Eaton TPN-40 Telecommunication Fuse - 100 kAIC for telecom networks

The 170 Vdc rating and 40 A current rating provide robust protection for DC telecom networks, helping prevent equipment damage and downtime while allowing for precise protection coordination in power paths. This translates to fewer nuisance trips during grid disturbances and improved service continuity for critical telecom gear, data centers, and network cabinets. The 100 kAIC interrupt rating means rapid fault clearance under high fault currents, reducing arc energy and downstream damage—essential for central offices and data-center protection schemes where fault currents can be substantial. Current-limiting behavior minimizes energy transfer to protected circuits, preserving components and reducing follow-on thermal stress in sensitive equipment such as line cards and power distribution units. The non-indicating design paired with ferrule-end x ferrule-end connections streamlines installations, minimizes wiring errors, and supports fast maintenance cycles in fielded networks. Silver-plated terminals deliver enhanced conductivity and corrosion resistance, extending contact life in challenging environments and improving long-term reliability in telecom enclosures. With a compact profile (0.76 in width/depth, 3 in height) and standard packaging, the TPN-40 integrates easily into dense rack or panel layouts, enabling scalable protection without sacrificing available space. Compatibility with Eaton Bussmann series components simplifies sourcing, stocking, and maintenance across mixed protection schemes, reducing total cost of ownership. While some regions require specific certifications, engineers can design around existing regional requirements using this product’s proven protection characteristics, wiring practices, and documented performance metrics.