Specifications

26
Vertical Unit Load Ground Bus
The vertical unit load ground bus is mechanically connected to the horizontal ground bus. The vertical unit load ground
bus in combination with the unit load connector provides a termination point for the load ground cable at the unit. This
fixed connection does not need to be removed when withdrawing the unit from the MCC.
The 0.1875 in. x 0.750 in. (4.74 mm x 19.05 mm) vertical unit load ground bus can be unplated or tin-plated copper.
Vertical Bus Plug-in Stab Opening Protection
Several options are available for covering unused plug-in stab openings:
• Protective caps
• Manual shutters
• Automatic shutters
Automatic shutters open as plug-in units are inserted and close when the unit is removed. Automatic shutters help ensure
the vertical bus is immediately isolated when a plug-in unit is removed.
Other Structure Related Options
Other options such as pull boxes, master nameplates and space heaters are available.
For more information on structure options, refer to CENTERLINE 2100 Motor Control Centers Catalog, publication
2100-CA001
.