The invention relates to a thermal varistor protection device (1), comprising a casing (10), a varistor (2) embedded in the casing (10), wherein the varistor (2) comprises a first metallization electrode (21), which is only partly covered by an insulating material (11) of the casing (10) to allow an electrically conductive connection. Furthermore the thermal varistor protection device (1) comprises a first terminal wire (31), which is electrically conductively connected to the first metallization electrode (21) of the varistor (2), a contact element (33), which is electrically conductively connected to the first metallization electrode (21) of the varistor (2) in a region (12) where the varistor is not covered by the insulating material (11) of the casing (10), and wherein the contact element (33) is pre-stressed to ensure a fast separation of the contact element (33) and the first metallization electrode (21) if the electrically conductive connection between the contact element (33) and the first metallization electrode (21) gets loose.
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