Patent ID: 8154234

Claim:
A protective apparatus for safe isolation of a drive section of a power supply of a track-bound vehicle, wherein at least one drive section switch is disposed to selectively connect the drive section to the power supply and the drive section includes stator sections disposed one behind another in a chain, and wherein stator section switches are disposed to respectively connect each of the stator sections to a drive section supply line, the protective apparatus comprising: a control unit connected to the at least one drive section switch and to the stator section switches, said control unit being configured to open all stator section switches and the at least one drive section switch in the event of a fault; at least one common indication device connected to the at least one drive section switch and/or to the stator section switches and configured to at least one of: 1) indicate the switch position of the at least one drive section switch and/or the stator section switches that are involved in the safe drive disconnection; or 2) signal to the control device that the at least one drive section switch and/or the stator section switches are in their isolating position.