We are pleased to announce that all Siemon solid shielded category 6A and 7A cables sold worldwide are qualified for mechanical reliability in high temperature environments up to 75° C.

• This is one of the many benefits of Siemon shielded cabling – learn more in the Shielded Copper Cabling Learning Center.

This higher temperature rating is especially critical for support of the IEEE 802.3 PoE Plus (Type 2) application that exhibit a temperature rise within bundled cable configurations. For cabling infrastructure expected to support power delivery to data terminal equipment, the practice recommended by industry standards is to not install 60° C rated cables in environments above 50° C.  Siemon shielded category 6A and 7A cables may be installed in environments up to the maximum 60° C specified by TIA and ISO/IEC standards and will not experience mechanical degradation caused by heat build-up inside the cable bundle due to PoE remote power delivery.

For more information on making PoE Plus-ready cabling choices to support reduced current-induced temperature rise and minimize the risk of degraded physical and electrical performance due to elevated temperature, see the white paper “IEEE 802.3at PoE Plus Operating Efficiency: How to Keep a Hot Application Running Cool.”

Furthermore, TIA and ISO/IEC cabling standards require overall channel length to be reduced from 100 meters (i.e. “length de-rating”) to offset additional insertion loss resulting from installation in environments having an ambient temperature greater than 20°C.  Siemon’s shielded category 6A cables require less than half the length de-rating of category 6A UTP cables and Siemon’s fully-shielded category 7A cables do not require any length de-rating to support 10GBASE-T and lower speed applications in environments up to 60° C.

The associated part numbers are listed below by region. Any cables manufactured after June 15th will now include the marking ‘75C’ on the jacket legend:

Learn more about on Siemon shielded cable in the Siemon e-catalog.