Arc fault protection device AFDD with miniature circuit breaker 1P+N 10kA B-20A 2M.AFDD according to DIN EN 62606 (VDE 0665-10), combined with miniature circuit breaker 1P+N, with electronic residual current measurement (300 mA) to increase fire protection in circuits not protected by RCD, with screw technology, blue test button for the AFD unit with arc fault display. Easy individual removal from the phase busbar assembly. Suitable for subsequent installation of additional equipment. Labeling option directly on the device.