Electrical cabinet arc light protective apparatus

The utility model discloses an electrical cabinet arc light protective apparatus which belongs to the electrical protective equipment field. The apparatus comprises an arc light sensor and a sound sensor. The arc light sensor is arranged on the inner wall of an electrical cabinet. The sound sensor is arranged on an enclosed position inside the electrical cabinet. A current sensor which is also arranged on the inner wall of the electrical cabinet is located behind a transformer connected with a bus. The arc light sensor is connected with an arc light acquisition device. The current sensor is connected with a current acquisition device. The sound sensor is connected with a sound acquisition device. The arc light acquisition device, the current acquisition device and the sound acquisition device are respectively connected with an intelligent signal processor. The apparatus which can prevent mistaken detection can prevent fire hazards caused by arc light and further prevent life or property loss due to the fire hazards.