Automatic cut-outs are fitted ex-works, instead of the standard blade-type fuses. After an overload, or after the fault has been remedied, the cut-outs are reactivated simply by throwing the switch. This simplifies operation, since you no longer need to exchange fuses or keep a wide range of blade-type fuses on hand. The fuse affected can be seen from the switch position, making troubleshooting much faster, too.