Head for key selector switch, Harmony XB5, XB4, Ø22 mm 3 position spring return 421E

This head with key (key no.421E) provides a versatile interface for controlling your machines. It is easily installed and replaced on compatible complete key selector switch units. It provides a secure manner for authorized staff to switch between process or machine operating modes. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66. It makes it ideal for operation in harsh environments.