Electrical heating device, particularly for an automobile vehicle

A heating device, comprising a housing (15) through which air to be heated can pass delimiting a heating space controlled by an electrical power supply control circuit connected to a power supply source,

• characterised in that the heating space comprises a plurality of electrical heating modules (14) mounted to the housing (15), each heating module being independently separable from the housing (15) and the heating space and including a first and a second approximately parallel metallic ribbon (10, 10′) along a transverse direction (D) and by resistive elements with a positive temperature coefficient (12) fixed between the two metallic ribbons,
• the housing (15) includes power supply compartments (20) with a shape suitable for housing power supply modules (200) that can be connected to the electrical power supply control circuit and to at least one heating module (14), each power supply module comprising an electronic switching element (203), and
• for each heating module (14), the first metallic ribbon (10) is longer than the second metallic ribbon (10′) which creates an indentation generally rectangular in shape (R1) in the heating module.