Safe and reliable low-voltage cabinet

A safe and reliable low-voltage cabinet comprises a cabinet body and a cabinet top box arranged on the upper part of the cabinet body. The cabinet body and the cabinet top box are respectively provided with a cabinet door and a cabinet top box door. The cabinet top box is provided with a heat dissipation device, a fire extinguishing device, a signal emitter and a control panel. The heat dissipation device is an exhaust fan. A carbon dioxide automatic fire extinguisher serves as the fire extinguishing device. The fire extinguishing device is provided with a pipeline, and the other end of the pipeline is provided with a nozzle. The heat dissipation device, the fire extinguishing device and the signal emitter are respectively connected with the control panel. A temperature sensor is arranged in the cabinet body. The temperature sensor is connected with the control panel. The cabinet door is provided with a man-machine interaction panel which comprises a screen and buttons and is connected with the control panel. The control panel is connected with a power supply. The safe and reliable low-voltage cabinet is good in heat dissipation effect, is provided with the automatic fire extinguishing device and a remote monitoring function, and is safe and reliable.