Pushbutton transparent cover, locking device

This is a transparent cover which blocks access to the open/close pushbuttons of Compact NS and Masterpact NT devices. It is possible to independently lock the opening button and the closing button. The pushbuttons may be locked using either a padlock (diameter from 5 to 8 mm, not supplied), lead seal or two screws. The locking device is often combined with a remote operating mechanism.