Temperature-dependent switch with cutting burr

A temperature-dependent switch having a housing, said housing comprising an electrically conductive lower part and a cover part arranged at said lower part, said cover part being provided with a lower side and an upper side, said lower part being provided with a circumferential shoulder arranged in said lower part, and a circumferential wall, an insulating foil being arranged between said lower side of said cover part and said circumferential shoulder in said lower part,

• said circumferential wall of said lower part having an upper section overlapping said cover part and pressing said cover part onto said circumferential shoulder,
• a first external contact surface being arranged on said upper side of said cover part, and a second external contact surface being provided externally on said housing,
• a temperature-dependent switching mechanism being arranged in said housing, which switching mechanism, depending on its temperature, establishes or opens an electrically conductive connection between said first and said second external contact surfaces, and
• a first sharp-edged cutting burr being arranged on and formed integrally with said circumferential shoulder in the lower part, said first sharp-edged cutting burr being circumferentially closed in itself and forming a first mechanical barrier between said insulating foil and said lower part by said first sharp-edged cutting burr cutting into said insulating foil;
• wherein a second sharp-edged cutting burr is arranged on said lower side of said cover part and formed integrally with said cover part, said second sharp-edged cutting burr being circumferentially closed in itself and forming a second mechanical barrier between said insulating foil and said cover part by said second sharp-edged cutting burr cutting into said insulating foil;
• and further
• wherein each of said first and second sharp-edged cutting burrs cuts into said insulating foil to a maximum of half of a thickness of said insulating foil.