Legrand Arc Fault Detection Device DX3 STOP ARC. According to EN 62606, VDE 0665-10, EN 60898-1, VDE 0641-11. AFDD with circuit breaker, single-pole with a switched neutral conductor. Circuit breaker part: B-characteristic, rated current In 16 A, rated short-circuit capacity Icn kA according to EN 60898-1, rated voltage Un 230 VAC, rated frequency 50 Hz, energy limitation class 3. Mounting on top-hat rail EN 60715 using snap-on quick fasteners, clear information on the front of each device, distinct switching position indicator in red-green on the switch lever with labeling window, neutral conductor connection on the right, combinable with Legrand pin busbars. Installation of auxiliary devices is possible. The DX3 STOP ARC arc fault circuit breaker is a combination device consisting of an arc fault detection device (AFDD) and a circuit breaker. The single-pole protected and double-pole switched AFDD with circuit breaker provides safe all-pole disconnection in the event of the following fault conditions: overload, short circuit, parallel and series arc faults. It features an LED status indicator for recognizing operational status, and a fault indication for visual recognition when an arc fault is triggered. The self-monitoring of the AFDD unit is performed through an internal daily self-test. Causes of arc faults can include: damaged conductor insulation due to nails, screws, or drilling, crushed cables or wires, loose or faulty connection points in sockets or screw connections.