This extremely robust and durable system developed by druseidt provides a loss-free current transfer to the bus-bar. With the standard version, the contactor consists of a fixed contact plate with a inflexible connection to the contact rail and a pneumatically activated moveable contact plate which is held back with a spring and requires no connection to the contact rail. The stamped contact surfaces are formed for an optimum current transfer. The pneumatic drive runs with a so-called pneumatic cushion which is built into the contact and protected from hazardous or aggressive elements. This system does not require any large pressure cylinder which depends on the application in cases. The druseidt contact has a space-saving compact form and can be utilised in very small areas. The stable frame of red brass used in combination with stainless steel components makes a very strong and durable mechanical structure. The pneumatic cushion can be obtained as a replacement part and can be easily exchanged if ever required. The contacts in the standard version have a straight E-Cu connection plate which is approximately 150 mm long. Longer or angled connection plates are also available. Another standard version with an extra insulation plate which is screwed onto the unit for mounting on metal walls is also available. At least 4 to 5 bar air pressure is required for operation. Air requirements are extremely low at approximately 0.2 litres per switching procedure. The contacts can be operated with pneumatic hand switches or can be integrated in the existing pneumatic control. Since the bus-bar has no spring resistance during insertion, these contacts are also very suitable for contacting extremely light bars.