It is a control plate for source changeover system using ComPact NSX, ComPact NS and MasterPact devices. This ACP provides in a single unit the protection of the controller, the control and the connection to the devices. The control voltages are 110 VAC 50/60 Hz, 220 to 240 VAC 50/60 Hz, 380 to 415 VAC 50/60 Hz.