French safety specialist SERV Trayvou has launched in India the PERTK, a rotary lock for electro-mechanical applications. The PERTK is designed to isolate the electrical supply of high-inertia machines, such as mixers and crushers or robotic assembly lines.  The device’s safety contacts allow the condition of the control circuit to be determined by a separate value, for example zero speed, pressure or temperature.

The lock works according to the trapped-key principle.  When it receives an authorisation signal, an LED lights up to let the operator know that it is now safe to access the dangerous area.

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