Functionality, efficiency, and the precision and reliability of the products: Since 1979, the PTR name has stood for excellent, innovative solutions. Our success is the result of a consistent strategy: We combine quality and reliability with the aim of providing our customers with the optional solutions for their needs. This is why we continued to expand our wide range of products – and in this way we have acquired important market shares worldwide in the electromechanical components sectors. Our merger with the Swiss firm of Phoenix Mecano in 1989 strengthened our worldwide presence. As a result, PTR terminal blocks and multi-connectors, test probes and DIN rail terminal blocks are now available in more than 50 countries. In addition, we set standards by using German engineering, high-quality materials, flexible production processes and intelligent logistics.As of 1st Janary 2018, PTR Messtechnik GmbH has take over the business activities for the products of the HARTU brand from Phoenix Mecano Power Quality GmbH & Co. KG.The HARTU business consists of chokes, transformers, originally produced by the company Götz Udo Hartmann. As an external reflection of this significant acquisition, PTR Messtechnik GmbH was renamed to PTR HARTMANN GmbH.