Ptc heating device

An air-conditioning system for a motor vehicle, comprising:

• a PTC heating device, including:
• first PTC thermistors and second PTC thermistors each having a first electrical contact surface and a second electrical contacting surface that lie opposite one another, the first PTC thermistors and the second PTC thermistors arranged sandwiched between a first electrical insulation and a second electrical insulation;
• a first electrical line path arranged between the first PTC thermistors and the first electrical insulation, wherein the first electrical line path is electrically connected to the first contacting surface of the first PTC thermistors;
• and
• a second electrical line path arranged between the second PTC thermistors and the first electrical insulation, wherein the second electrical line path is electrically isolated from the first electrical line path and electrically connected to the first contacting surface of the second PTC thermistors.

A motor vehicle, comprising:

• an air-conditioning system, the air-conditioning system having a PTC heating device that includes:
• first PTC thermistors and second PTC thermistors each having a first electrical contact surface and a second electrical contacting surface that lie opposite one another, the first PTC thermistors and the second PTC thermistors arranged sandwiched between a first electrical insulation and a second electrical insulation;
• a first electrical line path arranged between the first PTC thermistors and the first electrical insulation, wherein the first electrical line path is electrically connected to the first contacting surface of the first PTC thermistors;
• and
• a second electrical line path arranged between the second PTC thermistors and the first electrical insulation, wherein the second electrical line path is electrically isolated from the first electrical line path and electrically connected to the first contacting surface of the second PTC thermistors.