The shear can be operated separately or in combination with an ANDROMAT® manipulator system. The gate piece to be broken is fed to the shear and fixed in a 3-point support. The crushing process is optimized so that the outer ends of the gate material move downwards during the process. In order to avoid the introduction of force feedback into the feed mechanism, the base plate of the circuit breaker is mounted on flexible blocks. The ideal working position of the circuit breaker is directly above the conveyor trough.