Temperature switch-based electric wire protection apparatus

The invention discloses a temperature switch-based electric wire protection apparatus. The electric wire protection apparatus comprises a shell, wherein a ceramic PTC is placed in the shell; an upwardly-arched deformable dual-metal sheet is placed on the ceramic PTC; a rocking arm connecting terminal is supported by the deformable dual-metal sheet; a limiting cover plate is placed on the upper part of the rocking arm connecting terminal; a bottom plate connecting terminal is placed at the bottom of the ceramic PTC; a contact, positioned in the shell, of the rocking arm connecting terminal is in contact with the bottom plate connecting terminal to form a conductive path; when the current passing through the rocking arm connecting terminal is increased or when the temperature is increased to any one temperature threshold values of 72-90 DEG C, the deformable dual-metal sheet is rotated reversely to lift the rocking arm to enable the contact part to be bounced off to form a turn-off circuit; and the turn-off sta