule-end construction provides quick, repeatable terminations with standard crimp tooling, reducing installation time and the risk of loose connections. Silver-plated terminals improve conductivity and resistance to corrosion, extending service life in challenging environments. The compact, non-indicating package frees valuable rack space and simplifies routine maintenance, while standard packaging supports streamlined stocking and field replacement.
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FAQs
The TPN-45 protects DC telecom power rails and related equipment such as telecom power distribution panels, data-center DC bus circuits, and other telecommunication rack applications. With a 45 A rating and 170 Vdc operating voltage, it guards sensitive electronics against overcurrent events while minimizing collateral damage.
The TPN-45 uses ferrule end terminations designed for quick, reliable crimp connections. Use a compatible crimping tool and ferrule barrels to secure the conductors, ensuring proper seating and minimal resistance. The non-indicating design reduces nuisance signaling during installation while maintaining a solid electrical connection.
Yes. The TPN-45 combines a compact footprint with a robust 100 kAIC interrupt rating, making it well-suited for crowded telecom cabinets and DC distribution racks where space is at a premium and reliability is critical.
Key specs include a 45 A amperage rating, 170 Vdc voltage rating, 100 kAIC interrupt rating, ferrule-end connections, non-indicating status, and current-limiting protection. These features support fast fault clearance while protecting downstream equipment in telecom and data-center power systems.
Datasheets and catalogs are available through Eaton’s resources: the TPN-45 specification sheet, full-line catalog PDFs, and a Bussmann Fuseology multimedia presentation. Access the Eaton specification sheet (TPN-45.pdf) and the full-line catalog linked in the product downloads for design-in and maintenance references.