Rotation prevention device for electric drive shaft for moved contact of switchgear

摘要

The device comprises a blocking part (53) connected concisely with the shaft, which is led axially gliding in a cylindrical drill hole (21) of a fixture (19). The drill hole (21) is equipped with an electromagnetic activated blocking bolt (33), whereby a final switch (16) activated by the introduced locking part switches the circuit (18) for the power supply of the drive.