Thermally triggerable indicating or switching device

A thermally triggerable indication or switching device, having a movable, mechanically preloaded slide (3) which directly or indirectly triggers or actuates the indication or switching device (5;

• 6;
• 7), and having a preformed part (12) which changes its state of aggregation under the effect of heat, the preformed part (12), in the functional state, being adapted to be arranged so as to block the movable slide (3),
• characterized in that
• in the initial state, the preformed part (12) is loosely located in a receiving space (11), the slide (3) being moved in a position for transferring the preformed part (12) to the functional state such that a gap space (15) opens between the slide (3) and a slide stop (2), wherein, supported by an elastic or flexible arm (10) connected to the slide (3), the preformed part enters the gap space (15) and the slide (3) is preloaded, and the elastic or flexible arm (10) thus secures the preformed part (12) in the gap space (15).