Graven Automation

iQ-R PLC Series; HART-Enabled Analog input module;8 channels (current) iQ-R PLC Series; HART-Enabled Analog input module;8 channels (current)

ABB VD4 Circuit Breaker VD4 1225-40 Serial-No. 1VBV0 7047058 /4012/07 IEC 62271-100 2007 Since high dielectric strength can be reached in the vacuum, even with minimum distances, circuit breaking is also guaranteed when the contacts separate a few milliseconds before natural current zero crossing. The special shape of the contacts, the material used, as well as the limited duration and low voltage of the arc, guarantee minimum contact wear and long life. In addition, the vacuum also prevents contact oxidation and contamination. Operating mechanism The low speed of the contacts, their reduced travel and exposed conductive part, limit the energy required for the operation and therefore guarantee extremely low wear on the system. This means that the circuit breaker only requires very little maintenance. VD4 circuit breakers have mechanical operating mechanisms with stored energy and free trip. These characteristics allow opening and closing operations to be performed independently of the operator. The operating mechanism is of a simple design, easy to use and can be customized with a wide range of accessories which are straightforward and rapidly installed. This simplicity enhances the reliability of the apparatus.

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