Within a few seconds, this practical device can be mounted on any BS4343 plug or appliance inlet rated in excess of 50V and secured in place by a padlock. The plug-guard is ideal for maintenance personnel or anyone who wishes to stop accidental power connection whilst working on machinery in remote locations or during long term servicing. It can also be used to prevent usage of electrical equipment by unauthorised personnel.

The plug-guard has 2-channels into which the nose of the plug or appliance inlet can be trapped, secured under its hinged cover, then locked into place with a padlock.