Emergency Stop Buttons With Keys Are Energy Isolation Devices

Emergency stop buttons with keys are energy isolation devices

The emergency stop button with the key or the knob switch with the key, including the emergency stop button, knob switch, start button and other electrical control circuit components, can not really play the role of "physically blocking the transmission or release of dangerous energy", so they are not energy isolation devices. Although the emergency stop button with the key and the knob switch with the key can play a certain role in preventing the accidental start of the equipment after shutting down the equipment and pulling out the key, there is still the risk of "uncontrolled dangerous energy due to the improper action of the electrical main circuit components".