The circuit breaker trolley includes a VD4 or VG1 circuit breaker trolley (or a trolley of the same shape). The trolley chassis can be used to mechanically connect the circuit breaker to the cabinet. The trolley chassis is locked to the switch cabinet, and the trolley can be moved manually using a screw rod.
The circuit breaker frame is assembled from alloy steel plates and is fitted with circuit breakers and other equipment. The contact arm with spring-loaded contact system is fitted to the pole of the circuit breaker and makes an electrical connection when the handcart is inserted into the operating position. The signal, protective and control lines between the handcart and the switch cabinet are connected using a control cable plug.