Heavy duty connectors are specifically designed for use in especially tough environment conditions. The main areas of use are the automotive industry, in packaging machinery and equipment, as well as for instrumentation, control and automation equipment. They permit simple and time-saving installation of machinery and equipment. Their housings protect against mechanical impact and prevent entry of spray water and dust. The system‘s sub-assemblies can undergo a quality check in house, which simplifies installation and commissioning at their end use location.