Legrand Fire Protection Switch DX3 STOP ARC. According to EN 62606, VDE 0665-10, EN 61009-1, VDE 0664-20. AFDD with FILS switch, single-pole with a switching neutral conductor, type for alternating and pulsating earth fault currents, instantaneous, rated fault current Idn 30 mA, short-circuit resistant up to 250 A. Circuit breaker part: B-characteristic, rated current In 16 A, rated breaking capacity Icn 10 kA according to EN 61009-1, rated voltage Un 230 VAC, rated frequency 50 Hz, energy limitation class 3, mounted on DIN rail EN 60715 with snap-on fastenings, clear information on the front of each device, clear switching position indication in red-green on the switch lever with labeling window, neutral conductor connection on the right, combinable with Legrand comb busbars. Installation of auxiliary devices is possible. Trip indication: yellow = earth fault or test button trip, colorless = short-circuit or manual trip. The DX3 STOP ARC fire protection switch is a device combination of an arc fault detection device (AFDD) with a residual current device (RCD) and a circuit breaker. The single-pole protected and double-pole switched AFDD with FILS switch provides safe all-pole disconnection in the event of the following fault conditions: earth fault, overload, short circuit, parallel and series arc faults. With LED status indication for recognizing the operating status, and a visual indication for detecting arc fault trips. The self-monitoring of the AFDD unit is carried out 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.