Junction boxes: The COMBI® MAR Series With a special design and highest plastic quality, which is UV and ozone resistant, it has been complying with the most demanding contractors requirements for years: The COMBI® MAR junction box series has been developed for special and challenging areas as required for installations in the railway industry

 The high quality material of the COMBI junction boxes is UV and ozone resistant, easy to close and certified to EN 455545.