Air-conditioning control cabinet for carriage

The utility model discloses an air-conditioning control cabinet for carriages, which relates to an air-conditioning set controlling and protecting device for railway carriages. The utility model adopts a programmable controller (PLC) and controls a switch of an actuating mechanism of the programmable controller (PLC) through an inner soft relay, a compressor and heater controlling switch adopts an alternate-current solid state relay to replace an alternate-current contactor, and a main circuit controlling switch is also provided with a linked electric control switch which is controlled by the PLC to drive an air switch. A protective circuit adopts a current sensor to detect over-current and phase-absent failures and outputs seven paths of alarm signal through the PLC. The utility model solves the problems that a control switch of the original control cabinet easily has adhesion, shake, burnout, misoperation, etc.