Tri-Phase Visible Disconnect Vacuum Switchgear Our patented Tri-Phase Visible Disconnect for liquid-insulated vacuum switchgear eliminates the need to remove the three 600-amp elbows. This device provides a safe isolation point and eliminates the potential of contamination of the elbow connections from the outside environment. Now you have the advantage of a vacuum contact with 10,000 transient-free load break operations, the safety of an isolation point and no required maintenance. Interlocking handles for vacuum switch and visible disconnect switch Visual open window close-up