Compact Contact Blocks for triggering operating elements are clipped into Mounting Clamp for Contact Blocks, 22mm (0.0.691.55) in a space-saving solution. Two Blocks can be installed to enable alternating switching. Contact Block, 1NC, 22mm and Contact Block, 1NO, 22mm are available to choose from. Emergency Stop Buttons, Selector Switches and Pushbuttons are available from item to initiate functions.