Eaton TPN-225 Telecommunication fuse - 100 kAIC
Part Number: TPN-225
Quick Summary
The Eaton TPN-225 telecommunication fuse protects critical telecom circuits by delivering reliable current-limiting protection. It helps prevent fault currents from triggering cascading outages and expensive equipment damage in dense switchgear environments. Although the data notes Not Applicable for warranty or compliances, this design supports high-energy interruption with a 100 kAIC rating and a 170 Vdc operating voltage. With a compact 2 in × 2 in footprint and a non-indicating terminal design, installers gain faster field replacement and reduced maintenance overhead. This makes the TPN-225 a practical choice for telecom equipment racks, data centers, or protected power shelves where reliability and uptime are paramount.
Product Information
Extended Description
TPN-225 Eaton: Eaton Bussmann series TPN telecommunication fuse, 170 Vdc, 225 A, 100 kAIC, Non Indicating, Current-limiting, Silver-plated terminal
Product Name
Eaton Bussmann series TPN telecommunication fuse
Catalog Number
TPN-225
UPC
051712196765
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
225 A
Interrupt rating
100 kAIC
Voltage rating
170 Vdc
Packaging type
Standard
Fuse indicator
Non-indicating
TPN-225~TELPOWER FUSE
TPN-225~TELPOWER FUSE
Bussmann series Fuseology
Eaton Specification Sheet - TPN-225
The 225 A amperage rating delivers robust fault-current handling for telecom power paths, reducing the likelihood of nuisance trips and enabling predictable equipment protection. Business impact: minimized downtime and lower maintenance costs in data centers and telecom switching gear; Application: telecom power distribution units and switchgear backplanes. The 170 Vdc voltage rating supports DC telecom service environments, delivering safe operation across common telecom power rails; Application: DC power supplies in telecom racks, UPS-fed cabinets. The 100 kAIC interrupt rating enables rapid extinction of high-energy faults, limiting arc energy and protecting adjacent components; Application: high-energy telecom environments with dense circuit protection. The non-indicating fuse and silver-plated terminals offer reliable connectivity with corrosion resistance, simplifying installation and future servicing; Application: field replacements and low-rework diagnostic cycles. The product’s standard packaging and 2 in × 2 in footprint ensure easy mounting in common enclosures; Business impact: faster deployment and compatibility across Eaton Bussmann series accessories. The current-limiting technology delivers measurable efficiency gains by reducing fault duration and associated wear on power systems; Application: telecom line cards, protected power shelves, and modular racks. In practice, these attributes translate to improved uptime, simplified compliance through documented performance, and reduced total-cost-of-ownership over the equipment lifecycle.
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FAQs
Install the TPN-225 in the standard Bussmann-series fuse holders compatible with telecom protection panels. Ensure the device is seated in a supported enclosure with the correct bus bar connections, and torque terminals per Eaton’s mounting guidelines. The non-indicating design simplifies replacement without relying on visual status indicators, reducing downtime during field service.
The fuse has a 225 A amperage rating, 170 Vdc voltage rating, and a 100 kAIC interrupt rating. These values define the device’s protection envelope for DC telecom circuits and high-energy fault conditions typical in telecom power paths.
Yes, the TPN-225 is designed for DC telecom environments, with a 170 Vdc rating. It is best used in telecom power shelves, data-center protection cabinets, and switchgear where reliable current-limiting protection is required to minimize downtime and protect sensitive equipment.
The provided data notes Not Applicable for Compliances and Warranty. For official certifications such as CE, UL, or IEC, refer to Eaton’s datasheets and regional documentation. Always verify certification status with Eaton for your jurisdiction and application requirements.
The current-limiting, non-indicating design reduces diagnostic time and field maintenance, while its fast-acting interruption minimizes fault energy and downtime. In telecom rack applications, this can translate to lower maintenance costs, higher uptime, and a simpler procurement path due to compatibility with Bussmann-series components.