RAILCAR BRAKE CONTROL DEVICE

A rail vehicle brake control device includes a brake control unit (20) that is mounted on each truck and generates a pressure control signal (16) for controlling a brake cylinder pressure (18) that acts on a brake cylinder (27) based on a service brake command (10) and an emergency brake command (12), an electromagnetic valve unit that includes a brake control valve that adjusts a pressure of compressed air (17) supplied to the brake cylinder (27) according to the pressure control signal (16), and a relay valve (24) that outputs the brake cylinder pressure (18) corresponding to the compressed air (17) supplied from the electromagnetic valve unit. The electromagnetic valve unit includes a release isolation magnet valve (23) that adjusts a pressure of the compressed air (17) supplied to a primary side of the relay valve (24), and the release isolation magnet valve (23) is operated by receiving power source supply from a brake control device (100) mounted on another truck.