The utility model discloses a secondary protective device cubicle and a prefabricated type secondary equipment cabin. The secondary protective device cubicle comprises a cabinet, and an independent man-machine display terminal in communication with the cabinet, wherein the cabinet is provided with a communication interface used for communication connection with the independent man-machine display terminal at a channel front end orientating to the prefabricated type equipment cabin; the cabinet and the man-machine display terminal are in communication by shielding an ethernet communication mode. According to the utility model, the man-machine display terminal and the cabinet are arranged independently, employ universal design, can be deployed independently and flexibly change installation dimensions and positions; an ethernet communication mode is shielded, solving the problems of increased distance and weak capability of electromagnetic immunity of traditional cable communication caused by separation between a man-machine display terminal and a device body of a wiring secondary protective device of prior art, and meanwhile realizing flexible deployment of the man-machine display terminal.