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For Immediate Release

Siemon Jacks Crowned King of PoE


January 26, 2016. Watertown, CT - Siemon, a leading global network infrastructure specialist, is pleased to announce that its patented Z-MAX® and MAX® RJ-45 jacks and TERA® jacks deliver the industry's most reliable jack-plug connection for superior support of the latest PoE applications.

In an effort to improve the electrical and mechanical performance of traditional modular jacks, Siemon invented and patented a curved or "crowned" contact shape for its modular jacks. In additional to achieving the industry's highest transmission performance and eliminating the risk of permanent contact deformation due to mechanical stress, Siemon's crowned jack contacts provide superior support for remote powering applications.

Unmating a jack-plug connection under a PoE load produces an arc that erodes the gold plated jack-plug contact surfaces at the arcing location. When this erosion occurs in the area of the fully mated position, the result is an unreliable connection that can cause degraded network performance and bit error rates. While some manufacturers have succeeded in ensuring that erosion on jack contacts is separate from the fully mated position, their contact geometry does not ensure the same for plug. Erosion on either the jack or plug contacts results in an unreliable connection.

"Only Siemon's patented crowned contact geometry places arcing damage to the both the plug and jack contacts away from the fully mated position," explains John Siemon, vice president of global operations and chief technology officer for Siemon. "This allows our customers to connect and disconnect to the latest PoE applications with zero risk over the lifetime of the system -it's what makes our jacks King of PoE."

Every day, the Internet of Things (IoT) places more PoE-enabled devices on the network, from IP phones and surveillance cameras, to wireless access points, building automation devices and LED lighting. With PoE standards in development that will enable even higher power delivery over all four pairs of a network cable, the ability of Siemon Z-MAX, MAX and TERA jacks to maintain reliable, stable connections throughout the life of the system is more important than ever.

Siemon's jacks have been third-party tested and certified to be in full compliance with IEC-60512-99-001 standards that specify the maximum allowable resistance change that mated connections can exhibit when subjected to insertion and removal cycles under PoE load. For superior end-to-end PoE-enabled systems, Siemon jacks are ideal for use with Siemon's Category 6A and 7A shielded cables that are qualified for mechanical reliability up to 75°C (167°F) to ensure superior heat dissipation in remote powering applications.

To learn more about Siemon's superior support for PoE via crowned jack contact geometry and to access the third-party test report, visit


About Siemon
Established in 1903, Siemon is an industry leader specializing in the design and manufacture of high quality, high performance IT infrastructure solutions and services for Data Centers, LANs and Intelligent Buildings. Headquartered in Connecticut, USA, with global sales, technical and logistics expertise spanning 100 countries, Siemon offers the most comprehensive suites of copper and optical fiber cabling systems, cabinets, racks, cable management, data center power and cooling systems and Intelligent Infrastructure Management solutions. With more than 400 patents specific to structured cabling, Siemon Labs invests heavily in R&D and the development of Industry Standards, underlining the company's long-standing commitment to its customers and the industry. Through an ongoing commitment to waste and energy reduction, Siemon's environmental sustainability benchmarks are unparalleled in the industry, including 179% global carbon negativity and zero-landfill status
Siemon Interconnect Solutions (SIS) is a Siemon business unit comprised of a team of dedicated technical sales professionals supported by Siemon Labs, mechanical, electrical and signal integrity engineers committed to solving industry and customer driven interconnect challenges. We provide custom network infrastructure solutions to: OEM's, Leading Manufacturers, Value-Added Resellers and System Integrators.
Press Contact:
Betsy Conroy
(860) 945-4200