The operating handle of plug can be installedon the top or side with accurate opening or closing indication.The padlock mechanismis set for protecting the plug from mal-operation and any unauthorized access.Busbar plug-in box outlet coversprevent unintentional contact of the busbar.Plug in units areautomatically grounded on installation. Polarized engagement of the plug to thebusway provides the installer withpositive plug/phasealignment.Busbar plug-in box areprovided with internal interlocking mechanisms to prevent their doors frombeing opened whilst energized, ensuring operation safety.