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The miniature connectors of the binder 770 NCC series are an exemplary success – which also benefits industrial users. binder presents overmoulded cable connectors of the 770 NCC (Not Connected Closed) series. When mated, the products meet the requirements of protection degree IP67 and are thus dust-tight and protected against temporary submersion. When unplugged, they offer IP54 protection against contact, dust and splashing water from all sides. The series is mainly designed for use in industrial and healthcare environments where liquid media typically occur. The connectors are equipped with an easy-to-use but reliable bayonet locking system that ensures quick and safe mating and unmating. Background: NCC – Not Connected Closed Typically, connectors only comply with the protection degree specified in their data sheet when mated. When unplugged, covers or flaps are often used to protect them from environmental influences. However, these elements may affect ease of handling or interfere with the visual appearance of the system design. NCC is different: here, as a special design element, a spring-loaded plastic cover is located inside the connector housing. It encloses the pins in a contact-proof manner, protects them from particles, dust and splash water and protects against mechanical impact from the outside. Design meets functionality The use in medical engineering applications particularly challenges the design and manufacture of circular connectors. On the one hand, smooth product surfaces are required for hygiene reasons. They prevent the accumulation of dirt and reduce the risk of contamination. On the other hand, in clinical applications, for example, mobile devices often have to be connected to others on site – in as little time as possible and without the risk of contaminating the unmated flange part of the connection. Furthermore, medical device manufacturers demand a visually attractive design that fits seamlessly into the typical colour and shape schemes of this market segment. In addition, the connector manufacturer is faced with the task of using one and the same tool for producing the black and white versions – despite the different materials – while maintaining tight tolerances. Similar requirements apply to applications in industrial measurement and control technology, where the products have to withstand harsh process or climatic conditions. With the overmoulded cable connectors of the 770 NCC series, the developers and production specialists at binder have succeeded in meeting these challenges comprehensively. 770 NCC series specifications The 770 NCC series of 8-pin cable connectors with bayonet lock – in straight design – are equipped with moulded, UL-approved PUR or PVC cables, making field assembly unnecessary. They are offered with standard cable lengths of 2m and 5m; other lengths are available on request. The cable cross-section is 8 x 0.25mm² and the cable jacket diameter is 6.0mm. The bending radius of the cables in move is at least ten times the cable diameter – and at least five times the diameter for fixed cables. The maximum resistance of wire amounts to 79O/km. The overmoulded cable connectors are designed for a rated voltage of 175V at a rated current of 2A and withstand impulse voltages of up to 1,750V. Their operating temperature range extends from -25°C to +85°C; the mechanical service life is specified at 5,000 or more mating cycles.
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