Detecting decoupling of a first connector part from a second connector part of an electrical plug connector

An apparatus for detecting decoupling of a first connector part, connected to a first device, of an electrical plug connector from a second connector part, connected to a second device, of the electrical plug connector,

• the first connector part comprising at least two first contacts for coupling a communication line between the first device and the second device,
• at least two second contacts which lag the at least two first contacts during an unplugging operation and are intended to couple an electrical line between the first device and the second device, and
• a protective conductor contact which lags the at least two second contacts during an unplugging operation;
• the second connector part comprising at least two first mating contacts assigned to the at least two first contacts of the first connector part,
• at least two second mating contacts which are assigned to the at least two second contacts of the first connector part and lag the at least two first mating contacts, and
• a protective conductor mating contact which is assigned to the protective conductor contact of the first connector part and lags the at least two second contacts;
• with the result that, during an unplugging operation, the first contacts are inevitably first disconnected from the first mating contacts, the second contacts are then disconnected from the second mating contacts, and finally the protective conductor contact is disconnected from the protective conductor mating contact,
• comprising:
• a monitoring device for monitoring the communication line, and
• a switching-off device for terminating provision of a first electrical power for the second device by means of the first device via the electrical line on the basis of the monitoring of the communication line.

An electrical plug connector for electrically connecting a first device to a second device, comprising a first connector part and a second connector part,

• the first connector part comprising at least two first contacts for coupling a communication line between the first device and the second device,
• at least two second contacts which lag the at least two first contacts during an unplugging operation and are intended to couple an electrical line between the first device and the second device, and
• a protective conductor contact which lags the at least two second contacts during an unplugging operation;
• the second connector part comprising at least two first mating contacts assigned to the at least two first contacts of the first connector part,
• at least two second mating contacts which are assigned to the at least two second contacts of the first connector part and lag the at least two first mating contacts, and
• a protective conductor mating contact which is assigned to the protective conductor contact of the first connector part and lags the at least two second contacts;
• with the result that, during an unplugging operation, the first contacts are inevitably first disconnected from the first mating contacts, the second contacts are then disconnected from the second mating contacts, and finally the protective conductor contact is disconnected from the protective conductor mating contact.