Eaton TPN-70 Telecommunication Fuse - 100 kAIC
Part Number: TPN-70
Quick Summary
TPN-70 telecommunication fuse protects sensitive telecom circuits and equipment. In deployments with high transient fault risk, a fast-acting, current-limiting fuse reduces downtime and equipment damage. Key specifications include a 170 Vdc rating, 70 A, and a 100 kAIC interrupt rating; verify regional certifications such as CE or IP ratings for your site. By choosing a non-indicating design with silver-plated terminals, you gain reliability and corrosion resistance, simplifying maintenance and extending service life, which supports lower total cost of ownership and steady performance in harsh telecom environments.
Product Information
Extended Description
TPN-70 Eaton: Eaton Bussmann series TPN telecommunication fuse, 170 Vdc, 70 A, 100 kAIC, Non Indicating, Current-limiting, Silver-plated terminal
Product Name
Eaton Bussmann series TPN telecommunication fuse
Catalog Number
TPN-70
UPC
051712196949
Product Length/Depth
1.2 in
Product Height
5.75 in
Product Width
1.2 in
Product Weight
0.32 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
70 A
Interrupt rating
100 kAIC
Voltage rating
170 Vdc
Packaging type
Standard
Fuse indicator
Non-indicating
TPN-70~TELPOWER FUSE
TPN-70~TELPOWER FUSE
Bussmann series Fuseology
Eaton Specification Sheet - TPN-70
Feature current-limiting action with 100 kAIC interrupt rating provides a high fault-current cutoff, reducing damage to sensitive telecom hardware and cutting downtime costs. Business impact: protects critical backplanes and line cards while enabling faster recovery after faults; Application: data centers, telecom racks, and backbone networks. Feature 170 Vdc rating paired with a 70 A capacity ensures safe operation within typical telecom power rails; Business impact: minimizes insulation stress and helps meet system-level surge requirements; Application: telecom power distribution and panel protection. Feature non-indicating design minimizes false alarms and simplifies cabinet maintenance in tight spaces; Business impact: reduces visual clutter during service and lowers maintenance time; Application: compact telecommunication enclosures. Feature silver-plated terminals enhance conductivity and corrosion resistance; Business impact: improves long-term reliability in adverse environments and reduces connection losses; Application: outdoor-rated or humid telecom installations. Feature standard packaging and form factor support quick upgrades and easy retrofits; Business impact: lowers installation effort and hardware stock needs; Application: replacing older fuse types in Bussmann series compatible panels.
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FAQs
When installing the TPN-70, ensure compatibility with standard Bussmann series holders and space within your telecom cabinet. The fuse measures about 1.2 in by 1.2 in with a 0.32 lb weight, and uses silver-plated terminals for reliable contact. Plan for adequate clearance and cooling, and verify the 170 Vdc rating aligns with your system’s voltage rails to prevent insulation stress.
Yes. The TPN-70 is designed for standard packaging and form factor used in Bussmann series protection schemes. Its non-indicating design reduces cabling complexity and visual clutter, facilitating straightforward swaps in existing protection panels and minimizing downtime during upgrades or maintenance in telecom racks.
The TPN-70 provides a 70 A amperage rating, a 170 Vdc voltage rating, and a 100 kAIC interrupt rating, with current-limiting operation. These specs enable rapid fault interruption while protecting delicate telecom equipment, backplanes, and network hardware from high-energy faults in worst-case conditions.
The TPN-70 is ideal for telecom backplanes, data centers, network equipment, and field cabinet protection. Its current-limiting behavior and high interrupt rating make it suitable for reducing fault energy in power distribution units and protection schemes across backbone networks and switching equipment.
The non-indicating design reduces maintenance checks triggered by visual indicators, while the silver-plated terminals improve long-term conductivity and corrosion resistance. Together with fast fault interruption, this configuration lowers downtime, extends mean time between failures, and lowers total cost of ownership in mission-critical telecom deployments.