The present invention relates to a middle-set-type withdrawable switch cabinet, which comprises a cabinet body. The cabinet body is divided into a front half cabinet and a rear half cabinet. A bus bar and a main loop are arranged in the rear half cabinet. The bus bar is electrically connected with an external high-voltage power supply. The main loop is electrically connected with the bus bar. A low-voltage chamber, a handcart chamber and a detection chamber are arranged in the front half cabinet. A low-voltage circuit is arranged in the low-voltage chamber. A handcart is arranged in the handcart chamber. The handcart can be moved back and forth in the handcart chamber. The handcart is provided with a circuit breaker. When the handcart is moved backwards to the end of a stroke in the handcart chamber, the circuit breaker is electrically connected with the main loop. A detection circuit is arranged in the detection chamber. The detection circuit is electrically connected with the main loop and the low-voltage circuit respectively. According to the technical scheme of the middle-set-type withdrawable switch cabinet, a high-voltage circuit and a low-voltage circuit are separated. The low-voltage circuit is arranged in the low-voltage chamber and the high-voltage circuit is arranged in a high-voltage chamber. The circuit breaker is arranged on the handcart. In this way, the wiring of the high-voltage circuit and the wiring of the low-voltage circuit are prevented from being mixed up. The debugging and electrical safety is improved. Meanwhile, the electromagnetic interference of the high-voltage circuit on the low-voltage circuit during the energization process is avoided. The handcart is designed to be the middle-set type, thus being small in size and more portable.