Plug-in connection part for inductively transmitting energy and/or signals in a potentially explosive environment, connecting device and measuring system

A plug-in connection part (4, 4a) for inductively transmitting energy and/or signals in a potentially explosive environment, comprising:

• an electrical circuit (28) with a circuit connection (29) for supplying the plug-in connection part (4) with electrical energy;
• a primary coil (23) in the electrical circuit (28) for inductive coupling with a secondary coil (11);
• and
• an ignition suppression means (39, 39a) in the electrical circuit (28) for preventing ignition in an event of a fault by limiting a back action of the electrical energy to the circuit connection (29),
• wherein the ignition suppression means (39, 39a) has at least one diode (41.1 to 45.1, 41.2 to 45.2, 47.1, 47.2) for limiting a maximum connection voltage at the circuit connection (29), and
• wherein the ignition suppression means (39, 39a) is directly connected to the circuit connection (29).