An electrical arrangement for protection in a direct current electric system includes an input connection, positive and negative input terminals, an output connection with positive and negative output terminals, and a stepping converting component with a switching topology with first and second positive connectors and a ground connector. A first switch is between the first and second positive connectors, and a second switch is between the second positive connector and the ground connector. The negative input terminal and the negative output terminal connect via the ground connector. The one switching topology is connected to the positive input terminal, the positive output terminal, and to the interconnected negative input and output terminals. The stepping converting component provides an operation switching mode for normal operation of the direct current electric system and to provide an overcurrent switching mode for overcurrent operation of the direct current electric system.