High-voltage box of tramcar

The utility model discloses a high-voltage box of a tramcar. The high-voltage box comprises a box cover, a box body and electrical equipment, the box cover and the box body are fixed through a pressing type lock and provided with a sealing structure. A one-way valve is installed at the bottom of the box body and used for draining accumulated water and maintaining air pressure balance inside and outside the box body. Wherein the electrical equipment is installed in the box body, the terminals and the disconnecting switch are arranged on a cross beam with the bottom raised, the follow current resistor, the contactor and the terminal strip are arranged close to or located on the inner side face of the box body, and the connector is arranged outside the box body and used for leading out a control line of the high-voltage box. And the box body is also provided with a waterproof joint which leads the cable of the electrical equipment to a corresponding functional position. According to the utility model, the high-v