Legrand fire protection switch DX3 STOP ARC. According to EN 62606, VDE 0665-10, EN 61009-1, VDE 0664-20. AFDD with FI/LS switch, 1-pole with switching neutral conductor, type A for alternating and pulsating direct residual currents, undelayed, rated residual current Idn 30 mA, surge current resistant up to 250 A. LS circuit breaker part: C characteristic, rated current In 16 A, rated switching capacity Icn 10 kA in accordance with EN 61009-1, rated voltage Un 230 VAC, rated frequency 50 Hz, energy limitation class 3, fastening on top hat rail EN 60715 using snap-in fastenings, clear information on the front of each device, clear switch position indicator red/green on the switch lever, with label window, neutral conductor connection on the right, can be mounted using Legrand fork comb rails. Auxiliary devices can be attached. Tripping indicator: yellow = residual current or test button tripping, colorless = short circuit or manual tripping. The DX3 STOP ARC fire protection switch is a device combination of an AFDD arc fault protection device with a residual current circuit breaker and a miniature circuit breaker. The single-pole protected and double-pole switched AFDD with FI/LS switch offers safe all-pole shutdown in the event of the following faults: residual current to earth, overload, short circuit, parallel and serial arc faults. With LED status display for identifying the operating status, signal display for visual detection when an arc fault is triggered. The AFDD unit monitors itself using an internal daily self-test. Causes of arc faults include: damaged conductor insulation caused by nails, screws or holes, crushed cables or lines, loose or faulty terminals in sockets or screw connections.